Coleopterological Notices, VI I. 293 



O. elongatllS. — Elongate and but feebly ventricose, strongly convex, 

 shining and deep black. ITead slightly narrower than the prothorax, rather 

 feebly rugose, the rugosities large; front not at all punctate toward the mid- 

 dle, the sublateral impressions rather strong and oblique; labrum strongly 

 bisinuate, but with the median lobe only moderately advanced, very broadly 

 arcuate and unevenly undulated, the punctures coarse and deep; antennse 

 moderate in thickness, attenuate toward tip, rather more than J^ as long as 

 the body. Prothorax somewhat more than }^ wider than long, the sides mod- 

 erately strongly convergent from apex to base and broadly, almost evenly arcu- 

 ate throughout, the lateral marginal line attaining the basal bead, the latter ob- 

 literated at the middle; ante-basal and post-api'al transverse lines distinct; 

 disk rather strongly convex, feebly vertniculato-rugose, the median line fine. 

 Elytra evenly elongate-elliptical, widest at the middle, % wider than the pro- 

 thorax and obviously more than 2% times as long; sides evenly arcuate; re- 

 flexed margins fine, rather broader toward base; surface strongly convex, 

 moderately coarsely and deeply and rather sparsely punctate, the foveolse small 

 but quite distinct. Length (J 16.5-17.5, 9 16.5 mm.; width $ 5.6-5.9, 

 5 6.2 mm. 



California (near San Francisco). Mr. Dunn. 



The description is drawn from the male, the female being more 

 ventricose as usual, with the elytra much more shouldered at base 

 and apparently more sti'ongly punctured. This species diifers 

 from lecontei in having the elytra evenly elliptical and widest at 

 the middle, and, from ambiguus, with which it is apparently most 

 closely allied, it seems to differ in its less stout antennse, less promi- 

 nent basal angles of the prothorax and more rounded sides of the 

 latter. Ambiguus is described in an entireh' insufficient manner, 

 the few diagnostic characters given being purel}' comparative. 



DROmOCHORUS Guer. 



This genus, which was considered a connecting bond between 

 theMantichorini andCicindelini by Lacordaire, differs from Cicin- 

 dela, not only quite radicallj^ in facies, but in the vesti- 

 ture of the legs and antennse, the legs and tarsi being clothed 

 throughout with fine decumbent hairs and the second and third 

 joints of the antennse having numerous fine subdecumbent hairs 

 in addition to the setse, which pubescence is altogether lacking in 

 Cicindela. In general the structural characters are similar to 

 those of Cicindela, but the tibial spurs are much shorter and 

 the bod}^ is wingless with rounded humeri. In all the species 

 known to me the labrum is black with a rounded pale spot at the 

 middle ; they may be identified as follows from the males : — 



