181 



Anal suckers, while well defined, are small and separated by more 

 than twice their diameter. A bristle projects laterally from the base 

 of the first hind leg. This leg exceeds the end of the abdomen by 

 the last three joints. The second hind leg does not reach the end of 

 the abdomen. A bristle on the outer apex of the third and fourth 

 joints of first hind leg. Length of the five males, 318 to 327 micrm. 

 Width, 143 micrm. 



Figure 99. 

 Copidognathus californicus 



Figure 100. 

 Copidognathus californicus 



Legs of female all of approximately equal development and 

 length. Abdomen without appendages, tapered behind and cleft 

 half way from tip of abdomen to coxae four. Two stout bristles on 

 each side of this forked abdomen ; the posterior pair situated near 

 the tip, pointing directly back, and a little shorter than the other pair 

 which are situated one-third of the way from the tip of abdomen to 

 coxa four, and point to the side and about 30 degrees back. Length 

 of the seven females, 410 to 450 micrm. Width, 143 micrm. 



Among the thirteen specimens which I took from Petrochelidon 

 lunifrons, there was one female which differed from the others as 



