18 



UNITED STATES AND MEXICAN BOUNDARY, 



List of specimens. • 



Catal. 

 No. 



No. of I Aire. 



spec 



i 



20 



721 

 722 

 723 



30 



18 



2 



10 



Adult. 



Locality 



Brazos Santiago, Te^as 



Young Prazos, Texas 



. .do. . 

 . .do. . 



Indianola, Texas ........ 



St. Joseph's Island, Texas 



When collected. Whence obtained. 



1853 

 1853 

 1853 

 1853 



Major Emory 



do 



G. Wiirdemann 



G. Wiirdemann . . 



Nature of 

 specimens. 



do 



do 



Alcoholic . . 



do 



Collected by 



G. Wiirdemann . . 

 John H. Clark . . # 



Dr. C.B.Kennerly. 

 G. Wiirdemann . . 



NEOMAENIS, Girard. 



Gen. Char — Mouth large, not very protractile. Jaws equal ; velvet-like teeth along the middle and front of the vomer, 

 along the palatines and jaws ; the latter exhibiting an exterior row of larger, acute, and conical ones ; whilst two canine-like, 



still larger, exist at the extremity of the upper jaw. Tongue smooth and toothless. Edge of preopercle finely serrated. Gill 

 apertures continuous under the throat ; branchial rays seven. One continuous dorsal fin. Caudal fin posteriorly sub-truncated 

 or sub-emarginated. Three spiny rays at the anterior margin of the anal. 



NEOMAENIS EM AEGINATUS, G- r d . 



Plate IX, Figs. 5—8. 



Spec. Char. — Body moderately elongated, compressed, sub-fusiform in a profile view. Head sub-conical, contained three 

 times and a half in the total length. Posterior extremity of the maxillary extending to a vertical line drawn somewhat 

 inwardly to the anterior rim of the orbit. Eye sub-circular ; its longitudinal diameter entering about four times in the length 

 of the side of the head : the rostral distance in advance of the eye being somewhat more than one of its diameter. External 

 soft ray of ventrals prolonged into a membranous thread stretching beyond the posterior margin of these fins, although not 

 reaching the origin of the anal, when bent in that direction. The caudal fin, which constitutes about the fifth of the entire 

 length, is posteriorly sub-concave. The origin of the dorsal is placed opposite the base of the pectorals, the spinous portions 

 being longer than the soft . The origin of the anal is situated posteriorly to the anterior soft rays of the dorsal . Ventrals 

 inserted behind the base of the pectorals. 



Syn. — Lobotes emarginatus, B. & G. in Ninth Ann. Rep. Smiths. Instit. (1854) 1855, 332. 



The scales are well developed, somewhat deeper than long, except in the lateral line, where 

 they are also considerably smaller and posteriorly tapering ; radiating furrows may be observed 

 upon their anterior section alone, their posterior section exhibiting fine pectinations. 



Br. VII : MI ; D X, 14 ; A III, 8 ; C 5, 1, 8, 7, 1, 6 ; V I, 5 ; PI, 15. 



The ground color is greenisb olive with oblique, sometimes, undulating series of purplish 

 brown spots, one of which on each scale, extending likewise over the vertical fins and occasion- 

 ally confluent, constituting continuous narrow bands. The throat and abdomen are rather 

 yellowish and unicolor. 



Plate IX, fig. 5, represents Neomaenis emarginatus, size of life ; fig. 6 is a scale from the 



1 



from 



abdominal 



region. 



List of specimens. 



Catal . 



No. of 



No. 



spec. 



719 



1 



738 



1 



Locality 



When col- 

 lected. 



Whence obtained. 



Brazos Santiago. Texas 



Mouth of Rio Grande del Norte. 



1853 



1853 



G. Wiirdemann 

 Major Emury.. , 



Xature of 

 specimens. 



Collected by 



Alcoholic. G. Wiirdemann 



do 



Jno. H. Clark 



