168 Report on some Fishes received from the Sitang River. [No. 2, 



series more or less distinct. Tail with one large spot towards the end of 

 each lobe, and two or three more intermediate ; also an irregular row 

 of spots towards its base. Pectoral, ventral, and anal fins, coluurle.-s 

 or nearly so. 



D. 10.— A. 6.— P. 11.— V. 6.—C. 17. 

 A very prettily marked fish. Length 5 in., of which head to gill- 

 cover 1 in. ; and height at dorsal | in. Tenasserim provinces. 



IV. — Acanthosis, Agassiz. The ordinary spined Locb.es with 

 compressed head, of which the European A. T^NIA is typical. 



Of these, some are of more elongate shape, with the dorsal fin 

 placed somewhat backward and distinctly posterior to the ventrals ; 

 tail rounded more or less ; and the head not so much compressed as 

 in the others, with the eyes placed high, but not approximated as in 

 Peostheacanthtjs. Such are Ac. taenia, (L.), and the Indian Ac. 

 gongota and Ac. cuecuea, (B. H.) Also 



Ac. Beedmoeei, nobis, n. s. Of a pale reddish clay-colour, thickly 

 freckled over with blackish except on the abdominal region ; about a 

 dozen larger black spots along the lateral line, more or less distinct ; 

 the dorsal aspect uniformly dark or nearly so : head minutely speckled : 

 bifurcate spine small, with subequal prongs : well developed cirri : 

 dorsal and caudal minutely speckled throughout ; the anal less so ; 

 and pectorals and ventrals dark-centred. 



D. 8.— A. 6.— P. 8.—V. 6.—G. 17. 

 Length 3| in., of which head -f in. : depth of body § in. Tenas- 

 serim provinces. 



Others have a shorter body, with the dorsal in the middle of the 

 entire length and opposite to the ventrals ; the head small and much 

 compressed. To this division appertains Ac. guntea, (B. H.), which 

 is the only species of Loche common about Calcutta. 



Ac. micbopogon, nobis, n. s. Head and body very much com- 

 pressed, the tail furcate, and cirri minute : posterior prong of the 

 bifurcate spine conspicuously longer and stronger. Body pale, blotched 

 and mottled with light ashy-brown, and showing a more or less 

 obscure series of ten transversely oval ashy spots along tha. lateral 

 line, and a black one at base of tail : each tail-lobe marked with four 

 ©blione dark cross-bauds, the last of them terminal : four transverse 



