388 • MR. C. TATE REGAN ON [^W- ^^r 



A single specimen, 210 mm, in total length. 



" Uncommon, only two specimens taken in a large pool near the 

 Frederick Estate ; they were covered with thick slime, which peeled 

 off in sheets soon after tliey wei'e put in spiiit," 



16. Oallichthys kneri Gill. 

 " Flat-headed Cascadura." 



Depth of body 4-4g in the length, length of head about 4|-. 

 Head broader than long. Snout broad, rounded, its length 3| in 

 the length of head. Diameter of eye 9 in the length of head, 

 interorbital width 1 1. Parieto-occipital broader than long. Inner 

 barbel longest, extending beyond the middle of the pectoral fin. 

 Coracoids not exposed on lower surface of body. Scutes |^r^^ ; an 

 iri-egular series of small scutes in front of the adipose fin. Dorsal 

 8 ; first ray a short flat spine, second simple, the rest liranche<l, the 

 middle rays longest, f the length of head. Anal 6, when laid back 

 extending to base of caudal. Pectoral spine from more than ^ to 

 nearly f the length of head. Caudal rounded, BroAvnish or greyish 

 brown, with obscure darker spots ; fins yellowish, with dark spots. 



Here desci-ibed from two specimens, 115 mm. in total length, 

 from Trinidad. This fish has not yet been recorded from othei- 

 localities. 



" Plentiful in the Bejucal Swamp, but found all over the island. 

 This fish can shuflle along the ground rapidly and grunts faintly 

 when handled." 



17. Oallichthys littoralis Hancock. 

 " Common Cascadura." 



" Veiy plentiful in muddy swamps and also found in rivers 

 and in ravines with muddy bottoms. In the dry season they are 

 caught and sold in thousands, being much a2:)preciated as food. 

 "When the water has subsided in the swamps they are easily 

 captured by baling out the muddy pools. They can move along 

 the ground rapidly and can live a long time out of water ; when 

 handled they make a grvmting noise. This species constructs a 

 fl.oating nest on the top of the Avater, and according to Mi-. Pasea 

 they breed in the wet season in drains which dry up in the dry 

 season ; they are very savage at this period and will make an 

 offensive display when the w^ater is disturbed near their nests." 

 Hab. South America, from Paraguay to Ecuador. 



18. Callichthys thoracatus C. & V. 

 Hab. Brazil ; Guiana ; Venezuela. 



19. CORYDORAS ^NEUS Gill. 



" Small Cascadui'a.'' 

 Depth of body 2-L-3 in the length, length of head 34. Diameter 

 of eye 4^ in the length of head, inteiorbital width 2. Profile 

 evenly convex from snout to origin of dorsal. Lower lip free, with 



