Cichlid Genera Uetroculu^, Geo;)li:\^;ii.-«, (fv. iV.\ 



l\('tor;il as \o\\<^ as the licad. Cuudal rounded or pointed. 

 A dark longitudinal stripe from eye to extremity of caudal; 

 an oblicpie dark stripe from eye to interoperculum, another 

 from eye to mouth ; caudal with dark posterior edge ; soft 

 vertical fins more or less distinctly spotted, 



H. Amazon. 



The types described by Steiudachncr measure up to 55 mm. 

 in length. 



In this species, as in B. BoreUii and pro])ably tliroughout 

 the genus, the soft vertical and ventral tins are produced 

 iu the male. 



Genphufjvs nmfciiits, Cope, Proc. Ac. Pliihid. 1872, p. 250, 

 has been placed in the synonymy of //. t(tniiitum by Stein- 

 dachner and by I'ellegrin, However, it has the longer snout 

 and shorter dorsal spines of //. A(jassizu, w Inch it closely 

 resembles in most other respects, apparently differing in the 

 coloration, the lateral stripe ending iu a spot at the base of 

 the caudal. 



3. Hderogramma BoreUii, sp. n. 



Megops ta>niatus (part.), Bouleug. Boll. Miis. Torin. x. 1895, no 10*] 

 p. 33. 



Depth of body 2?-2? in the Icngtli, length of head about 3. 

 Snout shorter tlian eye, the diameter of whicli is a])out 

 3 in the length of head, interorbital width 22-31. Depth of 

 pneorbital nearly \ the diameter of eye or less. Maxillary 

 extending to below anterior margin of eye ; jaws equal 

 anteriorly; fold of the lower lip continuous; cheek with 2 

 or 3 series of scales ; no scales on the prseoperculum ; no 

 distinct gill-rakers on the lower part of anterior arch. 

 Scales 22-24 '^ ; upper lateral line fully developed on 3-8 

 scales only ; lower lateral line rudimentary or completely 

 wanting. Dorsal XVI 5-6, the spines subequal from the 

 seventh, the last i-'i the length of head. Anal 111 Q-7. 

 Pectoral as long as the head. Caudal rounded or pointed. 

 Caudal peduncle ;-| as long as dccj). Brownish, with darker 

 cross-bars, bearing a series of blackish blotches along the 

 middle of the side ; a curved blackish stripe from temporal 

 region through posterior part of eye to interoperculum ; an 

 oblique dark stripe from eye to mouth ; sides of head with 

 some light IjJue sj)0ts and lines; dorsal ami anal with a 

 narrow blackish edge ; soft dorsal and anal w ith a few 

 alternate light and dark spots posteriorly. 



In this species the males are characterized by longer and 



