10. AMBLYOPUS. 133 



Second Group. AMBLYOPINA. 



The two dorsal fiiia united into one. Vertebrae 11/17. 



16. AMBLYOPUS*. 



Gobioides, Lac^p. ii, p. 280 ; Cuv. ^- Val xii. p. 139. 

 Amblyopus, Cuv. 4'- Val. xii. p. 157. 



Body elongate, naked, or with minute rudimentary scales ; head 

 oblong, quadiilateral, with the cleft of the mouth directed upwards, 

 and with the lower jaw prominent. Gill-openings of moderate 

 width. Eyes very small, more or less hidden. Teeth in a band, 

 the anterior ones being.very strong. One long dorsal fin, the five 

 anterior rays being simple, and separated from the soft portion by 

 an interspace ; a sixth simple ray between the anterior ones and 

 the soft portion ; dorsal and anal more or less continuous with the 

 caudal. Ventral fins united. I3ranchiostegals four. Air-bladder 

 absent, or very small ; gills four ; pseudobranchia^ none. 



A tropical genus, confined to the coasts, estuaries, and fresh waters 

 of the East Indies, extending northwards to China and Jajxm ; one 

 species from the west coast of South America. 



1. Amblyopus cseculns. 



PGobius anguillaris, L. St/st. i. p. 450; £1. Schn. p. 71. 



PCepola coecula, Bl. Schn. p. 241. tab. 54. 



Amblyopus coeculus, Ciu\ ^ Val. xii. p. 165. 



hermanniauus, Cantor, Catul. p. 190 (not Cuv. ^- Val.). 



The length of the head is one-eighth of the total, or four-sevenths 

 of the distance between the root of the ventral and the vent. Pec- 

 toral short ; dorsal and anal fins scarcely united with the caudal, 

 and enveloped in a thick skin. The lower jaw with small barbels. 

 Body naked. 



Estuaries and fresh waters of Bengal and China. 



a. Adult : skin. Sea of Pinang. From Dr. Cantor's Collection. — 



Type of Dr. Cantor's description. 



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



c. d-f. Adult and half-grown. China. 



g. Adult. Canton. From the Collection of the Zoological Society. 

 h, i. Adult and half-grown. From the Haslar Collection. 



* 1. Amblyopus roseus, Cuv. ^ Val. xii. p. 1G4. — Bombay. 



2. eruptionis, Bleek. VerTiand. Batav. Gmoofsch. xxii., Blenn. en Gob. 



p. 38. — East Java ; ^Vjnboyna. 



3. laccpedii, Schlcg. Faun. Jwpon. Poiss. p. 14G. pi. 73. fig. 2. — Japan. 



4. rugosus, Richards. Ichfh. China, \). 207. — Cliina. Typical speci- 

 mens in tlie Cambridge Museum. 



