1 871.] FRESHWATER SILUROIDS OF INDIA. ; 13 



AlLIICHTHYS PUNCTATA, Sp. nov. 



P. £. A. 76-82. C. 17. 



Length of head \, of caudal |, height of body A of the total l m „th 

 Eyes s.tuated more than half below the aJle of he mo 1 hfi 

 parUy on the lower side of the head. Diame? f of kS of led" 

 i a diameter from end of snout, 1 diameter apart. g ' 



Body compressed upper profile of head somewhat concave 

 Upper jaw shghtly the longest, the cleft of the mouth only ex 

 tending about halfway to the anterior margin of thieve onnosiS 



zsfis. ifiit of the sam * lensth ' reS ~ 



Teeth villiform in the jaws. 



.?' Ad iP° se dors ? l minute ' Pectoral spine one half longer than 

 the head. Ventrals absent. Caudal forked, lower lobe the!on«£ 

 Air-vessel tubular, placed across the bodies o7he anter or vSt 

 bra, and more or less enclosed in bone 



wtT*' fv! 1V K ry> U ?. P f r SUrface 0f head nearl y Wack, a large black 

 spot before the base of the caudal fin S 



riveTf ' K?l£ and bCl0W ° elhi> als ° in the Lo ™ P^jaub 



^^^^l!Z^s ap ^7lr e common in the 



up to 4 inches in length^ ^ numerous specimens 



EUTROPIICHTHYS VACHA, H. B. pi. 19. f. 64. 



Air-vessel narrow, tubiform, placed transversely across the bod v 

 of the anterior vertebra;, and all but its central portion enclosed S 

 bone either expanded extremity being within a bony capsule 



Geographical distribution. -Large rivers of India and Burmah 

 It appears to prefer estuaries and the lower portion of rivers! 



Genus Sisor, H. B. 

 Air-vessel. Having only small specimens to dissect, a further 

 examination of this species is desirable. Subvertebral bony capsules 



™ITT> "S & T rentl ? COntained a » air-vessel, wh y ils P none 

 could be detected in the abdomen. 



Geographical distribution. —Ganges and Jumna rivers. 

 Genus Gagata, Bleeker. 



PlMELODUS GAGATA, H. B. pi. 39. f. 65. 



Air-vessel in two globular portions, enclosed in bony capsules 

 p aced on either side of the body of the anterior vertebra?, and 

 Having a transverse communicating tube. 



Geographical distribution-Urge rivers of India and Burmah, 

 and generally not far from their mouths. 



Genus Hemipimelodus, Bleeker. 

 In both H. cenia, H. B., and H. viridescens, H. B., the air-vessel 



