390 PROCEEDINGS OF THE ACADEMY OF [June, 



Priapichthys annectens (Regan). 



Head 3f ; depth 3; D. i, 9; A. in, 7; scales 28 to caudal base and 

 about 10 more on caudal basally; 9 scales between dorsal and anal 

 origins; 20 scales before dorsal; snout 2| in head measured from 

 upper jaw tip; eye 3f ; maxillary 2f. Gill-rakers about 15 short 

 points. On head above several large cavities or channels lengthwise 

 from near front of snout till over middle of eyes. A transverse 

 channel posteriorly also over eye on each side, and still posteriorly 

 2 more large pores. Color when fresh in alcohol olivaceous-dusky 

 above and on sides, all scales strongly contrasted by dark or dusky- 

 black borders, forming a prolonged reticulated pattern. Under 

 surface of head and trunk pale to whitish. Jaws dusky. Iris olive. 

 Dorsal olivaceous, marginally grayish and each membrane at base 

 with blackish blotch. Caudal gray, olive-gamboge basally. Pec- 

 toral pale olive. Ventral yellowish. Anal bright orange-red in 

 front, edge behind, and basal portion yellowish. One example, a 

 female, 63 mm. 



Poeciliopsis isthmensis Regan. 



Color of male fresh in alcohol olivaceous above and on sides, 

 lower surface of head and trunk paler. Each scale with dark edge 

 sharply defined and producing greatly contrasted reticulated pattern- 

 Row of underlaid narrow leaden vertical lines or streaks, about 14 

 in number, along middle of sides. Fins grayish, edges slightly 

 darker. Dorsal mostly tinged olive basally. Edge of intromittent 

 organ dusky. Iris dark. Length 43 mm. for largest, and 22 mm. 

 for smallest, in series of eleven examples. The smaller males show 

 the anal tinged with orange, and dorsal and caudal bases gamboge. 

 Also black dots at edges of scales. 



Adult female with scales very dark edged. Dusky spot on each 

 dorsal membrane before dorsal ray basally. Anal gray and ventral 

 whitish. Dusky blotch above vent. Iris olive. One example 

 50 mm. long. 



Poeciliopsis maculifer sp. nov. Fig. 1. 



Head 4f ; depth 3f ; D. i, 8; A. in, 7; P. i, 11; V. i, 5; scales 29 

 in lateral series to caudal base and 3 more on latter; 9 scales between 

 dorsal and anal origins; 17 scales before dorsal; head width If its 

 length; second branched dorsal ray If; first branched anal ray If; 

 least depth of caudal peduncle If; caudal little longer than head; 

 pectoral If; ventral If; snout 3| in head, measured from upper 

 jaw tip; eye3|; maxillary 3; interorbital If. 



