OF WASHINGTON, VOLUME XIV, 1912. 37 



Lasconotus pertenuis Casey. 1890, p. 313. 



The most slender species of the genus, very closely allied 

 to the following, though easily recognized by the antennal 

 structure and much smaller, narrower body and the coarser 

 interruptions of the margins of the prothorax. I have seen 

 but two specimens taken at Santa Cruz Mountains, Califor- 

 nia, by Mr. A. Koebele, and two in the LeConte collection 

 from California. Colonel Casey's specimens are from Mon- 

 terey. 



Lasconotus linearis Crotch. 1874, p. 75. 



This species and the preceding are peculiar in showing a 

 tendency towards color markings on the elytra, which have 

 the base and apex chestnut brown, the remainder dark piceous. 

 Described from material "under" bark of sycamore or small 

 forest tree at the Hot Springs in the Santa Inez Mountains 

 (Crotch). There is very little variation in the series of four 

 specimens examined, except in some the light markings of the 

 elytra are more distinct. They were collected by beating 

 young pine trees. If Crotch's specimens really came from be- 

 neath the bark of sycamore it is remarkable. 



U.S. N. M. California: Los Gatos (E. A. Schwarz). 



There are also four specimens of this species in the LeConte 

 collection from California. 



Lasconotus apicalis Casey. 1890, p. 315. 



One of the larger species closely allied to z-cgrandif., but 

 easily separated by the elytral structure and the shape of the 

 prothorax as noted in the synopsis. In this species is seen 

 the beginning of the union of interspaces 5 and 7, which are 

 then prolonged as a single elevation toward the apex, a char- 

 acter which reaches its extreme development in bitomoides, 

 and also the reduction of interspace 3, which is most extreme 

 in concaviis. There is some variation in this species in size 

 and especially the amount of reduction of interspace 3 at the 

 apex. In some specimens the smooth, unelevated area is of 

 considerable extent, perhaps one-third the length of the inter 

 space, while in others it is limited to one-fifth or one-sixth 

 the length. Associated with I*hhi'o$inu$ sp. in 'Cedar' and 

 Cnpressits macrocarpa. 



Hopk. U. S. California: Monterey. 



U. S. N. M. California: Los Gatos. 



Lasconotus schwarzi, raw species. 



Type: No. 14189 U.S. N. M., collected by Hubbard ,S: 

 Schwarz at Victoria, Vancouver Island. 



