39. POLTCAULUS. 175 



38. PTYONOTUS*. 



Triglopsis, Girard, Cottoids of N. Amer. in Smithson. Contrib. Knoivl. 

 iii. 1852, p. 64 (not Kroyer). 



Head rather broad and depressed, rounded in front ; body sub- 

 cylindi'ical, compressed posteriorly ; bead and body with the skin 

 soft and naked ; lateral line present. Two dorsals : the second very 

 elevated ; pectorals rounded, with the rays simple ; ventrals thoracic. 

 Jaws and vomer with villiform teeth ; none on the palatine bones. 

 Aii'-bladder none ; pyloric appendages in small number. 



Lake Ontario. 



1. Ptyonotus thompsonii. 



Triglopsis thompsonii, Girard, Proc. Bost. Soc, Ned. Hist. iv. 1851, 

 p. 19, and Smiths. Contrib. I. c. p. 65. pi. 2. f. 9, 10, pi. 3. f. 22-25, 

 36-38. 



D. 7 I 18. A. 15. Csec. pylor. 7. 

 Dorsal fins separated from each other. (Gir.) 

 Lake Ontario. 



39. POLYCAULUSt. 



Synanceia, sp., £1. Schn. p. 194 ; Cm: ^ Val. iv. p. 440. 



Head broad, rather depressed, with the eyes directed upwards ; 

 body subcylindiical anteriorly, compressed posteriorly. Praeoper- 

 culum armed. Scales none. One dorsal with jiexihle spines and 

 rays ; anal elongate ; pectoral appendages none. ViUiform teeth in 

 the jaws onhj. Branchiostegals seven. 



East Indian Seas. 



1. Polycaulus elongatus. 



? Synanceia uranoscopa, Bl. Schn. p. 195 ; Cuv. ^ Val. iv. p. 458. 

 Synanceia elongata, Cue. ^ Val. iv. p. 456 ; Bkeker, Verhand. Batav. 



Genootsch. xxii. SclerojJ. p. 10. 

 breviceps, Richards. Voy. Sulph, Fishes, p. 71. 



D. 24-25. A. 15. Vert. 10/17. 



Form of the head and position of the eye as in Uranoscoims. The 

 upper surface of the head uneven ; cheek without groove. No vo- 

 merine teeth. Brownish (in spirits), with whitish dots ; pectoral 

 and anal with a broad blackish margin. 



East Indian Seas. 



a. Adult. Java. 



h, c. Adult. Madras. Presented by T. C. Jerdon, Esq. 



d. Half-grown. Madras. Presented by T. C. Jerdon, Esq. 



e. Half-grown. India. Presented by G. R. Waterhouse, Esq. 

 /. Adult. Sea of Pinang. From Dr. Cantor's Collection, 



y, h. Adult : skins. Sea of Pinang. From Dr. Cantor's Collection. 

 i. Adult. China. Presented by J. R. Reeves, Esq. 



* From TTTvov, a fan, and vdiros, back. 



t From TToXvKavXos, with many stems. (Anal with many rays.) 



