302 Bulletin 47, United States National Museum. 



Minnilus punclulalus, HAY, Proc. U. S. Nat. Mus., 1880. 508, Tuscumbia River, a tributary 



of the Big Hatchee, near Corinth, Mississippi. (Type, No. 27430. Coll. Hay.) 

 Minnilus punctulatus, JORDAN & GILBERT, Synopsis, 198, 1883. 



124. ERICYMBA, Cope. 



Ericymba, COPE, Proc. Ac. Nat. Sci. Phila., 1865, 88, (buccata}. 



Body rather elongate, little compressed; muzzle broad. Premaxillary 

 protractile. Interopercle, suborbital, and dentary bones containing con- 

 spicuous, externally visible, mucous channels; lips thin; 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 part of the head. 

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

 creeks. (Ipi-, an intensive particle; Kv/ufoi, a cavity; in allusion to the 

 development of the mucous channels.) 



499. ERICYMBA 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, (bucca, cheek.) 



Ericymba buccata, COPE, Proc. Ac. Nat. Sci. Phila., 1865, 88, Kiskiminitas River, western 

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

 1866; GUNTHER, Cat., vn, 185, 1868; JORDAN & GILBERT, Synopsis, 204, 1883. 



125. PHENACOBIUS, Cope. 



Phenacobius, COPE, Proc. Ac. Nat. Sci. Phila., 1867, 96, (terelulus). 



Sarcidium, COPE, Hayden's Geol. Surv. Wyom. for 1870, (1871), 440, (scopiferum). 



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 Exoglossum, with which the genus has probably 

 real affinities; upper lip with a callous covering within ; 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 



