260 MEMOIRS ON THE COLEOPTERA 



by less than three times their width, their inner margins much more 

 converging than in either of the preceding; antennae nearly as in 

 propinqua, except that they are still somewhat more slender; 

 prothorax similar; last dorsal segment nearly similar in outline, 

 but with the fine punctures twice as sparse. Length (cf 9 ) 9.5- 

 n.o mm.; width 2.7-3.4 mm. Colorado. Levette collection. 



minuscula n. sp. 



7 Form narrow; size small; color black, the entire abdomen, except at 

 base, and the legs, as well as the antennal prominences as usual, 

 pale; elytra pale, with a small marginal spot behind the humeri, a 

 transverse entire fascia before the middle and another near apical 

 fourth, black; sculpture and vestiture nearly as in the other species; 

 antennae notably shorter, dusky testaceous, the outer joints partially 

 infuscate. Length (c?) 9-7 mm.; width 2.9 mm. California. 



soror Lee. 



A number of Walker's species will have to be reinstated, having 

 been too hastily reduced to synonymy; another very conspicuous 

 instance occurs in the genus Acanthocinus of our present lists, as will 

 appear. 



Cyphonotida n. gen. 



The type of this genus is Ophistomis ventralis Horn, described 

 (Proc. Cal. Acad. Sci., ser. 2, IV, p. 401) from Lower California but 

 apparently the same as the species that I sent to Mr. Bates many 

 years ago for remark. The statements of that author (Ann. N. Y. 

 Acad., VI, p. 41) w r ould seem to show that it is closely allied to 

 IcBvicollis Bates, though possibly different. The antennae have no 

 trace of poriferous sensitive areas and the genus is evidently a 

 member of the Lepturid and not of the Ophistomid series. It was 

 surmised by Bates that it should be separated generically from 

 Ophistomis, but he gave scarcely any reason beyond the very convex 

 and anteriorly declivous pronotum. 



Xestoleptura n. gen. 



A genus largely developed on the Pacific coast and almost con- 

 fined to those regions, the only Atlantic coast species known to me, 

 octonotata, being of peculiar habitus, due to its much narrower and 

 more elongate form and different though analogous ornamentation. 

 The crassipes group has given rise to much confusion, owing to the 

 numerous more or less local developments as in Omus, Brennus and 

 other Pacific coast groups. LeConte having described crassipes 

 from the male and crassicornis from the female, could readily be 



