292 PROCEEDINGS OF THE ACADEMY OF [April, 



length lit to 2f inches. Cotype of L. lucidus 2. Also 10 examples,, 

 from Marshfield and Sedalia, Mo. 



Notropis umbratilis lythrurus (Jordan). 



Head 3| to 4^; depth 3£ to 4£; D. iii, 7, i; A. iii. 10. i; scales 

 often 37, sometimes 35, 39 or 41 + usually 2, rarely 3; usually 

 10 scales above 1. 1., sometimes 9; 5 scales below 1. 1. ; often 26 

 or 22 predorsal scales, seldom 23; snout 3tV to 3\; eye 3^ to 3f ; 

 maxillary 2£ to 3; interorbital 2f to 3; teeth 2, 4-4, 2; length 2& to 

 2f inches. Seven examples from Indiana, and Lansing, Mich., the 

 latter recorded as Hypsilepis diplcemia Cope. 9 



Notropis umbratilis aniens (Cope). PI. XXI, fig. 56. 



Hypsilepis aniens Cope, Proc. Acad. Nat. Sci. Pliila., 1867, p. 163. Head 

 of Roanoke River, Va. 



Head 4 to 44; depth 4£ to of; 1). iii, 7, i; A. usually iii, 9, i, often 



iii, 10, i, occasionally iii, 8, i, seldom iii, 7, i or iii, 11, i, rarely iii,. 



12, i; scales often 40 to 42, seldom 35 or 39 4- usually 2 or 3, rarely 



4; usually 8 scales above 1. 1., seldom 7, rarely 9; usually 4 scales 



below 1. 1., rarely 5; often 24, 26 or 27 predorsal scales, sometimes 



22, 23 or 25; snout 3& to 3$ in head; eye 3 to 3f; maxillary 2f to 2|; 



interorbital 3 to 3£; teeth 2, 4-4, 2; length 2\ to Z\ inches. Cotypes 



of H. ardens 48 (type No. 3,268, A. X. S. P.). Also 176 examples 



from S. Fork of Cumberland River, Tenn. 



Explanation of Plates XV-XXI. 



Plate XV — Fig. 1 — Notropis bifrenatus (Cope). Example from Holmesburg,. 

 Phila., Pa. 

 Fig. 2 — N. cayuga Meek. Example from Silver Lake, la. 

 Fig. 3 — N. fretensis (Cope). Type of Hybopsis fretensis Cope. 

 Fig. 4 — N. deliciosus (Girard). Cotype of Montana deliciosa Girard. 

 Fig. 5 — N. deliciosus (Girard). Type of Hybognathus slramineus Cope. 

 Fig. 6 — N. deliciosus (Girard). Type of Hybopsis missuriensis Cope. 

 Fig. 7 — N. volucellus (Cope). Example from Hicksville, O. 

 Fig. S — N. procne (Cope). Cotype of Hybognathus procne Cope. 



Plate XVI — Fig. 9 — N. procne longiceps (Cope). Type of Hybopsis longicep* 



Cope. 

 Fig. 10 — X. blennius (Girard). Cotype of Alburnops blennius Girard. 

 Fig. 11 — N. illecebrosus (Girard). Cotype of Alburnops illecebrosus Girard. 

 Fig. 12 — N. gilberti Jordan and Meek. Cotype. 

 Fig. 13 — N. boops Gilbert. Example fromBlue River, Ind. 

 Fig. 14 — N. hudsonius selene (Jordan). Example from Sparrow Lake,. 



Ont. 

 Fig. 15 — N. h. amarus (Girard). Type of Hybopsis phaenna Cope. 

 Fig. 16 — N. lutrensis (Baird and Girard). Cotype of Cyprinella sauvii 



Girard. 



8 Proc. Acad. Nat. Sci. Phila., 1864, p. 279, and I. c, 1867, p. 162. 



