ICHTHYOLOGY 



69 



Plate XXXV, fig. 1, represents Hydrargyra similis, size of life. Fig. 2, an outline from 



above. Fig. 3, a dorsal scale. Fig. 4, an abdominal scale, 



same species, also size of life. Fig. 6, an outline from above 

 a scale from the abdominal region. 



List of specimens. 



Fig. 

 Fig 



5, is the male sex of the 

 7, a dorsal scale. Fig. 8, 



Catal . 

 No. 



No of 

 spec. 



Age & Sex. 



Locality. 



When 

 collected. 



Whence obtained. 



Nature of 

 specimen. 



Collected by — 



651 



12 



Adult c? & Q 





Col. J. D. Graham. . . . 



Alcoholic. 



Jno. H. Clark.. 



FUNDULUS GRANDIS, B. & G. 



Plate XXXVI. 



Spec. Char. — The body is rather plump, its greatest thickness being somewhat more in the male and somewhat less m the 

 female than the fourth of the total length, in which the head enters about four times. Scales on the occiput and opercular 

 apparatus very large. Diameter of the eye entering about five times in the side of the head. Caudal posteriorly rounded. Anal 

 inserted under the posterior portion of the base of the dorsal, the tips of the rays of both these fins being nearly even : they are 

 more elongated in the male than in the female. 



Syn.— Fundulus grandis, B. & G. in Proc. Acad. Nat. Sc. Philad. VI, 1853, 389. 



The dorsal region is bluish black ; the sides greyish, with yellow spots. Beneath dull yellow. 

 Dorsal and caudal fins in the male deep metallic black, yellow spotted, external margin yellow; 

 other fins yellowish ; base of anal also spotted. Body and fins in the female unicolor. 



D 11 ; A 12 ; C 2, 1, 9, 9, 1, 2 ; V 7 ; P 18. 



Plate XXXVI, fig. 1, represents the female sex of Fundulus grandis, size o1 

 outline from above. Fig. 3, a dorsal scale. Fig. 4, an abdominal scale. F 

 sex of the same species, also size of life. Fig. 6 ; an outline from above. Fig. 

 Fig. 8, an abdominal scale. 



List of specimens. 



Fig. 2, an 



5 



7 



Catal. 



■ 



No. 



No. of 



spec. 



650 



5 



Sex and age 



Locality, 



When 

 collected . 



Whence obtained 



Nature of 

 specimen. 



Adult (J & Q Indianola, Texas 



1851 



Col. J. D. Graham.... Alcoholic. 



Collected by 



Jno. II Clark.. 



POECILIA, ISchn. 



' It having been ascertained that Mollinesia is the female sex of Poecilia, the species hitherto 

 described under these two heads must necessarily come under that of Poecilia alone, which has 

 priority. Much is yet left undone as to the natural history of these fishes. 



The genus Poecilia is closely related to Limia of Poey, from which it differs by a more back- 

 ward position of the anal and ventral fins as compared to the dorsal. The latter, in the male 

 sex, acquiring likewise a development which it never reaches in Limia. The anal tin, moreover, 

 has the same structure in both sexes, and which is not the case in Limia. 



