FRED. C. BOWDITCH. 



15 



median sulcus nearly entire ; elytra with sutural and median lines 

 strong, emphasized by rather prominent tubercles or costiform ridges 

 at both ends and the median transverse connection, suture smooth ; 

 prosternum evenly narrowed to a sharp point ; length 3 mm. 



Type. — 9: Costa Rica (P. Biolley); five 9 specimens. 



Head finely punctate, antennae short with 2d joint stout, 

 round, 3d and 4th cylindrical, 5th very slightly dilated, 6-11 

 forming a compact club, thorax finely punctate, becoming 

 coarse and rugose at tip of hump, which is moderate, rounded, 

 well limited at base by the basal sulcus, an obtuse lateral 

 tubercle and the side of the hump obsoletely swollen, the 

 median sulcus is dilated at the apex and is nearly entire, the 

 usual lines of the elytra are without special feature except 

 as above stated, the form is rather elongate, square, very 

 lightly compressed at the sides, pygidium with fine median 

 carina. 



Very similar in general appearance to inco7ispicua Jac, 

 but much larger. By its antennae this form approximates 

 Exema. 



Chlamys liumeralis nov. sp. Entirely opaque orange-yellow 

 above and below, except that the mandibles, eyes, antenna joints 2-11, 

 a round dot on the humerus, the tarsi, the end of the tibiae and all 

 knees are black ; thorax with two small teeth behind ; elytra strongly 

 punctured with about four raised lines, the sutural entire and slightly 

 subtuberculate at the base, ; suture dentate ; prosternum long, gradu- 

 ally narrowed to middle, then nearly parallel to the obtuse end ; 

 length 4 mm. 



Type.— 9 ; Cachabe, low c. XII, 96 (Rosenberg). 

 Head is thickly punctate, obsoletely channelled, antennae 

 with 2d joint stout, obconic, 3d elongate triangular, some- 

 what dilated, remainder dilated, thorax thickly and evenly 

 punctate and with a rounded hump, which is faintly sulcate, 

 broadly so in front, but everywhere obsoletely and faint 

 (best seen from above sideways); the elytral punctures are 

 large and regularly placed in rows, the sutural and median 

 lines are both sharply cariniform at the base ; the former 

 attains the suture at about the middle and so continues 

 nearly to apex, the median is also entire and parallel to the 

 last and at the end is obsoletely joined to the sublateral, 



TRANS. AM. ENT. SOC. , XXXIX. 



