BLENNIID^E. 307 



Synopsis of Indian Genera. 



A. Caudal fin distinct. 



a. Gill-opening a small foramen above root of 



pectoral 1. PETROSCIRTES. 



b. Gill-opening wide 



a'. Dorsal single, with more rays than spines. 



No sucker below head .\ 2. SALARIAS. 



A sucker below head 3. ANDAMTA. 



b'. Three dorsals 4. TRIPTERYGIUM. 



c'. Dorsal single, more spines than rays 5. ACANTHOCLINUS. 



d'. Two dorsals, anterior with three spines . . 6. CRISTICEPS. 



B. Caudal continuous with vertical fins. Body 



band-like 7. XIPHASIA. 



1. Genus PETKOSCIRTES, Riippell. 



Syn. OsmobrcmehuSj Ehrenb. ; Blennechis, Cuv. & Val. ; Aspidontvs, 

 Quoy & Gaim. 



Branchiostegals six. Gill-openings reduced to a small foramen 

 above the root of the pectoral fin. Body somewhat elongate. 

 Snout short or of moderate length ; cleft of mouth narrow ; head 

 sometimes with tentacles. A single row of fixed teeth in the jaws, 

 with a strongly curved canine on each side, lower canines much 

 larger than upper. Dorsal fin single or with a semi-detached por- 

 tion ; ventrals with two to four rays. No scales. Air-bladder 

 present. 



Geographical Distribution. Coasts of the Ked Sea, India, the 

 Malay Archipelago, and the Pacific. 



Synopsis of Indian Species. 



A. Dorsal continuous, nearly the same 



height throughout. 



D. 40, A. 27. Vertical bands on sides 1. P. striatus, p. 307. -n-- 



D. 34, A. 22-23. Spots and narrow 



horizontal lines on sides 2. P. punctatus, p. 308. 



D. 33, A. 23. Blue lines on head, two 



spots on dorsal 3. P. lipunctattis, p. 308. 



D. 28-31, A. 17-21. 



Head 5J, height 6 in total length 4. P. variabilis, p. 309. 



Head 4 J, height 4| in total ; white 



bands along side 6. P. cyprinoides, p. 310. 



Head 4 J, height 5 in total ; a black 



band along side 7. P. breviers, p. 310. 



B. First 3 dorsal rays higher than rest, and 



separated by a notch 5. P. lienardi, p. 3C9. 



1115. (1.) Petroscirtes striatus. 



Tetroscirtes striatus, Day, P. Z. S. 1888, p. 262 ; Fish. India, 

 Suppl p. 796. 



D. 40. P. 13. V. 3. A. 27. C. 10. 



Length of head 4|, of caudal fin Gf, height of body 6 in the 



x2 



