TACHYPORID^. 351 



joints elongate: ant. with 3 or 4 aquinal joints enlarged and forming a 

 club, 

 dxcvi. Gyroph^na Head nearly sessile, rhomboid : tho. scarcely larger, but 

 wider, than the head : body short, flattened ; capable of being rolled into a 

 ball : elytra transverse : anter. tarsi 4-, poster. 5-jointed, kinder with basal 

 joint elongate. 



dxcvii. Encephalus Head somewhat sessile, small : tho. broader than long : 

 body very broad ; capable of being rolled into a ball : abdomen strongly 

 margined : ant. short, thick at tip : anter. tarsi 4-, poster. 5-jointed, hinder 

 with basal joint longest. 



dxcviii. Aleochara Head sessile, deeply inserted : tho. convex, broad : elytra 

 transverse : body elongate, robust : abdomen strongly margined : legs pubes- 

 cent : tarsi 5-jointed, basal joint of hinder pair longest : ant. stout, robust, 

 4th to 10th joints of equal length, 11th obtuse. 



dxcix. Ceranota Head small, somewhat sessile: tho. convex, broad, rounded: 

 elytra transverse, very short : abdomen strongly margined ; of the 6* the 4 

 basal segments with a tubercle in the middle of the back : legs pubescent : 

 tarsi 5-jointed, basal joint longest : ant. slender, joints of nearly equal 

 length, 11th acute. 



dc. Oxypoda Head sessile, very deeply inserted into the tho., which is 

 broadest behind : body narrowed behind : elytra with a distinct notch at the 

 outer apical angle : abdomen strongly margined : legs pubescent : tarsi with 

 basal joint rather longer than the 2d : ant. rather long, thickened at 

 the tip. 



dci. Placusa Head somewhat sessile, transverse : tho. very short, the base 

 slightly waved, angles turned backwards : elytra nearly 4-drate : abdomen 

 rather short : legs slender : anter. tarsi 4-, poster. 5-jointed, hinder with 

 basal joint longest. 



dcii. Atemeles Head small, sessile : tho. short, transverse; lateral margins 

 angulated behind : body broad : abdomen margined, penult, joint with la- 

 teral processes and notched : legs slender : anter. tarsi 4-, poster. 5-jointed, 

 hinder with basal joint elongate : ant. with 2d and 3d joints small. 



(dciii. Lomechusa Head transverse, sessile : tho. flat, hinder angles acu- 

 minated : body broad : abdomen with penult, joint notched, and having 2 

 short styliform processes: legs slender: anter. tarsi 4-, poster. 5-jointed: 

 ant. fusiform.) 



dciv. Dinarda Head transverse, sessile : tho. with hinder angles produced 

 into a spine : body broad : abdomen with penult, joint simple : legs mo- 

 derate : anter. tarsi 4-, poster. 5-jointed: ant. with terminal joint elongate- 

 conic. 



dcv. Diglossa Head sessile : tho. somewhat rounded : ant. with 2d joint 

 very long : max. with 2 long lobes : labium with 2 long setaceous lacinia? 

 in the place of palpi. 



dcvi. Silusa Head sessile: tho. short, smaller than the elytra, the latter 

 transverse : abdomen somewhat linear : legs short ; anter. tarsi 4-, poster. 

 5-jointed, joints equal : labial palpi inarticulate, setaceous : mouth pro- 

 minent. 



(dcvii. Gymnusa Head sessile : tho. rather narrowed in front : legs short, 

 tarsi all 5-jointed, basal joint of posterior elongate : ant. filiform, straight ; 

 palpi short, terminal joint subulate: mouth rostrate.) 



dcviii. Myll^na Head sessile : tho. broad, narrowed in front, widened, and 

 somewhat angulated behind : abdomen conical : legs stoutish, short : anter. 

 tarsi 4-, poster. 5-jointed, basal joint of the latter slightly elongate, an- 

 terior all very short. 



h h 2 



