302 Bulletin 41, United States National Mtiseum. 



MiiiiiilKs imm-liilatux. Hay, Pioc. U. S. Nat. JIus., 1^8(1. 508, Tuscumbia River, a tributary 



of the Big Hatchee, near Corinth, Mississippi. (.Tyjie, No. 274110. Coll. Hay. J 

 Mimtilns puncliihilidi, Joudan A Gilbeut, SynopsiB, 198, ISS.'S. • 



124. ERICYMBA, Cope. 



Ericymha, Cope, Proc. Ac. Nat. Sci. Pliila., 1805, 88, (bticcata). 



Body rather elongate, little conipreseed; muzzle broad. Premaxillary 

 protractile. lutcropercle, suborbital, and dentary bonee containing con- 

 spicuous, externally visible, mucous channels; lips thiu; no barbel. 

 Teeth 1, 4-4, 0, without grinding surface, hooked, the edges entire. 

 Scales rather large; the lateral line continuous. Dorsal fin above ven- 

 trals. Anal basis short. Silvery fishes of small size, known at once from 

 all other minnows by the cavernous bones of the lower jiart of the head. 

 One species known ; a curious and interesting little fish of the larger 

 creeks. (I pi-, an intensive particle; KvfiiS?/, a cavity; in allusion to the 

 development of the mucous channels.) 



499. EKICYMB.i BUCCATA, Cope. 



Head 4 ; depth 5 ; eye large, 4 in head. D. 8 ; A. 8 ; scales 5-33-3 ; teeth 

 1, 4-4, 0. Body fusiform, rather elongate, little compressed, the back not 

 elevated. Head rather long, somewhat depressed above, with broad and 

 prominent muzzle. Mouth rather small, horizontal, subinferior, the lower 

 jaw considerably shorter than upper; upper lip below level of pupil; 

 maxillary not reaching to eye; dentary -bones dilated, the mucous chan- 

 nels conspicuous. Suborbital very broad, silvery, with an elevated longi- 

 tudinal ridge and conspicuous cross lines; opercle small. Fins small, 

 dorsal over ventrals. Scales moderate; lateral line nearly straight; 

 breast scaleless; 15 large scales before dorsal. Color olivaceous, rather 

 pale; sides bright silvery with bluish reflections; a dark dorsal streak, 

 conspicuous posteriorly; fins plain; males without tubercles or bright 

 colors. Length 3 to 5 inches. Michigan and western Pennsylvania to 

 Kansas and southward to West Florida; locally very abundant. One 

 of the most remarkable of our little minnows, {hiicca, cheek.) 



Ericymha bwcalri, Cope, Proc. Ac. Nat. Sci. Phila., 1865, 88, Kiskiminitas River, western 

 Pennsylvania, a tributary of the Monongahela. (Coll. Cope); Cope, Cypr. Penn., 361, 

 1866; GfJNTHER, Cat., vii, 185, 1868; Jordan & Gilbert, Synopsis, 204, 1883. 



125. PHENACOBIUS, Cope. 



Phenacobiiis, Cope, Proc. Ac. Nat. Sci. Phila., 1867, 96, (lerelidns). 



Sarcidium, Cope, Ilayden's Geol. Surv. Wyom. for 1870, (1871), 440, {acopiferitm). 



Body elongate, little compressed. Head moderate, subterete ; mouth 

 inferior, the lower lip thin mesially, but enlarged into a fleshy lobe on 

 each side toward the angle of the mouth, thus presenting a superficial 

 resemblance to that of Exo(jlossum, with which the genus has probably 

 real affinities; upper lip with a callous covering Avithin ; dentary bones 

 distinct, except at symphysis. No barbel. Upper jaw protractile. Teeth 

 4-4, hooked, without grinding surface. Scales rather small; lateral line 

 complete. Dorsal fin in front of ventrals ; anal basis short. Isthmus 



