AMERICAN GOBIID^ AND CALLIONYMID^. 77 



Head, to tip of opercular spine 3^ in lengtli (5 iu total) ; 

 depth 7 (9). D. IV— 6; A. 4. 



Body Hat below, the ventral surface bordered on each side 

 with a fold of skin which is wider than the pupil; a single 

 lateral line; diameter of eye equal to length of snout, 3 J 

 in head; maxillary not extending to the eye; opercular spine 

 with two barbs above, the anterior one larger and turned 

 forward; gill-opening a minute foramen opening upward. 

 The last dorsal ray equals the length of the head, and the 

 first dorsal spine reaches its tip when the fin is depressed; 

 ventral fins connected by a broad membrane to the middle 

 of tlie outer pectoral region; pectoral fins, as long as the 

 head. 



Cheeks, opercles, connecting membrane of ventral fins 

 and ante-pectoral region with milk-white spots; lower jaw 

 black near the rictus; a series of black dots on branchios- 

 tegal membranes, (me or two similar dots in front of pec- 

 torals, two on the cheek forming a series with the second 

 branchiostegal spot; four black spots on the marginal mem- 

 brane of the belly, other black spots above it; lower half 

 of body with numerous dirty-white spots; pectorals trans- 

 parent, ventrals dusky; membrane of anal sprinkled with 

 minute black points aggregated into black spots in places, 

 and with opaque white spots; caudal transparent, having 

 minute points, its upper half with opaque milk-white bars 

 running obliquely downward and backward from ray to ray; 

 lower half with interrupted longitudinal lines of opaque^ 

 white, alternating with black spots; dorsal transparent, with 

 white and black dots most conspicuous between last rays; 

 body marbled with light and darker. 



This species is nearly related to Callionymus paaciradiatus 

 Gill. The only description of that species is: "D. Ill, 6. 

 A. 4. The preopercular spine is armed with three teeth 

 above and terminates in an acute point." Ann. Lye. Nat. 

 Hist., N. Y., viii, 143, 1865. (Matanzas). The speci- 



