388 Trans. Acad. Sci. of St. Louis. 



coarsely punctured, the lateral edge obtuse, much less defined than in 

 X. picipennis: prothorax oblong with rounded angles, distinctly longer 

 than wide, slightly narrowed behind, the dorsal series 3-4 punctured, 

 the lateral series curved as usual; elytra rather finely and indistinctly 

 punctate, with a submedial series of fine but regular punctures; abdo- 

 men smooth, piceous, the hind margins of the segments paler, the ventral 

 segments more broadly margined with pale piceous. Length 5.6 mm. 



California (Sau Bernardino and Mojave Desert) dimidiatus Lee. 



Sublateral series 4-6 punctured; hind angles of the head obtuse but 



scarcely rounded 4 



4 — flead very coarsely, sparsely punctured, the basal angles very obtuse, 

 the base strongly arcuate throughout the width, the surface broadly 

 smooth along the middle as usual; body only moderately slender and 

 convex, polished, deep black almost throughout, the elytra and abdom- 

 inal tip pale, the former very gradaally infumale with blackish from 

 near the middle to the base; legs pale, the antennae dark testaceous; 

 bead behind the antennae just visibly longer than wide, the sides par- 

 allel and very feebly arcuate, the flattened line at the sides well defined, 

 in great part rather coarsely aad closely punctate; under surface 

 coarsely and sparsely punctured; prothorax a third longer than wide, 

 not quite as wide as the head, the sides moderately converging and 

 nearly straight, the angles not very broadly but evenly rounded; dorsal 

 punctures coarsely impressed, unevenly spaced; elytra about as long as 

 wide, the sides straight and feebly diverging from the base, about equal 

 in length to the prothorax and wider than the head, in large part im- 

 punctate dorsally but rather broadly and confusedly so toward the 

 suture, the isolated medial series composed of very small, widely 

 spaced punctures and another more oblique series external to this is 

 observable in apical half; abdomen very finely, sparsely punctulate, the 

 segments not obviously paler at their apices. Length 5.8 mm.; 



width 0.93 mm. California (Pasadena), — A. Fenyes infnmatas n. sp. 



Head very coarsely and unusually closely punctured toward the sides, the 

 base feebly arcuato-truncate, the basal angles only slightly more than 

 right and not at all rounded; body similar in form to the preceding 

 and almo.st similar in coloration, except that the elytra are much more 

 abruptly and deeply black in basal half and the legs darker testaceous; 

 head behind the antennae rather longer than wide, the sides parallel 

 and straight, the post-ocular line flat, coarsely and very closely'punc- 

 tured, the pare along its upper margin impunctate as usual; under sur- 

 face flat throughout, the punctures very coarse and spai'ser, unevenly 

 distributed, forming one or two longitudinal series near the sides and 

 Irregularly scattered near the sutural lines, which are relatively rather 

 fine; prothorax fully two-fifths longer than wide, equal in width to the 

 head, the sides feebly converging and nearly straight, the angles well 

 rounded; dorsal punctures rather coarsely impressed, very uneven in 

 size and spacing; elytra quadrate, distinctly shorter and wider than the 

 prothorax, the punctures small, rather feeble and sparse, disposed 

 nearly as in irt/?<ma(MS. Length 6.5 ram. : width 1.1mm. Arizona. 



bipartitos n. sp. 



