AMERICAN COLEOPTERA. 49 



KAL.OBIUS, n. g. [Oxytclini.) 

 Body elongate depressed, opaque; head large, prolonged behind the 

 eyes, suddenly and moderately constricted at base ; mandibles slender, 

 curved, acute, armed with a large acute tooth ; labrum not emargin- 

 ate; maxillary palpi very slender, last joint more than twice as long 

 as the preceding; antennae not geniculated, 11-jointed, 1st and 2d 

 joints thicker, the 1st pyriform, the 2d globose; 3d one-half longer 

 than the 4th, very slender, 4 — 6 equal in length, slender, 7 — 10 tri- 

 angular, gradually slightly wider, 11th oval, somewhat obtusely 

 pointed, not as large as the 10th; eyes small. Prothorax with nar- 

 row apex, very suddenly and strongly dilated on the sides, acutely 

 angulated and subspinose, then rapidly narrowed with a concave out- 

 line, base broadly rounded, not wider than the tip ; disc with two 

 faint dorsal grooves, a broad anterior impression and one on each side, 

 side margins distinctly reflexed ; elytra quadrate, emarginate at base 

 humeri rounded, tip squarely truncate, sides distinctly margined, 

 with traces of longitudinal lines, abdomen broadly margined at the 

 sides, gradually narrowed and pointed behind, less than twice as long, 

 as the elytra; anal appendages short, with a short terminal bristle. 

 ]jegs slender, tarsi rather short, 5-jointed, joints 1 — 4 gradually a 

 little shorter, 5th longer than the two preceding united. 



Z. spiuicollis. — Depressed, dull black without lustre, densely conflu- 

 ently punctured ; elytra with faint traces of longitudinal elevated lines; outer 

 Joints of antennae, palpi and tarsi brownish. Length 5.6 mm. 



Vancouver Island ; in moss exposed to dripping water. The body 

 is entirely without lustre, except on the abdomen, which is slightly 

 shining and less densely punctured. I have not dissected this insect, 

 80 that the description of the mandibles indicates only what is seen 

 beyond the labrum. It belongs to the group Co^roj^liili of the 

 Ox^telini. 



TRICHONYX Chaudoir. 

 T. striatns. — Chestnut-brown, shining; head with the usual deep angu- 

 lated impression, and two large fovese between the eyes; prothorax with a fine 

 dorsal groove dilated into a fovea near the tip, which it does not reach, 

 crossed near the base by a deep transverse groove, which is dilated each side 

 near the hind angle; sides much rounded in front, narrow behind the middle; 

 elytra wider than the prothorax, not convex, sparsely punctured, with a very 

 deep sub-sutural stria, two approximate discoidal strise from base for three- 

 quarters the length, and a short groove from the humerus; humeral plica ele- 

 vated; abdomen smooth, narrowly margined. Length .08 inch; 2 mm. 



Vancouver Island. The antennae are stout, scarcely reaching the 



TRANS. AMER. ENT. SOC. (7) MARCH, 1874. 



