40 



lesciug with the row on the sides ; and, on the posterior third of the length, 

 all the markings have run together completely, being transformed into 

 regular transverse bands. Three black half- rings on the tail. Some of 

 the scales of the rows surrounding the dorsal patches are black-tipped. 

 There is a heightening of the ground-color on the sides in the intervals 

 between the lateral spots, corresponding to what Professor Cope 

 describes as vermilion-colored spots. The bright lemon-colored spots 

 in the same region have disappeared. The total length of the snake is 

 3^ feet. 



CEOTALUS ADAMANTEUS ATROX, Co])e [No. 8564]. 



Crotalus adamanteus atrox, Cope, Check-list, 1875, r53. 



Crotalus atrox, Bd. & GiR., Cat. N. Amer. Eept., 1853, 5, 156. — Bd., P. R. R. Rep., x, 1859, 

 Whipple's Route, Reptiles, 39, pi. 24, f. 3 ; U. S. and Mes. Bound. Surv, ii, pt. 

 ii, 1859, Reptiles, 14, pi. i, 



Caudiaoma atrox, Cope, Mitchell's Res., 1861, 121 ; Proc. Acad. Nat. Sci. Phila., 1863, 

 309. 



Caiidisoma adomaniea atrox, Coues, Wheeler's Geographical and Geological Explora- 

 tions and Surveys West of the 100th Meridian, vol. v. Zoology, 1875, 607. 



Locality: Los Coronados Islands, Pacific coast of Lower California. 



ELAPID^. 



ELAPS EURYXANTHUS, Kennicott [No. 8566.] 



.JElaps euryxanthns, Kennicott, Proc. Acad. Nat. Sci. Phila., 1860. 337. — Cope, Proc. Acad. 

 Nat. Sci. Phila., 1866, 307 ; Check-list, 1875, 34.— Coues, Wheeler's Geographi- 

 cal and Geological Explorations and Surveys West of the 100th Meridian, vol. 

 V, 1875, Zoology, 611. 



Locality: Tiburon Island, Gulf of California. 



COLUBETD^. 



PITYOPHIS SAYI BELLONA, Cope [No. 8565]. 



iPityopMs sayi iellona. Cope, Check-list, 1875, 39. — Cottes, Wheeler's Geographical and 

 Geological Explorations and Surveys West of the 100th Meridian, vol. v, 

 1875, Zoology, 617. 



<€hurcliiltia lellona, Bd. & GiR., Stansbury's Rep. Exp. Great Salt Lake, 1852, 350. 



•PitijoiMs affims, Hallow., Proc. Acad. Nat. Sci. Phila., 1852, 181 ; Sitgreaves's Exped. 

 Zuui & Colorado Riv., 1853, 130, 146, pi. 10. 



