432 Trans. Acad. Set. of St. Louis. 



prothorax pale, the antennae darker, rufous, the elytra plceo -rufous 

 to piceous-black throughout; head rather wider than In schaumi and 



' moi'e broadly rounded at base, elongate as usual; prothorax very 

 large, only about a fifth longer than wide, fully one-half wider than 

 the head, with all the angles broadly rounded as usual and with the 

 feebly arcuate sides converging anteriorly between the basal and 

 apical angles; discal punctures as usual; elytra well developed, 

 slightly wider than the prothorax and from four-fifths to five-sixths 

 as long, the sides moderately diverging from the basal angles; 

 abdomen fully as wide as the elytra, tapering toward tip as usual. 

 Male with sexnal characters nearly as In the preceding, the fifth ventral 

 very feebly sinuate in median third, the sixth with a rather strong api- 

 cal sinus, occupying almost half the width and about five times as wide 

 as deep but rather larger, deeper and more angular or less broadly 

 rounded at the bottom than In schaumi, the antennae similar to those of 

 the preceding species. Length 3.7 mm.; width 0.72 mm. New York 

 (Long Island) thoracicus n. sp. 



6 — Body less fusiform than in thoracicus and much stouter than in schaumi, 

 the head and elytra rufo-piceous, the prothorax paler, the abdomen 

 blackish with the apex pale ; legs and three basal joints of the antennae 

 pale testaceous, the remainder of the latter blackish; head elongate, 

 relatively larger than in schaumi, arcuato -truncate at base with the 

 sides parallel, the basal angles and antennae almost similar, the eyes 

 notably larger and equally prominent; prothorax much narrower and 

 more elongate, with less converging sides than in the female of schaumi 

 but otherwise similar, scarcely more than a third wider than the head; 

 elytra well developed, scarcely visibly shorter than wide, but little 

 shorter than the prothorax and nearly a third wider, the sides diverg- 

 ing nearly in the direction of those of the prothorax as usual, the 

 humeri more laterally exposed at base than in schaumi; abdomen nearly 

 similar to that of the three preceding species, at base fully as wide as 

 the elytra, tapering posteriorly, the tip narrow. Female with the fifth 

 ventral evenly and rectilinearly truncate, the sixth more elongate and 

 tapering than in the male as usual, the apex broadly, feebly and evenly 

 arcuate. Length 3.8 mm.; width 0.68 mm. Texas (Austin). 



paliidiceps n. sp. 



Brevipennis is very closely allied to schaumi tind inhabits 

 almost identically the same geographical regions ; it may 

 therefore prove to be nothing more than a subspecies or 

 dimorphic stage. It can only be said at present that there is 

 no trouble whatever in separating the two forms, brevipennis 

 having noticeably shorter elytra in both sexes and differing 

 further in its slightly smaller size and still more slender out- 

 line. Thoracicus is distinct in a number of striking features 

 of form, structure and coloration, and it is doubtless a fully 

 differentiated species ; the elytra, when black, do not have 



