LeConte.] A:N^THRIBID^. 391 



as wide as long, not impressed or cariaate; head convex, punctures becom- 

 ing finer and obsolete on the occiput. Prothorax one-third wider than long, 

 rounded on the sides, narrowed in front, faintly impressed but not con- 

 stricted on the sid^s, nearly truncate in front and at base; densely and 

 strongly punctured with a narrow dorsal line, which is obsolete in some 

 specimens. Scutellum rounded behind, not depressed. Elytra wider than 

 the prothorax; basal margin rather acute, finely serrate; striae deeply im- 

 pressed, punctured; interspaces wider than the striae, scabrous with trans- 

 verse rugosities, becoming asperate on the sides towards the tip; the 

 interspaces become more convex on the declivity, and the third and 

 nintli unite near the tip, and then join the first so that the second is a little 

 shortened. Beneath coarsely and sparsely punctured and pubescent, and 

 less opaque; legs lighter brown. Length 3.6 mm. ; .14 inch. 



Anticosti Island, Gulf of St. Lawrence, W. Couper; British Colum- 

 bia and Vancouver Island, G. R. Crotch. No sexual difference observed. 



Family X. ANTHRIBID^E. 



Mentum large, deeply emarginate in front, closely connate, (except in the 

 group Hormiftci,') with the gular peduncle, which is broad and short; 

 buccal fissures consequently narrow, only partially exposing the base of the 

 maxillae; ligula large, corneous, narrowly emarginate at tip; palpi 3 jointed, 

 inserted at the sides of the lower face of the ligula, distant, slender, cylin- 

 drical, longer than in other Rhynchophora and flexible, as in normal Cole- 

 optera and in Khinomaeeridm; last joint elongated, narrower at the tip. 



Maxillae visible in the narrow buccal fissures, with two narrow lobes, 

 usuall}^ rounded and ciliate at tip; palpi slender, 4 jointed, with the last 

 joint longer and narrower at the tip. 



Mandibles flattened on the upper surface, curved, pointed or emarginate 

 at tip. 



Antennae inserted usually under the sides of the front, rarely upon the 

 front. They are 11 -jointed, slender and not geniculate; the first joint 

 is stouter, but scarcely longer than the second; joints 3-8 slender, pubes- 

 cent; 9-11 broader, more or less compressed.finely pubescent and sensitive. 

 The antennae of the r^ are sometimes much longer than the body. The 

 outer joints form a compact oval club in Hormiscus, 



Head prominent, not deflexed; beak broad, flat, sometimes so short as to 

 be indistinct; never cylindrical or slender, and never separated from the 

 front by a transverse impression. Eyes moderate in size, not very finely 

 gi"ftnulated, rounded, sometimes slightly emarginate in front. Labrum dis- 

 tinct, quadrate, fringed with hairs- Gular suture completely obliterated. 



Prothorax of varied form, usually trapezoidal and truncate in front; rarely 

 gomewhat rounded over the head ( Choragus); base trnncate, with a trans- 

 verse, eleva'ed line which is either antebasal (Tropiderini) or entirely 

 basal; this line is abruptly bent forwards at the sides, and forms a more or 

 less abbreviated side margin. 



