660 Bulletin 47, United States National Museum. 



of the abdomen silvery, the portion above the silvery part black. 

 Streams of Jamaica ; locally common, (//t^af, black; irhevpov, side.) 

 Pcecilia melapleiira, GOSSE, Naturalist's Sojourn in Jamaica, 84, 1851, Jamaica. 

 Haplockilus melanopleurus, GUNTHER, Cat., vi, 317, 1866. 



301. ADINIA, Girard. 



Adinia, GIRARD, Proc. Ac. Nat. Sci. Phila., 1859, 117, (multifasciata). 



This genus contains species agreeing in general respects with Fundulus, 

 but having the aspect of Cyprinodon. The gill openings, as in Cyprinodon, 

 are restricted, the opercle being adnate to the shoulder girdle as far down 

 as the upper edge of the base of the pectoral. The body is short, deep, 

 and compressed. Besides the two species known to belong to this genus, 

 multifasciata and dugesi, we provisionally place in it two others, Avhich 

 seem to agree in external characters, though the restriction of the gill 

 openings has not been noticed. (Adinia, a coined name without 

 meaning.) 

 a. Anal with 15 rays; body oblong, the depth 3% to 4; coloration plain or mottled, without 



dark cross bands. 



6. Head rather heavy, about 4 in length; depth of body about 4; eye rather shorter than 



snout, about 4 in head; scales 32 to 35-12; dorsal rays 12. GXTATEMALENSIS, 969. 



bb. Head very thick and heavy, about 3% in length; depth 3 to 3f ; eye shorter than 



snout, 4 in head; scales 35-12; dorsal rays 13 or 14. PACHYCEPHALA, 970. 



aa. Anal with 11 or 12 rays; scales very large; body deep and compressed. 



c. Dorsal rays 15; body crossed by 5 or 6 black cross bands; depth 3 in length; head 3; 



scales 30-11. DUGESI, 971. 



cc. Dorsal rays 9 or 10; body crossed by 10 to 14 narrow pearly bands; depth 2 to 2% in 



length; head 3; scales 25-10. MULTIFASCIATA, 972. 



969. ADINIA GUATEMALENSIS (Giinther). 



Head 4 ; depth 4. D. 12'(13); A. 14 or 15 (16) ; scales 32 to 35-12. Head 

 thick and broad; interorbital space broad, slightly convex, its width 

 being a little less than half length of head. Snout broad, obtuse ; lower 

 jaw slightly projecting beyond upper; mandible longer than eye; eye 

 equal to or, in the larger specimens, less than length of snout, 4 in head, 

 and 2 in interorbital space ; origin of dorsal midway between tip of cau- 

 dal and posterior margin of orbit, over nineteenth scale of the lateral 

 series ; first anal ray corresponding to second of dorsal. Dorsal and anal 

 fins subquadrangular, rather low, longer than high in male, and as long 

 as high in female ; two-thirds of caudal covered with small scales. 

 Brown above and on the sides, pale below ; females with a very indis- 

 tinct dark band along the side ; fins immaculate ; anal with a light mar- 

 gin. Sexual opening of the female not attached to the anterior anal rays. 

 Rivers of Guatemala, and southward, to western Ecuador. (Giinther.) 

 Fundulus guatemalensis, GUNTHEB, Cat., vi, 321, 1866, Lake of Duefias; Lake Amatitlan; 

 Rio Guacalate ; western Ecuador. (Coll. Salvin & Fraser.) 



970. ADINIA PACHYCEPHALA (Giinther). 



Head 3fr ; depth 3^ to 3| . D. 13 or 14 ; A. 15 ; Y. 6 ; scales 35-12. Head 

 very thick and broad ; interorbital space very broad, slightly convex, its 

 width being -J- length of head ; snout broad, obtuse ; lower jaw slightly 

 projecting beyond upper; mandible longer than eye. Eye less than 



