412 



THE CANADIAN ENTOMOLOGIST. 



surface irregiilaily riifescent, the legs black ; tarsal claws long, evenly 

 arcuate, with a distinct though rounded swelling internally at base. 

 Length, 2.4-3.0 mm.; width, 2.0-2.7 mm. Utah (St. George), Wickham. 



Resembles desertonim, but differs in its much shorter and more 

 broadly rounded form and relatively much narrower prothorax. Four 

 homogeneous specimens. 



In septenirionis, Ws. (-- Davisi, Leng), the size is large, the form 

 elongate-oval and the punctures rather coarse, deep and very conspicu- 

 ous ; there is only a distant relationship between this and desertorum and 

 ovoideus, and the latter are properly true species and not varieties, at any 

 rate as far as septentrionis is concerned ; in them the maxillary palpi have 

 the fourth joint much shorter and more securiform than in septentrionis 



among other differences. 



List of Exochonius. 



A 



Exochomus in sp. 



1. marginipennis, LeC. — S. At). 



prcetextatus, Muh. 



2. fasciatus, Csy. — S. Calif 



3. latiusculus, Csy. — S. Tex. 



ssp. deflectens, Csy. — Mo. 



4. Children!, Muls.— Tex., Mex. 



Gtiexi, Lee. 



5. Californicus, Csy. — N. Calif. 



6. subrotundus, Csy. — El Paso. 



B 

 Brumus, " Weise" (Leng). 



7. ?ethiops, Bland. — N. Mex , Col. 



8. Mormonicus, Csy. — Utah, Nev. 



9. Townsendi, Csy. — Mex, 



10. parvicoliis, Csy. — Utah. 



11. histrio. Fall. — S. Calif 



12. desertorum, Csy. — Nev. 

 ssp? ovoideus, Csy. — Nev.? 



13. orbiculatus, Leng. — Ariz. 



14. septentrionis, Ws. — N.-East N. 

 Am. 



Davisi, Leng. 



15. Hogei, Gorh. — Mex , N. Mex. 

 ssp. Nevadensis, Leng.— Nev. 



Brachyacantha^ Che v. 



The following species is allied to ursina : 



B. Uteella, n. sp. — Form elongate-oval, very convex, polished, 

 minutely, rather sparsely punctate, black ; female with yellow spots as in 

 ursina, and nearly as large, except that the two medial are relatively 

 more distant from the two basal, so that, instead of forming a square as in 

 ursina, they form a slightly elongate rectangle ; pale side margin of the 

 prothorax much less broadly dilated anteriorly. Length, 3.6 mm.; width, 

 2.3 mm. Utah (Milford), Wickham. 



