FISHES OF HAWAIIAN ISLANDS. 619

Grammatonotus laysanus, new species. Fig. 240.

Type, 38 mm. in total length without caudal, from station 3947, near Laysan Island, depth 97 to 199 fathoms; type, No. 51546, U. S. Nat. Mt's.

Head 35 hundredths of total length without caudal; length of snout 5; length of maxillary 15; diameter of orbit 15; interorbital width 10; greatest depth of body 32; least depth of caudal peduncle 17; length of caudal peduncle 21; length anterior to dorsal fin 38; base of dorsal 47; longest dorsal spine 15; longest dorsal ray 23; length of third anal spine 13; longest anal ray 23; longest pectoral ray 25; ventrals 27. D. xi, 8; A. tit , 9; P. 19; V. t, 5. Tubes in lateral line 18; transverse rows of scales between upper end of gill-opening and base of caudal 25 . or 26; scales in an oblique row between point of dorsal and vent, 10 or 11.

Caudal peduncle short and deep, more than half greatest depth of body; snout very short, evenly rounded, transversely convex, as is also the interorbital space and occiput; anterior nostril with a short broad tube, in front of eye; posterior nostril a small round pore widely separated from the anterior, located on upper orbital rim but little in advance of pupil; eye very large, three-sevenths length of head; mouth oblique, short, maxillary narrow, not reaching vertical from middle of eye; snborbitals very narrow; not concealing maxillary; in sides of pretnaxillaries a narrow band of fine villiformn teeth and an outer series of small canines, the anterior 1 or 2 teeth of outer series a little enlarged; a deep notch

Fig. 240.—Grammatonotus laysanus Gilbert, new species. Type.

between premaxillary teeth anteriorly; mandible with a single series of teeth similar to outer prernaxillary teeth, 1 or 2 of anterior teeth slightly enlarged; a few minute teeth on head and shaft of vomer, and on front of palatines; preopercle rounded, with entire margin; opercle with a horizontal rib ending in a single pungent spine; clavicles forming a sharp keel below on median line, embracing posterior part of isthmus and region immediately posterior; gill-membranes narrowly united anteriorly, forming a free fold across isthmus; branchiostegal rays 6; pseudobranchire large; gill-lamime narrow, the anterior set of filaments on first arch and the posterior set on fourth arch shortened; a well-developed slit behind fourth arch; twenty long slender gill-rakers on horizontal portion of outer arch, the is ingest twosevenths diameter of orbit; a series of large pores on mandible, and one extending from sides of snout around posterior half of orbital rim, and on suborbitals.

Dorsal spines slender and flexible , increasing in length to behind middle of fin; last 5 spines about equal; anterior rays of soft dorsal injured in type; fourth ray produced, overlapping rudimentary caudal rays; succeeding dorsal rays again rapidly shortened; anal spines regularly graduated, third spine about five-sixths the longest dorsal spine; anal fin, like soft dorsal, with middle rays produced into a a sharp lobe; sixth and seventh rays overlapping base of caudal, the succeeding ray rapidly shortened; caudal injured in the type, its shape unknown; outer ventral ray produced well beyond spine, overlapping the vent.