220 Bulletin ^7, United States National Museum. 



spring males. Length 12 inches. Streams of Oregon and Washington, 

 from Frazer River, southward, ascending Clark's Fork of the Columbirj 

 as far as Flathead Lake, (Evermanu), and Snake Kiver to Shoshone Falls, 

 (Gilbert & Evermann); often entering the sea; abundant northward; 

 frequents the spawning beds of the salmon where it devours their eggs. 

 Specimens from Nanainio sent us by Mr. Ashdowu H. Green, who says 

 that this is the only C;ipr'mo\d found in Vancouver Island, (cauriis, the 

 northwest wind, hence cauri)n(s, north western.) 



Cii]>i-imis {Leiwiseus) caHrtnus, EiCHARDSON, Fauua Boreali Amer., ui, 304, 18;Jtl, Columbia River 



at Fort Vancouver. 

 Miilocluilns frali'radii'* GiRARD, Proc. Ac. Nat. Sci. Phila., 1856, 158, said to }io fnini Monterey, 



California, jirubably erroneously. (Type, No. 211 (27i;8). Coll. Trowlividgi-. i 

 Miihiclifihifi hilfraJ'iK, Agassiz k PICKERING, Amer. .loiuu. Sii. Arts, 1855, 200, Columbia River at 



Fort Vancouver. (Type, No, 212. Coll. Suckley.) 

 LeHc<-S(.(,i«s raurinns, GuNTIIF.R, Cat., VII, 270,1868. 

 MijUichi'lJiis nmrinnx, JORDAN & GILBERT, Synopsis, 224, 1883 ; Evekmann, Bull. U. S. Fish Comm., 



.\i, 1891, 43, pi. 10, fig. 2. 



Ill, STYPODON, Garman. 



SlypoiJon, Garman, Bull. Mus. Conip. Zoul., viii, 90,1881, {signifer). 



Body oblong, compressed, covered with large, deciduous scales. Lateral 

 line complete, decurved. Dorsal and anal fins short. Mouth small, 

 anterior; premaxillaries protractile; fold of lower lip not crossing the 

 symphysis ; lower jaw trenchant, without horny covering ; no barbels. 

 Gill rakers short. Pharyngeals strong. Teeth 3-3, of the Mylocheilxs 

 type, more or less cylindrical, with rounded grinding surfaces ; posterior", 

 more slender and subconical. {aTviror, stump ; u6org, tooth.) 



353. STYPODOX SIONIFER, Garman. 



Head 3f ; depth 3|. D. 8 ; A. 8. Scales 6-35-2. "Teeth 3-3, stout, stump- 

 like, withconvexsummits." Dorsaland ventraloutlines similar ; eye large, 

 longer than snout. Mouth oblique, the maxillary not reaching front of 

 eye ; lower jaw the longer. Pectorals not reaching veiitrals, the latter to 

 anal. Brown ; silvery below ; a broad, brown lateral band, bordered 

 above by a narrow silvery line. Lago de Parras, an isolated lagoon in 

 Coahuila, Mexico. (Garman.) A singular fish o^' uncertain relations, 

 known only from the original type, {dgnum, sign ; fero, I bear.) 



Sli/podon sii/nife); Garman, Bull. Mus. Comp. Zool., viii, 90, 1881, Lago de Parras, Coahuila, 

 Mexico ; Jordan & Gilbert, Synopsis, 224, 1883. 



112. SEMOTILUS, Rafinesque. 

 (Fall-fishes.) 



Semofllm, Rafinesque, Tchth. Oh., 49, 1820, {dorsnU<<=:atroinaciilalm). 



Leiiconnrnns, Heckel, Russeggers Reisen, i, 1843, 1042, {" ciirynolencus" r^zcorporalis). 



Cheilonenm.i, Baird, in Storer's Hist. Fishes Mass., 285, 18.")5, (jmhlielhis^icorporahii). 



Body robust; head large; mouth terminal, wide, the upper jaw pro- 

 tractile ; a small barbel on the maxillary just above its extremity, not at 

 its tip as in most other American minnows. (In young examples the bar- 

 bel cannot always be found.) Intestinal canal short; teeth 2, 5-4, 2, 



*MiiJoilieihisfri(l(i-nihis, GiRARi>. Acoorilins to Girard's descripti.:;! and figurfi this speciesis 

 slondertT than .^^//'»(■/(fl7"K caHWuH.'!, witli shorter head and suiallor scales. Head 4 J in U'ngth; 

 scales in lateral line about 85. D. 8 ; A. 9. Monterey, California, (Girard). No recent collector 

 has found any Mylocheilus in California and this locality needs coutirmatiou. {jralercnlm, a little 

 brother.) 



