122 DEEP SEA FISHES. 



" Investigator " from the northern parts of the Indian Ocean, are noted by 

 Alcock at depths of more than a hundred fathoms. In the present '' Alba- 

 tross" collection there is a new species of Callionymus from between Malpelo 

 Island and the Isthmus of Panama at a hundred and twelve to a hundred 

 and twenty-seven fathoms. The slender claims of the group to a place on 

 the lists of deep sea fishes rest entirely on the genera mentioned ; the 

 species mentioned show no special bathybial modifications. 



GOBIID^E. 

 Callionymus atrilabiatus sp. n. 



Br. r. 6 (6-5) ; D. IV, 9 ; A. 8 ; V. 6 ; P. 23 ; C. 12. 



Form of moderate elongation, depressed, tapering from the operculum 

 to the snout and to the caudal ; body cavity less than half of the length 

 to the base of the caudal. Head one third of the length to the base of 

 the tail, two thirds as wide as long, hardly two thirds as deep as wide, 

 broad and slightly convex across the parietal region, narrow and grooved 

 between the eyes, narrow and blunt on the snout, with a low arch from 

 snout to nape. Snout as long as the eye, wider than deep, subangular 

 forward, rounded at the end. Nostril porelike, nearer to the eye than to 

 the end of the snout. Mouth small ; maxillary extending little, if any, 

 behind a vertical from the front edge of the orbit. Teeth small, in short 

 villiform bands which are widest near the symphyses and narrow rapidly 

 backward. Eyes large, very prominent, close together ; orbit as long as 

 the snout, less than one third of the length of the head. Process of the 

 preoperculum stout, turned upward at the end, bearing a strong upward 

 directed spine and a stronger one directed forward. Gill openings small, 

 superior, directly forward of the upper edge of the pectoral base. Four 

 gills; rakers five to six, short, clubshaped. Pseudobranchias medium. 

 Lateral line single ; distinct, with very small, closely placed pores on the 

 flanks and across the aural region at the nape; indistinct, and with scattered 

 jDores on the head. 



Dorsal originating opposite the middle of the space between the base of 

 the pectoral and the gill opening, at one third of the distance from the 

 snout to the base of the caudal, first ray longest. Second dorsal higher 

 forward, pointed behind, hindmost rays longest, reaching the bases of the 

 caudal rays. Anal fringed, origin below the third or the fourth ray of 



