of the Genus Gov J doras. 215 



11. Conjdoras trilineatus. 



Cope, Proc. Acad. Philad. 1871, p. 281, pi. vi. fig. 2. 

 ? C'orydoras acutus, Cope, I. c. 



Very closely related to C. elegans, but with a larger eye, 

 its diameter A the length of head in a specimen of 4:9 mm. 

 A yellowish lateral band with brownish margin above and 

 below and blackish median line ; dorsal rays blackish supe- 

 riorly ; caudal barred J anal spotted. 



Ambyiacu R. 



According to Eigenmann this species is the same as C. 

 agassizii, but it has the shorter snout and broader operculum 

 o£ C. elegans. 



12. Gorydoras punctatus. 



Cataphractus punctatus, Bloch, Ausl. Fisch. pi. ccclxxvii. fig. 2 (1794). 



A species resembling C. elegans and C. trilineatus in form 

 and in coloration, the dorsal fin blackish superiorly and sonie 

 spots along the middle of the side; caudal barred, 



Surinam. 



13. Gorydoras raimundi. 

 Steiud. Anz. Akad. Wieu, 1907, p. 84. 



Depth of body 3 to 4 in the length, length of head Z\ to 3^. 

 Diameter of eye 5 to 6 in the length of head, interorbital 

 width 2, length of snout 2. Dorsal I 8. Anal I 6. Pectoral 

 fin usually a little shorter than head. Scutes 23-2.5/22-23. 

 3 longitudinal series of greyish-violet spots on the body ; 

 a blackish band across middle of dorsal fin ; caudal with 

 cross-bars. 



E,io Parnahyba near Victoria, 



14. Gorydoras armatus. 



CalUchthys armatus, Giintb. Proc. Zool. Soc. 1868, p. 230, fig. 

 ? Gorydoras amphibelus, Cope, Proc. Acad. Philad. 1871, p. 282, 



Depth of body 2^ to 2^ in the length, length of head 3|. 

 Snout a little longer than eye, the diameter of which is 3.^ in 

 the length of head ; interorbital width 2. Suborbital narrow, 

 its depth less than ^ diameter of eye ; barbel not reaching 

 gill-opening. Dorsal I 7-8 ; spine as long as depth of body 

 below it ; soft rays decreasing from first, which is a little 

 shorter than spine; base equal to or a little more than 

 distance from adipose fin, which is preceded by 4 or 5 

 median scutes. Anal I 6-7. Pectoral spine as long as or 



15* 



