

ICHTHYOLOGY. 



56 



8. MONIANA GRACILIS, Ord. 



A very graceful and slender species, resembling most M. lutrensis, from which it, however, 

 differs by a much smaller head and a more arched back ; the body itself being more compact. Ash 

 grey above, yellowish white beneath ; flanks silvery. 



Syn.— Moniana gracilis, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 201. 



List of specimens: 



Catal. 

 No. 



No. of 



spec. 



116 



7 



Locality 



When 

 collected. 



Whence obtained. 



Acapulco, near Monterey, New Leon.. 



1853 



Nature of 

 specimen. 





Lt. D. N. Couch 



Collected by 



Alcoholic- 



Lieut. Couch 





9. MONIANA GIBBOSA, Grd. 



Plate XXX, Figs. 9—12. 



May readily be distinguished from all its congeners by a short and arched body, resembling a 

 Cyprinodon as much as any fish we might compare it to. Pale reddish above; whitish beneath; 

 sides silvery. 



Syn. — Moniana gibbosa, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 201. 



Plate XXX, fig. 9, represents Moniana gibbosa, size of life ; fig. 10 is a dor 

 a scale from the lateral line ; and, fig. 12, a scale from the abdominal region. 



n, 



List of specimens. 



Catal. No. 



No. of spec. 



1C5 



3 



Locality. 



Brownsville, Texas 



When 

 collected. 



Whence obtained 



1852 





Nature of 

 specimen. 



Collected by- 



Captain Van Vliet Alcoholic' Captain Van Vliet 





10. MONIANA PROSERPINA, Grd. 



Is remarkable for its slender body, sub-conical head, and very small mouth. The eye is of 

 moderate development. The total length is two inches and a quarter, the head constituting 

 the fifth part of it. Eleven rows of scales may be counted upon the line of greatest depth of 

 the body. Greyish brown above ; metallic greyish white upon the sides and beneath. 



Syn. — Moniana proserpina, Grd. in Proc. Acad. Nat. Sc. Philad. VIi'I t 1856, 200i 



List of specimens. 



Catal. 

 No. 



Cor. No. No. of 



of teeth. 



spec 



117 



2702 



When 

 collected. 



Whence obtained. 





Nature of 

 specimen 



Collected by 



Adult. Devil's river, Texas.. 



1851 



Col. J. D. Graham.... Alcoholic. John II. Clark 





