44 



PEOCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 73 



Measurements. — u.s.n.m., no. sosei, 



adult male 



Length of head 35 mm. 



Length of body 95 mm. 



Length of tail 200 mm. 



Total length 330 mm. 



Width of head over orbits 20 mm. 



Coloration. — Above and on sides pea green, mottled with black or 

 brown; legs also pea green with prominent black splotches, in some 

 instances taking the form of more or less indistinct transverse cross- 

 bands; lower surfaces yellowish, uniform or spotted with brown; 

 throat grayish, mottled; chin dark. The young are green through- 

 out, being somewhat lighter on the under parts. 



Remarlcs. — This species is very closely related to clarlci, erytJiromelas, 

 and defensor, and a comparison of it with these species is given under 

 the remarks on erytJiromelas. 



Material examined. — 



Specimen 



Sex Age 



Locality 



Date 



Collector 



Remarks 



Brit. Mus.: 

 2 „ 



61. 



(?) 



Paris Mus.: 



5916. 



M. 



M. 



M. 



Adult... 



.do. 

 .do. 



..do., 

 .-do.. 



Hamburg 

 Mus.: 



661 



662 



735 



1208 



1717 



3200 



U.S.N.M.: 



30127 



30561 



30562 



30563 



30564 



30565 



30566.... 

 30567—. 



/M. & 

 I F. 

 fM.& 

 I F. 



M. 

 F. 

 M. 



..do. 

 ..do . 



...do.. 

 _..do.. 

 ...do.. 



F. 



M. 

 M. 

 M. 

 M. 

 F. 

 M. 

 M. 



Adult. 

 ...do.. 

 ...do.. 

 ...do.. 

 __-do.. 

 ...do.. 

 ...do.. 

 ...do-. 



Oaxaca, Mexico. 



.do. 



Tehuantepec city, 

 Oaxaca, Mexico. 



(?).-- - — -. 



Oaxaca, Mexico. 



-do. 

 .do. 



"Mexico" 



do-. 



(?) - 



Hugma, Terminos... 



"Mexico". 



(?) - 



Tehuantepec, Oaxaca. 



!I"]do""'"I"""i; 



do 



do 



do 



do 



Nov. 11, 1841 



Sept. 30, 1903 

 pet. 10, 1890 



March, 1841.. 

 (?) - 



Purchased from 

 Bocourt collec- 

 tion. 



H. Gadow 



A. C. Butler 



(?)- 

 (?)- 



F. Sumichrast. 

 do 



1878. 

 1878. 

 1879. 

 1891. 

 1894. 

 1904. 



(?)- 

 (?)- 

 (?)-. 

 (?)-. 

 (?)-- 

 (?).- 

 (?).- 

 (?)- 



Fischer 



do 



Schilling.. 



Peaersen 



Nepperschnids. 

 Poppinhausen. - 



F. Sumichrast.. 



do 



do. 



do 



....do.. 



-...do 



..-.do 



-—do 



5 specimens. 



Type. 

 Stuffed skin. 



2 specimens. 

 Do. 



Do. 



A good defies 

 of the species. 



CTENOSAURA CLARKI, new species 



Plate 27 



Type.— M.C.Z. No. 22454, male, paratype. U.S.N.M. No. 21499, 

 female. 



Type locality. — Ovopeo, Michoacan, Mexico. 



Diagnosis. — Dorsal crest indicated by 80 slightly raised scales. 

 Tail shorter or equal to length of head and body, its upper surface 

 with whorls of very large subequal spines, directed upward and 



