

118 AMEKTCAN COLEOPTERA. 



Li. :i rill ;tf ii Ins sp. nov. — Very closely allied to liratus, from which it may 

 be separated with certainty by the longer tempo ra and the sexual characters. 

 Aside from these there are certain other differences which become evident on 

 comparison. The antenna? here are distinctly more slender than in liratus, the 

 prothorax is, as a rule, much less narrowed at the middle — though this is a vari- 

 able character in both species — the punctuation of the pronotum is denser, and 

 the discal costre less sharply denned. (PI. Ill, figs. 12, 12a, 126 and 12c). Length 

 1.9-2.25 mm. 



Hab. — California (San Francisco; Santa Barbara; Pomona; 

 Catalina Id.). 



This is a common species in maritime Southern California, occur- 

 ring on various trees and plants. The tooth near the apex of the 

 middle tibia in the % is very minute and easily overlooked. In 

 So. Cal. specimens, which may he considered typical, the humeral 

 interval is not at all costate, being a little more convex and promi- 

 nent at hase. In some San Francisco examples possessing the same 

 male characters and the long tempora, and therefore held to he 

 identical, the humeral interval is more or less costate or suhcostate 

 toward the base, approaching in this respect costico/li*. 



I must admit that notwithstanding the apparently good charac- 

 ters used to separate them, I do not feel sure of the distinctness of 

 armatulus and costicollis. Twenty-two examples of the latter have 

 been seen, and in these no external sexual marks are present. It 

 is barely possible of course that these are all females, and that the 

 length of the tempora is not to be depended upon. If they are dis- 

 tinct, as I believe it best for the present to assume, then it is certain 

 that they were confused by LeConte, and it matters little to which 

 the name costicollis is applied. 



Li. iiiontuiiiis sp. nov. — Differs from armatulus— its nearest ally — in little, 

 except the sexual characters mentioned in the table. The form is a little more 

 elongate, and the prothorax is less narrowed at the middle than in any specimens 

 of armatulus that I have examined. Length 2.2 mm. 



Hub. — Colorado (Leavenworth Valley — 10,000 ft.). 

 A single £ collected by Mr. Wickham. 



Li. costicollis Lee.— Nearly identical with liratus in every particular, ex- 

 cept that mentioned in the table, viz. : the carination of the. seventh interval of 

 the elytra. This is a little variable in degree, but is too obvious to be mistaken 

 in any one of the twenty-two specimens before me. No sexual characters are 

 discoverable in the material at hand. 



Hab.— Montana (Bear Paw Mt.) ; Colorado (Veta Pass); Utah 

 (Park City, Alta) ; British Columbia (North Bend); Washington 

 (Tenino) ; Oregon (Astoria); California (San Francisco). 



