140 AMERICAN COLEOPTERA. 



Lower California Sanguinicollis, by the bright red prothorax. 

 Sanguinicollis is a smaller species (5 mm.), with prothorax 

 more narrowly rounded apically, and with the third antennal 

 joint but little shorter than the fourth ( cf 1 ) . 



MALACHID^. 

 COLLOPS Er. 

 C. crusoe n. sp. 



Male. Head rufous, a small spot in front of the eye and the under 

 surface blackish ; prothorax rufous, elytra yellow, each with an elon- 

 gate dark blue basal spot and a much larger one occupying the greater 

 portion of the posterior half, the entire limb and suture pale ; antennae 

 rufous ; legs black, front and middle trochanters, the anterior tibiae and 

 all the tarsi rufous, middle tibia? dusky; metasternum and abdomen in 

 great part black, the apical segment of the latter largely pale. Upper 

 surface dull throughout, with very short sparse black erect hairs, and 

 still shorter very inconspicuous pale hairs. Basal joint of antennae 

 sinuate posteriorly, second a little longer than wide, following joints 

 feebly serrate and a little wider than long, the outer ones as long as 

 wide. Head finely closely punctate. Prothorax two-fifths wider than 

 long, sides strongly rounded posteriorly, becoming nearly straight 

 and feebly convergent in front, surface densely but vaguely, rather 

 coarsely, subrugosely punctate. Elytra coarsely, densely punctate, 

 narrow at base, broader behind, wings rudimentary. 



Female. Differs from the male only in its larger size, unmodified 

 second antennal joint, head black at sides, prothorax more rounded 

 in front, and all the tibiae pale. Length (head deflexed) 3^^ mm. 



Described from a single pair given me by Mr. V. W. Owen 

 of Los Angeles. They with others were taken on the little 

 Island of San Nicholas off the coast of Southern California. 



This is a very pretty species with its pale rufous head and 

 prothorax, and bright yellow elytra maculate with deep blue. 

 It is doubtless a truly insular form, and with the exception 

 of cribrostis differs from all our other species in being apter- 

 ous. It agrees with cribrosus, pulchelhis and argutus in the 

 posteriorly sinuate basal joint of the antennae. 



C. flaviciuctus n. sp. 



Above clothed rather conspicuously with short recurved and sparser 

 long erect pale hairs. Head pale yellowish testaceous in front, black 

 back of a line joining the middle of the eyes ; prothorax black with 

 very narrow pale side margins ; elytra blue-black, narrowly margined 

 throughout with pale yellow. Antennas pale yellow, the outer angles 



