2186 Bulletin 47, United States National Museum. 



row dusky cross streaks; anal with its posterior half chiefly black, the 

 :in t erior pale ; ventrals black ; pectorals pale. Type, a specimen 4| inches 

 long, in good condition, from the "spewings" of a Snapper or a Grouper 

 (Neomcenis aya or JSpinephelus mono), taken on the Snapper Banks, be- 

 tween Pensacola and Tampa; 1 other specimen known. ("I have named 

 this species for Prof. Spencer F. Baird, to whom I have been indebted 

 for aids of many kinds in connection with my studies of American fishes." 

 Jordan.) 



Callionymus bairdi, JORDAN, Proc. U. S. Nat. Mus. 1887, 501, Snapper Banks off Pensa- 

 cola. (Type, No. 39300. Coll. Silas Stearns.) 



2512. CALLIONYMUS HIMANTOPHORUS, Goode & Bean. 



Head 3i; depth of head equal to length of its postorbital portion or to 

 greatest depth of body. Greatest depth of body at the head and the ante- 

 rior portion of the trunk. D. IV, 8; A. 8; P. 19; V. I, 5. Body slender, 

 moderately elongate, fins all well developed, the tail tapering and with 

 some of its rays produced into a filament. Caudal peduncle very slen- 

 der, the least height of tail scarcely more than i greatest height of body. 

 Profile descending very rapidly at snout. Mouth small and the intermaxil- 

 lary very protractile, but may be almost entirely concealed under the pre- 

 orbitals. Intermaxillary reaching to front of orbit. Maxillary a roundish, 

 slender bone, extending backward to end of intermaxillary. Mandible 

 about as long as eye, extending to vertical through front of pupil. Teeth 

 in villifonn bands on intermaxillary and mandible. Interorbital space 

 very narrow, less than length of eye, which is 1 times as long as snout 

 and nearly of total without caudal. A strong bifurcated spine at angle 

 of the preoperculum extending backward slightly beyond the gill open- 

 ing; length of this spine at its upper articulation length of eye. Gill 

 opening reduced to a small slit, placed at a distance behind eye about 

 equaling length of eye and above median line of body. Skin naked. 

 Lateral line abruptly arched over gill opening and connected across nape 

 with its fellow of the opposite side. Spinous dorsal somewhat elevated 

 in front, the first spine nearly twice as long as last, its length about 

 total length of caudal; sixth and seventh rays longest, their length 

 nearly equaling that of base of fin; caudal consisting of 4 simple and 

 8 divided rays ; of the divided rays the fifth and sixth are the longest, 

 the lower portion of the fifth and the upper portion of the sixth being 

 produced into a filament, making these rays as long as the distance from 

 the tip of the intermaxillary to the fourth anal ray. It is worthy of 

 remark that in another example of the same species and of about the 

 same size as the type, the sixth of the divided rays alone contributes to 

 form the filament; and in a young example, about as large as the type, 

 the first dorsal spine when laid back reaches to the end of soft dorsal. 

 Some of the numerous examples of this species have none of the cau- 

 dal rays much produced, even in large individuals. Anal fin beginning 

 directly under third ray of soft dorsal, its rays increasing in length to the 

 sixth, which is the longest and twice as long as the first, its length 5f 



