LIZARD CXEMIDOPHORUS PERPLEXUS IVIASLIN, ET AL. 339 



that they had been collected. The possible ways by which the 

 Smithsonian Institution could have acquired them are many. They 

 might have been donated through Gambel's wife directly or through 

 her brother, might have been sold to someone by Gambel's wife, and 

 subsequently donated, might have been received from the Academy 

 of Natural Sciences, purchased by some Smithsonian agent such as 

 John Kirk Towaisend, a friend of Gambel's, etc. 



How the other specunens of C. perplexus (so identified at that 

 time) got into Baird's hands at the Smithsonian is an easier problem. 

 General Churchill was a close personal friend of the Bairds in Carlisle, 

 Pa., and indeed became Baird's father-in-law. Colonel Graham's 

 collections were actually made for him under orders by John H. 

 Clark, and Clark had been a student of Baird's at Carlisle College. 

 Rowan Kennerly, who also collected one of the early, but not syntypic, 

 USNM specimens of C. perplexus, had also been one of Baird's 

 students. 



In summar}'', the type of Cnemidophorus perplexus was undoubtedly 

 not collected in "Calif.," in "W. Texas," or during Gambel's "last 

 journey to California"; but w^as probably collected sometime during 

 the last week of July 1841 during Gambel's first journey to California. 

 The type locality is probably the valley of the Rio Grande in Sandoval 

 County, N. Mex., in the vicinity southwest of Santa Fe. 



Description: We are now faced with a paradox, namely the 

 identification of a type. Cope's (1900, p. 573-574) description of 

 the specimen for the most part is accurate. The specimen is in fair 

 condition but rather soft, and as Burt (1931, p. 122) points out the 

 tail is now incomplete. Cope's (loc. cit.) measurements, therefore, 

 are probably as accurate as any which can now be made. Our own 

 measurements agree essentially with his. 



USNM 3060, mature female, possessing nearly mature ovarian 

 eggs. Total length, 260 mm. (according to Cope); length of head 

 and body, 86 mm.; length of head to posterior edge of auditory 

 meatus, 20.7 mm.; length of head to posterior face of jaw articulation, 

 20.3 mm.; length of forearm from axilla, 27 mm.; length of hind leg 

 from inguen, 58 mm.; width of head, 11.6 mm. Interparietal twice 

 as long as wide, narrower than parietals; a pair of frontoparietals; 

 third and fourth supraoculars completely separated from fronto- 

 parietals by a series of small scales; first and second supraocidars 

 broadly in contact with frontal; five scales in both anterior and 

 posterior occipital rows, anterior nasals 1-1; posterior nasals 1-1; 

 loreals 1-1; preoculars 1-1; suboculars 4-3; frenoculars 0-0; supra- 

 labials 6-6, counting first scale in contact with last subocular; infra- 

 labials 7-6; chinshields .5-5, first pair in contact throughout their 

 length; chinshields separated posteriorly from infralabials by 4-4 



