388 MR, C. TATE REGAN ON [Apr. 10, 



A single specimen, 210 mm. in total length. 



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

 Frederick Estate ; they wei'e covered with thick slime, which peeled 

 off in sheets soon after they were put in spirit." 



16. Oalltchthys kneri Gill. 

 " Flat-headed Cascadura." 



Depth of body 4-4 g 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 ?-. Pari eto- occipital broader than long. Inner 

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

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

 irregular series of small scutes in front of the adipose fin. Dorsal 

 8 ; first ray a short flat spine, second simple, the rest branched, the- 

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

 extending to base of caudal. Pectoral spine from more than | ta 

 nearly f the length of head . Caudal round ed . Bi-ownish or greyish 

 bi'own, with obscure darker spots ; fins yellowish, with dark spots. 



Here described from two specimens, 115 mm. in total length, 

 from Trinidad. This fish has not yet been recorded from other 

 localities. 



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

 This fish can shuffle along the ground rapidly and grunts faintly 

 when handled." 



17. Callichthts littoralis Hancock. 

 " Common Cascadura." 



" Yery 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 appreciated 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 ovit of water ; when 

 handled they make a. grunting noise. This species constructs a 

 floating nest on the top of the water, and according to Mr. 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 water is disturbed near their nests." 



Sab. South America, from Paraguay to Eciiador, 



18. Callichthys thoracatus 0. & Y. 

 Sab. Brazil ; Guiana ; Venezuela. 



19. CoRYDORAS iENEUS Gill. 



" Small Cascadura."' 



Depth of body 2i-3 in the length, length of head 3|. Diameter 

 of eye 4|- in the length of head, interorbital width 2. Profile 

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



