546 PKOCEEDIXGS OF THE ACADEMY OF [DeC, 



Ericymba buccata Cope.* 



Proc. Acad. Nat. Sci. Pliila., 1865, p. 88. Kiskiminitas River. 



Head 3^; depth 5; D. iii, 7, i; A. iii, 1, i; P. i, 14; V. i, 7; scales 

 34 + 2; scales above 1. 1. 5; scales below 1. 1. 4; predorsal scales 17; 

 head width 2 in its length; head depth at occiput If; snout 3; eye 

 3^; maxillary 4; interorbital Z\] first branched dorsal ray 1|-; anal ray 

 1|; least depth caudal peduncle 2|; upper caudal lobe trifle over 1; 

 pectoral 1^; ventral 2. 



Body compressed, elongate, slender, back not elevated though upper 

 profile little more convex than lower, deepest at dorsal origin, edges 

 mostly rounded and only upper and lower caudal peduncle surfaces 

 with traces of median low obsolete keel. Caudal peduncle rather long, 

 compressed, least depth about 2^ its length. 



Head elongate, moderately compressed, somewhat flattened sides 

 slightly convergent above with lower surface slightly broader than 

 upper, upper profile somewhat evenly convex, more inclined than 

 straight lower one. Snout convex, shghtly protruding, long as wide. 

 Eye large, ellipsoid, near upper profile, center trifle before head center. 

 Mouth small, inferior, scarcely inclined, obtuse edges not firm. Pre- 

 maxillaries protractile down in front. Maxillary rather concealed, 

 to front nostril. Lips fleshy. Mandible depressed, small, rami little 

 elevated inside mouth. Tongue thick, fleshy, depressed, rather far 

 back. Nostrils together, on snout side above, frenum last fourth in 

 snout, anterior circular, posterior crescentic. Interorbital broad, 

 shghtly evenly convex. Preorbital about H in eye, wudth about If. 

 Other suborbitals all much narrower, postorbitals scarcely evident. 

 Posterior margin of preopercle concave to curve posteriorly below. 

 External conspicuous mucous chambers along each side of head below 

 eye and along mandible surface below. Upper series about 7 cells and 

 mandibular series about 9, on each side of head. 



Gill-opening forward to upper hind preopercle margin, about last 

 third in head. Rakers 1+4 short firm robust processes, thick set, 

 about 4 in filaments, latter 1^ in eye. Pseudobranchise small, less 

 than half of filaments. Least isthmus width H in eye, lower surface 

 broadly depressed. Teeth 1, 4-4, 1, hooked strongly at tips, without 

 grinding surfaces but edges entire. 



Scales in series parallel Avith 1. 1., mostly uniform except little smaller 

 on breast and median dorsal and ventral body-edges, striae radiating, 

 all rather broadly exposed. Caudal base scales not smaller than 



* Cope includes Phenacobius teretulus Cope as probably occurring in western 

 Pennsylvania, thus purely hypothetical. 



