98 CALIFORNIA ACADEMY OF SCIENCES. 



Ei.is XANTiANA Sauss. San Jose del Cabo, October, 

 and El Taste, 3,400 feet. Numerous specimens. The 

 males appear to be much commoner than the females. 



Elis dorsata Y?i)o>.(iolteca Sauss.) Numerous speci- 

 mens. San Jose del Cabo, October, and El Chinche, 

 September. 



Ei.is trifasciata Fab. I refer to this species, with 

 some doubt, six male specimens from San Jose del Cabo. 



POMPILID^. 



PoMPiLUS ^THiops Cress. El Taste, 3,400 feet. One 

 $ specimen. 



PoMPiLUS PORUS n. sp. 



? . — Clypeus rounded anteriorl}-; front with a faintly 

 impressed line from lower ocellus to base of antennae; 

 hind ocelli separated from each other by a greater dis- 

 tance than they are from the nearest eye-margin ; anten- 

 nas slender, the tirst joint of the flagellum much longer 

 than the second ; e3'es converging towards the ver- 

 tex ; posterior margin of prothorax arcuate ; metathorax 

 rounded behind, not impressed ; tibia? and tarsi strongly 

 spinose, the fore tarsi with a well developed comb; longer 

 spur of hind tibite equal to about two-thirds the length of 

 the first hind tarsal joint; abdomen a little longer than 

 the head and thorax; the apical segments sparsely clothed 

 with black hairs. Black; hind femora except the base, 

 and the tibia? reddish; anterior and posterior orbits, pos- 

 terior margin of the prothorax, and a spot just before 

 the scutellum pale 3'ellowish; the whole insect is clothed 

 wnth a sericeous pile; the face, prothorax, apex of meta- 

 thorax, hind coxa? and the first segment of abdomen more 

 or less with silvery pubescence; wings subhyaline, their 

 apices broadly fuscous, third submarginal cell much nar- 



