TEIID T.IZAT^DS OF THE GENUS CNEMIDOrHOHUS 127 



and it l»('c-()iii('s ii|)|):ir('nl tliat tlic presence or absence of either lines 

 ov s[)ots can not he nsed as a (na<inostic character. 



As luieht he expected, the- phases and variations of perplexu.s have 

 been given a series of taxononiic desi<!;nations. The striped, un- 

 spotted forms are as follows: sedilneatus (6-striped), velox (G to 7 

 striped), pci-plccu^s (T-striped), (mzonae (7-striped), and octoUneatus 

 (8-striped). The striped, spotted forms are gulans of the Sonoran 

 region and the perplejini,s of Gadow (1906). A transition to the 

 cross-barred phase is shown in septemvittatus^ «nd the end phase 

 itself has been called scalwris. The nature and value of these designa- 

 tions will be discussed here in the order given. 



The G-lined, unspotted, examples have often been called sexUneatus 

 because of their appearance. They differ in several respects from 

 that subspecies, however, as shown below in the diagnosis. The 

 writer is unable to recognize Cnem'nlophorus gulans velox ^ described 

 from northern Arizona by Springer (1928, p. 102). It is stated in 

 the description that there are " seven stripes, central faint," so the 

 types may be regarded as intergrades between the G and 7 lined indi- 

 viduals of pei'plexus. If more specimens had been examined, it 

 would be expected that the middorsal or seventh stripe w^ould have 

 been found to be absent in part of them, and present anteriorly as a 

 vestige in others.^' 



As indicated above, perplexus^ as hitherto, recognized, is the 7- 

 striped pliase of this lizard. One of these individuals served as tlie 

 type of C. arizonae Van Denhuigh (189G/>, p. ^44), who found that 

 it had the " anterior nasal in contact with the second upper 

 labial." This character was used by Stejneger (1890) in the diag- 

 nosis of lahialis from Cerros Island and it is no doubt this systematic 

 emphasis that caused Van Denburgh to look for it in perpJexus. In 

 1913, Van Denburgh and Slevin (p. 408), after the examination of 

 additional specimens from the types locality, Fairbank, Ariz., Avrote 

 that "While none of these has the nasal in contact with the second 

 labial, this relation is found on one side of the head in a specimen 

 with the coloration usually seen in the young of (juhiris {=^ spotted 

 pefplexus). It may be. therefore, that arizotiae is based on an ab- 

 normal individual of (julariH^ which differs from the usual type in 

 coloration, in tlie arrangement of the nasal and second labial plates, 

 in tlie number of femoral i)oi'es, and in the size of the postantebra- 

 chial plates." Although here admitting the weakness of arizonae, Van 

 Denburgh did not synonymize it Avith perplexus until 1922 (p. 495), 

 at which time he wrote as follows: "I recently secured from El 

 Paso, Tex., two specimens of perplexus. One of these specimens has 



"A recent examination of tlie tyiie (Butler Univ. No. 848) actually reveals tlie latter 

 condition, tbe ve.stige of a middorsal stripe being present only anteriorly. 



