'"'\m.'''] PROCEEDINGS <)F THE NATIONAL Ml SEl M. 031 



Three neotropical species are iiicliidtil in ii : 



I. Olio plate ill tho first row of ti'iiiporalH. 



Scales tweuty-livc rows, eleven kec^le.l ; caiulal Hcutollii ? Head iK.t liamletl; .l..r.sal 



spots ; belly partly spotted ,■ cnntinis. 



II. Two jilates in the lirst row of temporals. 



(.'. Parietal platt^ shorter than iniiz/le, measured from front of frontal plate. 

 Abont nine rows of keeled scales ; eandal seiitella not ovt^rHixty-ei;-!!! ; liead not 

 banded; above with roniuled blaek spots; belly tessellated with Idaek 



('. vnlpinus. 

 an. Parietal plate Ioniser than m ri|iial iiiii/./,le. 

 ji. Eight snperior labials. 

 Scales smooth ; scntella?; head iu>l handed: belly not spotted; above with wide 



red spots which are cros.sed by four loiifjitiidinal bands C. rumcvtta. 



Five rows of scales weakly keeled; scntella not exceeding seventy-one; above 



with angnlar red spots ; head banded ; belly tessellated C. (jiillatun. 



About thirteen rows of keeled scales; .sentella not exceeding 1(»J: above with 



four longitudinal bands, the niediiim pair often connected by sjwits; head 



not banded; belly obscurely clondeil C. ijiiailriiitlatiiH 



Keeled rows seven to eleven ; scntella not over ninety-six ; above with brown, 



spots, angular anteriorly, and elongate spots on sides; head not banded in 



adnlt ; belly clouded c. npiloidin. 



Keeled rows seventeen; scntella not above ninety-two; above black or brown 



without or with darker sjiots; head not banded : btdly very darklv colored.. 



C. obHoltiitB. 



[^{i. Nine snperior labials. 



Five rows of scales keeled ; scntella ninety-nine; postgenials transversely divided; 

 above with narrow transverse spots, below clouded ; prefrontal and postor- 



bital headbands C. hairdii. 



III. Three plates in lirst row of temporals. 



Keeled rows fifteen ; scntella seventy-seven ; dorsal sjiots twenty- nine, longer; 

 parietal and prefrontal head-bauds obseurt-; no postociilar baml ; helly col- 

 ored ('. lotnu. 



Scales smooth; sciitella seventy-eight; dorsal spots shorter, 3:1— lo; headbands, 

 with postocular distinct ; belly tessellate<I r. rmnri/i. 



Scales ^T-'J'J rows; nine snjierior labials ; tlorsal and lateral spots large and close 

 together, not beeoining ohscdete ; head red above, with light jiostoeiilar band, 

 and spot on nape i'. Jlavlrufnn* 



Scales iu \\\-'X.\ rows; eight upper labials; dor.sal and lateral sjiots smaller and 

 separated: tliiee bands behind front.al region, .ill markings <li.Ha)ipearing at 



maturity . . . < >i.„i,ihili»,\ 



l\ . lour plates in lirst row of temporals. 



Scales in thirt\'-fivo rows; two or three loreals ; eight upper labials ; dorsal and 

 lateral spots smaller, sejinrated ; three longitiidin.il bands from frontal 

 region '. tiimfpin.'. 



As regards the characters above eiuimeratt'il, I will ninurk, th:il iti a 

 single specimen of the C. spiloiilctf th-re is a rndnncnUU third temporal 

 in the lirst row on each side, one of which is iiit«Mcalat«'d hetween the 

 two postocnlars. in some specimcMs ot C. puttntus there nre in* keels 



h i>. 



*CoLi'HKR Fi.AViiUKt's Cope, Pfoc. Aca«l. Phila. l."?t»(;, i». :U1>; Mexi. 

 tCoLCBKR .MUTAiui.is Cope, I'roe. Amer. Philos. .«?or. 1K-S4, p. 17.'.: Mexi<*o and 

 Guatemala. 



CoLL'HEK riUASris Cope, Pn)c. Acad. I'liila., l-t'.»;, \>. I.h ; iteli/.e. 



