1 24 NECROPHAGA. MYfETOPHAGIDJE. 



the 3d ; club 3-jointed : body elongate, ovate, rather flattened : tho. 



slightly elongate, with the sides entire, the disc without any rasied lines : 



tarsi 5-jointed. 

 clxvi. Mycet^ea Ant. 1 1 -jointed, basal joint large, 2d slender, longer than 



the 3d ; club 3-jointed : body ovate, convex, pilose : tho. with the sides 



entire, the disc with 2 raised marginal lines : tarsi 5-jointed, the 4th joint 



minute ; anter. in $ with an appendage at the base, 

 (clxvii. Holoparamecus Ant. 10-jointed, basal joint subglobose, 2 next 



long; club 2-articulate : body oblong, depressed : tho. obcordate : elytra 



elliptical: tarsi 3-jointed?) 

 clxviii. Silvanus Ant. 1 1 -jointed, 2d joint not longer than Sd ; club 3- 



jointed : palpi filiform : tho. rather long ; more or less denticulate on the 



sides : body elongate, narrow, flat : tarsi 4-jointed. 

 clxix. Latridius Ant. 11-jointed, 2d joint longer than 3d ; club 3-articu- 



late : palpi filiform : tho. narrow, margined, broadest in front ; flat : body 



elongate, flattish : elytra rather convex : tarsi 4-jointed. 

 clxx. Corticaria Ant. 11-jointed, 2d joint longer than 3d ; club 3-articu- 



late : palpi filiform : tho. rather heart-shaped, not margined, convex : 



body oblong, convex : elytra broad, entire : tarsi 4-jointed. 

 clxxi. Paramecosoma Ant. 11-jointed, 2d joint ovate, shorter than 3d; 



club 3 -articulate : tho. transverse, 4-drate, denticulate on the sides : body 



elongate, ovate, slightly depressed : tarsi 5-jointed. 

 clxxii. PsAMMiECHCs Ant. 11-jointed, 2d joint not longer than 3d; club 



3-articulate : palpi large, terminal joint securiform : tho. with its margin 



notched in front : tarsi 4-jointed, basal joints bilobed. 

 clxxiii. Phloiophilus Ant. 11-jointed, 2 basal joints large, somewhat 



globose : max. palpi with terminal joint thick, conical : tho. with margins 



entire : body oblong, ovate, very convex : tarsi 5-jointed, entire, 

 clxxiv. Byturus Ant. 11-jointed, gradually thickened to apex; club 3- 



articulate : palpi filiform : tho. somewhat trapeziform : body oblong-ovate, 



convex, tomentose : tarsi 5-jointed, 3d joint bifid, 

 clxxv. Triphyllus Ant. 11-jointed, basal joint thickened, 2d slender, 



shorter than 3d ; club 3-articulate : tho. with margins entire, without a 



raised lateral line : body oblong, ovate, slightly convex : tarsi 5-jointed, 



simple, 

 clxxvi. Biphyelus Ant. 11-jointed, 2d joint obconic, short; club 2-jointed : 



tho. with the margins entire ; with a raised line on each side, disc convex : 



body ovate, rather convex, pilose : tarsi 5-jointed, simple, 

 clxxvii. Typh^a Ant. 11-jointed, basal joint large, 2d slender, as long as 



the 3d, all longish ; club 3-jointed : palpi short, rather filiform : tho. with 



margins entire : body oblong-ovate, flattish, pubescent : tarsi 5-jointed, 



heteromerous in J • 

 clxxviii. Mycetophagus Ant. 1 1 -jointed, rather slender, gradually increas- 

 ing in size, and terminating in a somewhat indistinct, elongate, 5-articu- 



late club : tho. with margins entire : body ovate, slightly convex : tarsi 5- 



jointed, simple ; anter. in $ 3-jointed only, 

 clxxix. Tetratoma Ant. 11-jointed; club distinctly 4 articulate : mand. 



bifid at tip : tho. transverse, convex, rounded : body oblong, convex : tarsi 



heteromerous. 



163 Trichoptervx Kirby. 



993 atomaria De Geer. iv. 208. pi. 8. f. 16-20. — Ste. M. iii. 60. — 

 Brownish-black ; delicately pubescent, and finely punctured ; head black, 

 acute in front ; thorax convex, the sides rounded ; elytra with the tip 

 Obtuse ; somewhat obliquely truncate ; body pitchy-black ; legs and 



