PHYSOSTOMI. 
I’ibces 18 
PHYSOSTOMI. 
SlLURIDiE. 
Doumea, g. n. Body elongate, flattened beneath, tail long; mouth 
almost terminal, transverse, inferior; upper lip verrucose; six barbels, 
two mandibular; nostrils rather apart; head covered with skin; dorsal and 
anal short, adipose short ; pectorals and ventrals horizontal ; no teeth on 
palate ; eyes covered with the skin. D. typica, sp. n., Sauvage, Bull. Soc. 
Philora. (7) iii. p. 96, Ogowe. 
Clarias hutliupogon [hythi-\ sp. n., id. 1. c. {=■ C. gahonicus, Gthr.). 
Liohagrus, g. n. (Bagrina). Adipose fin long and low, dorsal short, with 
one stiff unserrated, and six soft rays, anal short, caudal rounded, ventral 
six-rayed ; eight barbels ; patches of hooked teeth on intermaxillary and 
mandible only, none on vomer or palatines ; eye beneath the skin with- 
out fold ; gill-membrane free quite to the front. L. reini, sp. n. Hilgen- 
dorf, SB. nat. Fr. 1878, p. 155, Japan. 
Rita sacei'dotiim, sp. n., Anderson, Yunnan, p. 864, pi. Ixxix. fig. 3, Ira- 
wady. 
Pimelodus balayi, sp. n., Sauvage, Bull. Soc. Philom. (7) iii. p. 98, 
Ogowe. 
Ato 2 yochilus, g. n. (Ariina). Nostrils placed one against the other, the 
posterior with a valve ; head osseous above : mouth wholly inferior, in the 
form of a longitudinal slit ; teeth silk-like, moveable, and disposed in 
several rows on the mandible ; fine, short, moveable teeth forming a 
broad band in the upper jaw, a transverse series of setiforra teeth on the 
vomer ; lower lip thick, pendant, verrucose ; a barbel at the union of 
upper and lower lips ; branchial opening small ; isthmus very wide ; a 
spine at the dorsal which is short, and one at the pectoral : adipose very 
short. A. savorgnanif sp, n., Sauvage, Bull. Soc. Philom. (7) iii. p. 96, 
Ogowe. 
< Ariopsis milherti ?. On the breeding habits of the Sea Cat-fish ; Lupton, 
P. U. S. Nat. Mus. i. p. 278. 
uPllurichthys Gthr., = mannus, Mitch. ; Steiudachner, Denk. 
Ak. Wien, xli. Abth. 1, p. 159. 
Ageniosus pardalisy .Ltk., described and figured ; id. op. cit. xxxix. 
p. 33, pi. iii. fig. 1. 
A uchenipterus insignis, p. 35, pi. iii. fig. 2, and magdalence, p. 36, pi. iv. 
fig. 1, spp. nn., id. 1. c., Magdalena river. 
Doras longispinis^ sp. n., id. 1. c. p. 39, pis. iv. fig. 2, & v. fig. 1, Magda- 
lena river. 
Cory dor as marmorahis, sp. n. ?, id. op. cit. xli. Abth. 1, p. 26, pi. v 
fig. 1, La Plata. 
Mahipterurus electricus. On its habits observed in captivity ; A. Stir- 
ling, J. Anat. Phys. xiii. pp. 350-352. Var. n. oguensis^ Sauvage, Bull. 
Soc. Philom. (7) iii. p. 99, Ogowe. 
Plecostomus tenuicaiiday sp. n., p. 40, pi. vi., Magdalena River, and note 
onP. villarsi, Ltk., p. 42, pi. vii., Steiudachner, Denk. Ak. Wien, xxxix. 
1879. [vob. XVI.] 13 9 
