NORTH OF MEXICO. 



323 



Thorax sparsely and not coarsely punctured, distinctly margined; not 

 distant from elytra; legs black; abdominal segments on same 

 plane. 

 Elytral margin attaining apex of elytra. 



Broadly oval; males distinctly caudate. contusum. 



Elongate oval; elytra gradually narrowed. elongatum. 



Elytral margin not attaining the apex. 



Males not caudate. plan u m . 



Thorax very coarsely punctured; elytra broadly oval, sub-rugose; 



legs ferruginous brown; third abdominal segment oblique. depressum. 



TRIBE XVIII — SCAURINI. 



Body elongate, apterous ; head prolonged behind the eyes, which are narrow, trans- 

 verse, reniform and moderately coarsely granulate ; front prolonged, concealing the labrum, 

 sides dilated and slightly renexed ; mentum small, distinctly trilobed, lateral lobes in- 

 dexed, ligula prominent, gular peduncle distinct ; palpi with the last joint dilated; gular 

 peduncle distinct; antennae eleven-jointed, outer joints rounded, transverse. Elytra feebly 

 embracing the abdomen, with narrow epipleurse attaining the tip; mesosternum short, 

 side pieces narrow, epimera distinct. Anterior coxrc rounded, middle coxte with distinct 

 trochantin; hind coxa: distant; scutellum broad, not penetrating between the elytra. 

 Tarsi coarsely spinous beneath. 



'Hie scutellum occupies almost entirely the mesonotum. In addition to the very minute 

 punctures, almost entirely hidden in fine pubescence, the antennae have the outer joints 

 coarsely punctured. This same peculiarity is less distinctly reproduced among the Tenc- 

 brionini, between which tribe and Blaptini the Scaurini naturally occupy an intermediate 

 position. 



The tribe is divisible into two groups. 



Third joint of antennse long; joints four to eleven gradually diminishing, terminal joint aente. Intercoxal pro- 

 cess of first abdominal segment broader than long, the .segment equal to the second and third; third and fourth seg- 

 ments very short and deeply emarginate. Femora of male tool lied, strongly clavaie. cebdnofi. 



Thirdjoint of antennse riot elongate; joints four to eleven sub-equal; last joint rounded; intercoxal process longer 

 limn broad; first segment of abdomen not longer than the two succeeding; third and fourth segments feebly enuu- 

 ginate: femora never suddenly clavaie and always mutic. EULABES. 



GROUT I — EULABES. 



EULABIS, h'xeh. 

 Bulabis, Esoli., Zool. All. HI, p. 14. 

 Epantius, Lee., Ann. Lye. V., p. 144. 

 Apsena, Lee., Class. Col. N. A.,_p. 228. 



'fliis genus alone constitutes the group, and may be readily recognized by the charac- 



