30 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY 1. 



the Silver-Fin, Luxilus Tcenhtclciensis Kirtland, as has been shown by 

 Professor Cope. 



* 42d species, Yellow Shiner, LUXILUS INTERRUPTUS, Luxile jaunatre. 

 (p. 49.) 



JSTot identified. 



The description contains little that is suggestive, and it might apply 

 to almost any of the small silvery species. 



XVII. Genus, CHUBBY, SEMOTILUS, Semotile. (p. 49.) 

 z=Seniotilus Eaf. 



43d species, Bigback Chubby, SEMOTILUS DORSALIS, Semotile dorsal 

 (p. 49.) 



SEMOTILUS CORPOEALis (Mitchill) Putnam. 



44th species, Bighead Chubby, SEMOTILUS CEPHALUS, Semotile 

 cephale. (p. 49.) 



SEMOTILUS COEPORALIS (Mitchill) Putnam. 



t45th species, Warty Chubby, SEMOTILUS DIPLEMIUS, Semotile ver- 

 ruqueux. (p. 50.) 



Lythrurus DIPLEMIUS (Raf.) Jor. 



Not LeucisGus diplcemius Kirtland {=? Lux. cornutus var.). 

 Sypsilepis diplcemia Cope. 



This can hardly be the Lythrurus diplcemius, as that species has a 

 long anal fin, and the male fish has, instead of " some black warts on the 

 head ", the whole upper surface of the head and neck studded with 

 minute whiti&h tubercles. Moreover, the dorsal spot is not "round", 

 and there is no caudal spot. Still, as I can at present suggest no bet- 

 ter identification, I allow that made by Professor Cope to stand. 



* Diameter one-sixth of total length ; yellowish-olivaceons above, silvery beneath, 

 rufous brown above the head, a rufous line from the dorsal to the tail, two straight and 

 separated half lateral lines, the anterior one above the posterior ; pectoral fins reach- 

 ing the abdominal. Dorsal with 10 and anal with 9 rays. 



A small species, only 3 inches long, called Yellow Chub or Shiner. Seen in the Ohio. 

 Sides opaque, with violet shades. Iris silvery, mouth large, lips very apparent. Fina 

 yellowish, pectorals with 16 rays, caudals with 24. 



t Diameter one-sixth of total length ; olivaceous brown with gold shades above, sil- 

 very beneath ; lateral line double, the anterior and lower curved upwards at the base, 

 reaching to the abdominal fins, the posterior and upper straight from the pectoral fins 

 to the tail ; fins red, a spot at the base of the dorsal and caudal, and many dots over 

 them. Dorsals with nine rays; the anal with eight. 



Length from 3 to 4 inches, often called Minuy or Red-Fin. Observed in the Ken- 

 tucky River near Estill. The male fish has a larger mouth than the female and some 

 black warts on the head. Fulvous brown on the head. Iris large, golden and white. 

 Some black dots on the dorsal and caudal fins ; the caudal spot is on tail and the dor- 

 sal at the anterior base ; they are small and round. The pectoral fins do not reach the 

 abdominal fins ; they have 18 rays ; the tail has 24. 



