220 University of California PvMicaiions. [Entomology 



2. Labopidea simplex (Uhler) 



Similar to preceding in size and form, but the elytral mem- 

 brane is more developed in all the females I have seen. Like 

 nig r I pes, it has a blnish-green color above, with pale pubescence 

 and black antennae, but here the legs and lower surface are 

 mostly pale. Length 5 to 5.5 mm. to tip of membrane. 



Basal depre.ssion of vertex large but sometimes obscure, with 

 hind margin quite distinctly carinate. Callosities .small, promi- 

 nent. 



Dextral genital hook of male enlarged into a nearly circular 

 hirsute plate; sinistral broad as in nigripes, but obtusely pro- 

 duced exteriorly and acutely hooked at its inner angle. 



Color dull bluish-green, becoming yellowish on pronotum 

 anteriorly, on head, legs, and beneath. Frontal black spot 

 obsolete, or indicated by a broad brown arc on either side ; clypeus 

 black, at least at base. Antennae black, middle of second joint 

 more or less distinctly brown ; callosities generally with black arc 

 bounding them behind. Basal suture of scutellum blackish. 

 p]lytra with costal border and cuneus paler, memlirane quite 

 uniformly smoky. Tarsi fuscous or black. Pale pubescence 

 longer and denser than in nigripcs. 



The types were from Colorado. I took both sexes at Boulder 

 in that state, July, 1908, and the Academy of Natural Sciences 

 of Philadelphia possesses a series from Alamogordo, New Mexico, 

 taken in April and ^lay, 1902. As nearly as I can judge from 

 Renter's description, his Ilgoidca grisea seems to be a straight 

 synonym of this species. 



8. Labopidea sericata TThler 



Size and form nearly of nigripcs, male with very long elytra. 

 Color whitish-green, with disk of pronotum and elytra strongly 

 tinged with bluish-green ; upper surface densely clothed with long 

 white pubescence intermixed with deciduous silvery scale-like 

 hairs. Length, female 4.5 mm. ; male 7 mm., to tip of elytra. 



Head proportionately longer and more pointed than in simplex. 

 Base of vertex distinctly carinate in male, scarcely so in female, 

 in which the transverse depression is much reduced. First 

 antennal joint short, scarcely as long as dorsal aspect of the head ; 

 second about an long as hind margin of ])ronotum ; third two- 

 thirds length of second; fourth abt)ut half length of third. Pro- 

 notum short, in male strongly narrowed anteriorly ; callosities 

 large, oval, prominent. Elytra in male very long, apex of corium 

 a little surpassing tip of abdomen ; membrane long, whitish- 

 hyaline, scarcely infuscated; nervures green; in female shorter 



