194 MEMOIRS ON THE COLEOPTERA 



longer, than the prothorax; abdomen parallel, with straight sides, much 

 narrower than the elytra, the four impressions rather feeble, the fifth 

 tergite (c?) with an elongate tubercle just behind the centre., the sixth 

 with the depression nearly as in the two preceding, except that the ar- 

 cuato-truncate apex is not defined by small lateral projections and the 

 lateral limits of the flat depressed area are not so abruptly defined. 

 Length 2.2 mm., width 0.48 mm. California (Hydesville, Valley of Eel 

 River, Humboldt Co.). 



To be known at once from either of the two preceding by the 

 finer sculpture and pubescence, coloration, narrower prothorax, 

 still longer elytra, more parallel tempora and by the male sexual 

 characters, there being no discal tubercle of the fifth tergite in the 

 male of those species. 



Homalota wickhami n. sp. Slender, depressed, dull, black, the elytra 

 and legs brown, the former feebly infumate basally, the abdomen pal- 

 lescent at apex; punctures small, feeble and confused, indistinct, evident 

 though shallow and narrowly parted along the middle on the head, fine, 

 asperulate and moderately close on the shining abdomen, becoming 

 very fine and sparse posterior to about the middle; pubescence rather 

 fine, short and inconspicuous; head large, fully as wide as the prothorax, 

 but little wider than long, the eyes very prominent, at their own length 

 from the base, the tempora much less prominent, parallel for a very 

 short distance, then oblique to the base; antennae black, piceous basally, 

 moderately long and not stout, the third joint scarcely shorter than the 

 second but more constricted basally, fourth nearly as long as wide, fifth 

 rather abruptly thicker, one-third, the tenth one-half, wider than long, sub- 

 equally wide, the last elongate-ogival, as long as the two preceding; pro- 

 thorax very slightly wider than long, widest anteriorly though indefinitely, 

 the sides evenly and very broadly rounded, more converging basally, 

 sinuate just before the obtusely prominent basal angles, the apex some- 

 what wider than the base, the surface very broadly and feebly impressed 

 along the middle throughout; elytra not quite so long as wide, with very 

 feebly diverging sides, at base a fourth wider, the suture two-fifths 

 longer, than the prothorax, the humeri well exposed at base; abdomen 

 parallel, with straight sides, long, much narrower than the elytra, the 

 four basal impressions distinct. Length 2.6 mm.; width 0.46 mm. 

 Iowa (Iowa City), Wickham. 



The female type represents a species allied to flexibilis but 

 smaller, notably more slender and with a relatively larger head and 

 narrower prothorax and abdomen. 



Homalota frigidula n. sp. Similar to the preceding in coloration and 

 sculpture, except that the elytra are not so definitely pale and the ab- 

 domen not pale at tip, the vestiture rather longer and more distinct; head 

 large though barely as wide as the prothorax, scarcely at all wider than 

 long, the eyes smaller and not so prominent, at fully one-half more than 



