Henn: South American Pceciliid Fishes. 129 



actual part of the fin. If used, as suggested above, for the trans- 

 ference of spermatozoa, it was empty at the time of capture. Sections 

 near the center and through the posterior portion respectively, are 

 shown in figures 12 and 13. Other than in the character of the anal 

 fin, or intromittent organ, this fish does not greatly difi'er from a num- 

 ber of related species. 



23. Phallotorynus fasciolatus Hcnn, sp. nov. (Plate XXI, figs, i 



and 2.) 

 3752, C. j\I., type, male, 20 mm.; 3753 a-b, C. M., paratypes, two 



males, 19.5-22 mm., eight females, 20.5-28.5 mm. One mile north 



of Jacarehy, Sao Paulo, Brazil, from the basin of the Rio Parahyba, 



July 14, 1908. Haseman. 



Head 4.4-4.6; depth at origin of anal 4-4.5; depth of caudal peduncle 

 5.5-6; D. 8; A. II (male 9); P. 10; scales 28-30+ i from upper angle 

 of gill-opening to caudal; fourteen scales between large occipital scale 

 and origin of the dorsal; nine scales in a transverse series. Eye 1.5 

 in the interorbital width, 2.5 in the head; interorbital 1.6 in the head. 

 Snout and head broad, depressed; profile slightly arched; mouth 

 vertical, premaxillaries protractile. Second dorsal ray in the female 

 nearly over the last ray of the anal. Origin of the dorsal slightly im 

 advance of the middle of the total length. The anal of the male^ 

 exclusive of the clasper, equals about one-fourth of the total length.. 

 Pectorals large, reaching to above middle of ventrals; the latter minute^ 

 barely reaching the vent. Caudal rounded, hyaline. Viviparous. 

 A female which was examined contained nine large yolk-laden ova.. 

 Intestine about twice the total length ; fins are usually without pigment ,•: 

 the dorsal and anal fins of a few specimens are pigmented. Sides with 

 six or seven narrow, vertical bands, or streaks of dark brownish 

 pigment. 



Genus Cnesterodon Garman. 



Cnesterodon Garman, Mem. Mus. Comp. Z06I., XIX, (i), 1895, p. 43; Regan, 



Proc. Zool. Soc. London, pt. IV, 1913, p. 1000. 

 Gulapinniis Langer, Morph. Jahrb., XLVII, 1913, p. 207. 



Type of genus, by original designation Pcecilia decem-maculatus. 

 Jenyns. 



The dentition consists of an outer series of compressed, slightly- 

 recurved, spatulate incisors, with a single series of small conical teeth 

 just behind them. 



