NORTB HI' MEXICO. 323 



Thorax sparselj and not coarsely punctured, distinctly margined; nol 

 distant from elytra ; Legs black; abdominal segments on same 

 plane. 

 Elytral margin attaining apex of elytra. 



Broadly oval; males distinctly caud contusum. 



Elongate oval; elytra gradually narrowed. elongatum". 



Elytral margin nol attaining the apex. 



Males not caudate. planu in. 



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



legs ferruginous brown ; third abdominal segment oblique. depressum. 



TRIBE Will — SCAURINI. 



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

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

 •-ides dilated and slightly reflexed; mentum small, distinctly trilobed, lateral lobes in- 

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



mcle distinct ; antenna? eleven-jointed, enter joints rounded, transverse. Ely tra feebly 

 embracing the abdomen, Avith narrow epipleura? attaining the tip; mesosternum short, 

 side pieces narrow, epimera distinct. Anterior coxa? rounded, middle coxa? with distinct 

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

 Tarsi coarsely spinous beneath. 



The scutellum occupies almost entirelj the mesonotum. In addition to the very minute 

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

 coarseh punctured. Tins same peculiarity is less distinctly reproduced among the Tene- 

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

 position. 



The tribe is divisible into two groups. 



Third joinl of antennae long; joints four to eleven gradually diminishing, terminal joint acute. Iutercoxal pro- 

 of first :i'"l 'in!! ill segment broader than long, the * rod and third; third and fourth 



meuts verj short and deeplj emarginate. Fe > of male toothed, stronglj clavate. resopi. 



Third joinl ofa ■; elongate; joints four t" eleven sub-equal; List joinl rounded; intcrcoxal process longer 



than broad; lirsl segment of abdomen nol longer thau the t ■ third and fourth segments feeblj emar- 



: femora never suddenly clavate and always mutic. eui > 



f.Kul p i — EULABES. 



El LABIS, I 

 Eulabis, Esch., Zool. Atl. III. p. II. 



. Ann. I.y. . V.. p. 1 I 1. 



Apsena, Lee, Class. Col. N. A., p 



This genus alone constitutes the group, and maj be readilj recognized by the charac- 



