16. DACTYLOSCOPUS. ' 279 



8. Tripterygium trigloides. 



Bleeker, Biliton, iv. p. 234. 



B. 6. D. 3 I 13 I 10. A. 10. V. 2. L. lat. 50-55. 



The upper jaw projects beyond the lower. Greenish, marbled with 

 brown and dotted with whitish. {Bl.) 

 Sea of Western Biliton. 



16. DACTYLOSCOPUS. 



Dactyloscopus, Gill, Proc. Acad. Nat. Sc. Philad. 1859, p. 132. 



Body elongate, covered with large scales ; lateral line straight, 

 along the middle ; head broad, depressed, with the eyes directed 

 upwards and -ndth the cleft of the mouth subvertical ; operculum 

 fringed. Small teeth in the jaws, palate smooth. One dorsal, formed 

 by spines only ; caudal separated ; ventrals jugular, with three rays. 

 Branchiostegals six ; pseudobranchiae none ; gill-openings wide. 



Caribbean Sea. 



This genus has been referred by GiU to the Uranoseophia, from 

 which, however, it differs in several cardinal characters. The struc- 

 ture of the dorsal and ventral fins is that of a Blennioid. The absence 

 of pseudobranchice is very peculiar ; but in this respect it differs equally 

 from the Uranoseopina and Blenniiclai. 



1. Dactyloscopus tridigitatus. 

 Gill, I. c. 



D. 37. A. 30. V. 3. L. lat. 44. L. transv. 9. Vert. 13/32. 



A small tentacle at the nostril. The anterior dorsal spines small, 

 flexible, nearly free ; the posterior stiff. Reddish-white, marbled 

 with brownish. 



Caribbean Sea (Barbadoes). 



a-d. Fine specimens. Caribbean Sea. 



17. LICTYOSOMA. 



Dictyosoma, Schleg. Faun. Japan. Poiss. p. 139. 



Body elongate, covered with very small scales, and with a net of 

 lateral lines ; snout of moderate extent ; small teeth in the jaws, none 

 on the palate. Dorsal fin long, with a few posterior soft rays ; anal 

 with two spines ; caudal distinct ; ventrals none. Branchiostegals six. 



Japanese Sea. 



1. Dictyosoma temminckii. 



Dictyosoma, Schlec/. I. c. pi. 73. fig. 3. 



tenuninckii, Bleek. verhand. Batav. Genootsch. xxv., Japan, p. 42. 



Brownish. 



Bay of Simabara. 



B.6. D.f. A.^. 



