1901.] NATURAL SCIENCES OF PHILADELPHIA. 65 



enlarged shield behind the parietals; the tail is shorter; the dorsal 

 spots are more numerous and there are two series of irregular 

 lateral spots. The type specimen in the Academy's collection is 

 from northern Lower California, and there is a second in the 

 National Museum from La Paz. A third, which has just reached 

 me from Mr. Herbert Brown, collected by him at Yuma, Ariz., 

 for the first time estabhshes the species within the United States. 

 This specimen differs from the type in that the rosti*al penetrates 

 between the prefrontals as in P. broumi ; there is but one subocu- 

 lar, and but two post-oculars on one side; there are four temporals; 

 the tail is rather longer, and the spots are more numerous, being 

 forty-one on the body and six on the tail (thirty-two altogether in 

 the type). Yeutrals 183; subcaudals 30. Length 403 mm. (tail 

 40). 



Hab. — Lower California; Yuma, Arizona. 



CYCLOPHIS Gunther. 



Cat. Col. Snakes, Br. Mus., Gunth., 119 (1858); Cope, I. c, 621 ; Lep- 

 tophis B. and G., ?. c, 106 ; Contia (part) Boul., I. c, II, 255. 



Maxillary teeth smooth, equal; one loreal; one preocular; two 

 internasals; one nasal; scales keeled with two pits; anal divided; 

 size small, tail long; head distinct; color green. 



Hab. — Asia; North America. 



CyclopMs aestivus L. 



Coluber cestivus L., Syst. Nat., Ed. XII, 387 (1766); Leptophis cestivus 

 and majalis B and G., I. c, lOG ; Cydophis cestivus Cope, I. c, 621, 

 and Eej). Nat. Mus., 784 ; Contia cestiva Boul., I. c, II, 258. 



Head scales normal; loreal rather long, occasionally absent; 

 oculars 1-2 (of two examples from New Jersey in my collection, 

 one has a sul)preocular on each side, and the other has three post- 

 oculars on one side); temporals 1-2; upper labials 7, the third and 

 fourth in orbit (one from Florida has the fourth and fifth in the 

 orbit on one side); ventrals 148-166; subcaudals 111-148; scales 

 in 17 rows, the outer smooth. Length 920 mm. (tail 330). 



Uniform bright green abov^e; labials and belly yellowish wliite 

 or bright yellow. 



Hab. — New Jersey to Florida, west to the Mississippi, southwest 

 to New Mexico. 



