236 BULLETIN 15 4, UNITED STATES NATIONAL MUSEUM 



The above table not only shows that F. hyperi/thra liyperythra 

 (south) may have '' three or two dorsal lines," but that it may also 

 have one. It has already been shown that such 1-lined variants are 

 identical with the suppposedly distinct form, schmidti. In addition 

 the table shows that the northern specimens {hcJd'mgi) usually 

 (scarcely "normally") have two lines and rarely have three. It 

 also fails to verify Van Denburgh's statement that there is rarely 

 one stripe in heldingl^ but in all fairness it must be recognized that 

 his view was expressed at a time when such variants w^ere referred 

 to schmidti whenever possible. If specimens of schviidti (discussed 

 above) had furnished additional data for the above table it would 

 be found that the appearance of one stripe in the southern group 

 would be greatly increased. 



Variation has been recorded in regard to the condition of the 

 scutellation of the frontoparietal area of the 449 specimens under 

 consideration. In 443 specimens the frontoparietal scute was entire, 

 in 2 it was i);irtly divided by a median longitudinal suture, in 3 it 

 was completely divided into tAvo parts by a median longitudinal 

 suture, and in 1 it was divided into three parts by two irregular 

 sutures. 



A few^ rare and interesting variations and abnormalities have 

 been noted in the material examined. The parietals were found to 

 be almost invariably tliree in number, but one example (C.A.S. No. 

 4G869) has four parietals, the interparietal having been crossed by 

 a median longitudinal suture. In C.A.S. No. 8550 the frontoparietal 

 shield is united with the interparietal. Two individuals from La 

 Paz, which are from a series bearing the U.S.N.M. No. 12G23, show 

 a tendency toward tlie union of the dorsal stripes into a single line. 

 In one the two stripes meet and separate several times, apparently 

 at will, and in the other there are prominent anterior and posterior 

 forks. In C.A.S. No. 4C853 from the same locality the two faint 

 dorsal lines lie side by side and give the appearance of a single, dull, 

 middorsal streak. In three C.A.S. specimens. No. 46978 from San 

 Jose del Cabo, No. 46864 from La Paz, and No. 20955 from San 

 Telmo, the back is unstriped posterior to the insertion of the fore- 

 arm, but in these there are traces of the usual two dorsal stripes 

 anteriorly, and the lateral stripes are discernable. A single repre- 

 sentative from San Jacinto, Calif. (U.S.N.M. No. 21517) has a 

 dorsal stripe wdiich is of about the same width and intensity as the 

 lateral stripes, but has the characteristic brownish ground color of 

 the subspecies. 



Range. — This I'ace runner occurs from southwestern San Ber- 

 nardino County in southern California, southward on the entire 

 jieninsula of LoAver California. It inhabits many of the closer 



