1870.] 



455 



[Cope. 



POMOTIS, Cuvier. 



27. PoMOTIS MACtJLATTJS, Mitcllill. 



Morone Mitchill, P. vulga7-is, Holbr. 



From all the rivers of North Carolina east of the Allegheny Range. 

 Identical with specimens from Pennsylvania and Michigan. 



URANIDEA, Dekay. 

 28. TJranidea caeolits^e, Gill. 

 Proc. Best. Soc. Nat. His., 1861. 41. 



Abundant in the French Broad River in Madison County, North Caro- 

 lina. 



APHREDODIRUS, Lesueur. 



29. Aphredodirus SAYA^•xJs, GiJliara. 



Journ. A. N. Sci., Phila., IV, 81, pi. Ill; Dekay, N. Y. Fauna, Fishes 

 p. 35, pi. xxi., fis. 62. 



Abundant in sluggish waters tributary to the Neuse River in Wake 

 County, North Carolina. 



LABIDESTHES, Cope. 

 Fam. Atlierinidm. Premaxillary bones prolonged anteriorly into a roof- 

 shaped beak of elongate form, moderately projectile; reaching posteriorly 

 to the line of the orbit : its teeth in several series. Mandible as long a.s 

 the muzzle. No palatine teeth. 



This genus differs from Chirostoma {Atherinopsis, Blkr.) in the 

 duck-like muzzle, which is almost exactly like that of the Belonesox heli- 

 zanus, though shorter. Like it, the premaxillaries are not coossified, 

 and are separated on the superior surface by a groove between the 

 median portions. The genei-al characters remind one so of Belonesox, as 

 to sti'engthen the belief in the close relationship existing between Atheri- 

 ridte and Cyprinodontidse, though the form is Acanthopterygian, and the 

 latter Malacopterygian. 



LabtdesUies sicculus, Cope. 

 Chirostoma sicculum, Cope. Proc. Acad. Nat Sci., Phila., 1865, p. 81. 

 Form slender, the depth contained in the length (without caudal fin) 

 ^.^ ^ seven times; the length of the 



head 4.33 times in the same. 

 The eye is large and round, 

 contained 3.6 times in the head, 

 1.5 times in the length of the 

 muzzle and once in the inter- 

 orbital space. The top of the 

 head and muzzle are plane, the 

 latter convex transversely, and 

 not exceeded by the extremity 

 of the mandible. Front with 

 a median ridge. A distinct ? mucous pore above each orbit. The teeth 



