988 MR. C. TATE REGAN ON 



12. Gambusia MELANOPLEURA. 



Poecilia onelcmopletcra Gosse, Soj. in Jamaica, p. 84, pi. i. fig. 3 

 (1851). 



Hajjilochilus melano'pleiirus Giinth. Oat. Fish. vi. p. 317 (1866). 



Gamhusia melanojjleur-a Garman, Mem. Mus. Comp. Zool. xix. 

 1895, p. 88. 



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

 of eye 3 to 3^ in length of head, interorbital width 1|^. 30 or 31 

 scales in a longitudinal series. Dorsal 11-12 ; origin above 

 posterior part of anal, equidistant from base of pectoral and base 

 of caudal ; longest rays i length of head. Anal 10-11 ; branched 

 rays slightly decreasing from first or second. Pectoral -j length 

 of head ; pelvics reaching vent. Least depth of caudal peduncle 

 -5 or 1^ length of head. Traces of spots on dorsal and anal fins 

 and in some of a few spots on the back. 



Jamaica. 



Several females, the largest 47 mm. in total length, types of the 

 species. 



13. Gambusia wrayt, sp. n. (PI. XCIX. figs. 3, 4, and Text- 

 fig. 168 B.) 



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

 3| to 34. Diameter of eye 3 to 3| in length of head, inter- 

 orbital Avidth 2. 31 to 33 scales in a longitudinal series. 

 Dorsal 8 ; origin above posterior part of anal, equidistant from 

 base of pectoral and base of caudal ; longest rays | length of 

 head. Anal 10-11 ; second branched ray longest. Pectoral 

 |- length of head ; pelvics reaching vent. Caudal rounded or 

 subtruncate. Least depth of caudal peduncle ^ ^o j length of 

 head. Coloration probably as in G. gracilior. 



(^ . Dorsal origin equidistant from middle or posterior part of 

 operculum and base of caudal ; longest ray f length of head. 

 Least depth of caudal pedvincle f or f length of head. 



Jamaica. 



Eight females measuring up to 55 mm. in total length, and 

 four adult males of 35 to 40 mm., collected by C. A. Wray. 



14. Gambusia oligostigta, sp. n. (PI. XCIX. figs. 1, 2, and 

 Text-fig. 169 B.) 



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

 3 to 3|. Diameter of eye 3 to 3^ in length of head, inter- 

 orbital width 2. 29 to 31 scales in a longitudinal series. Dorsal 

 8-9 ; origin above last 2 or 3 rays of anal, equidistant from base 

 of caudal and base of pectoral ; fin rounded, longest rays i length 

 of head. Anal 10-11 ; first branched ray longest, the rest 

 regularly decreasing. Pectoral |^ length of head ; pelvics reaching 

 vent. Caudal rounded or subtruncate. Least depth of caudal 

 peduncle f or | the length of head. Brownish above, yellowish 

 below ; edges of scales darker ; usually a dark lateral stripe and 

 a few scattered spots ; dorsal and caudal Avith small spots. 



