266 AMERICAN COLEOPTERA. 



vestitiire. Like Elleschus the second ventral suture is evidently 

 bent backward close to the lateral margin, and nearly as much so as 

 ill Proetoms decipiens, which because of this character is placed in 

 tiie Tychiini. It will be seen from this that it is impossible to 

 siiarply separate the Anthrononiini and Tychiini by this means. 



The genera Elleschus, Hypoleschus and Proctorns forming in this 

 respect a perfect transition from one tribe to the other. 



Hypoleschus atrattis n. sp.— Black, tarsi and anteniife paler, moder- 

 ately shining, sparsely clothed with fine cinereous appressed pubescence. Beak 

 rather slender, cylindrical, slightly longer than the head and prothorax, closely 

 finely punctate, the punctures more or less linear in form, especially above, 

 antennae inserted two-fifths from the apex, scape rufous, funicle and club becom- 

 ing gradually piceous; first and second funicular joints elongate, first stouter and 

 slightly longer than the second, the latter as long as the third and fourth 

 together; 3-7 transverse, increasing in width, the seventh fully twice as wide as 

 long, club broadly oval, pointed, as long as the four preceding joints. Prothorax 

 nearly as long as wide, sides straight and parallel in basal three-fourths, then 

 rounding in to the rather feeble apical constriction; disk evenly convex, and 

 clo.sely not very finely punctate. Elytra fully one-half wider than the prothorax, 

 base truncate and broadly feebly emarginate, sides parallel and very feebly arcu- 

 ate for two-thirds their length, thence narrowed and conjointly rounded ; striae 

 lightly impressed, closely punctate; interspaces nearly flat and much wider than 

 the strise, finely sparsely punctulate. Beneath finely punctate and sparsely pu- 

 bescent. Length 2.25 mm. ; width 1 mm. 



Beulah (CockereJl and Skinner) ; four examples. 



In each of the four specimens the abdomen is broadly concave at 

 base, perhaps indicating that all are males. The pygidium is deeply 

 longitudinally grooved in the same manner as in Phyllotrox, also a 

 male character. 



Olidoceplialiis rhois n. sp.— A little stouter than myrmex, the form 

 very nearly as in dichrons ; black, polished, abundantly clothed with fine erect 

 black hairs, intermingled with suberect, more or less recurved, white hairs, 

 which are more numerous toward the sides and apex of the elytra. Beak with 

 coarsely punctiired superior and lateral grooves, the median line smooth, becom- 

 ing wider and with a few fine punctures near the apex ; front and head coarsely 

 densely punctured, without well defined iuterocular impre.ssions. Eyes separated 

 by fully three-fourths their own width. Antennae blackish, second funicular 

 joint a little longer than the third and quite three-fourths as long as the first; 

 club less than twice as long as wide. Prothorax elongate oval, base slightly nar- 

 rower than the apex, sides moderately arcuate, a feeble sinuation before the 

 apex; surface coarsely densely punctate, a narrow incomplete smooth median 

 line. Elytra less than twice as wide as the prothorax and not quite twice as long 

 as wide, wider behind, striae not or but feebly impressed, the punctures close set 

 but not large, interspaces wide, flat or nearly so with numerous confused setifer- 

 ous punctures. Under surface with plentiful short fine erect whitish hairs, the 



