88 PROCEEDINGS OF THE NATIONAL MUSEUM vol. los 



broad, moderately long and pale, a shallow depression in middle, 

 coarsely and densely punctate, labrum short. Antennae long and 

 slender, with joints 3-11 subequal with 4th and 5th joints longest, 

 piceous except the two distal joints and these with a darker tip. 

 Prothorax approximately one-third wider than long with nearly 

 straight sides, only slightly tapering apically; a semicircular transverse 

 depression on disk, shining, impunctate, pale yellow with a large 

 median dark brown spot nearest anterior margin and extending to 

 below middle. Scutellum dark. Elytra widening slightly towards 

 apex, densely and coarsely punctate, with faint costae not reaching 

 either base or apex; piceous with a pale margin, wider at apex, and 

 a large, pale, roundish spot in middle of each elytron. Epipleura pale, 

 vanishing at apical curve. Body beneath with breast and abdomen 

 brown, the former with pale sides and the latter having tip of each 

 segment pale, lightly pubescent. Legs with the pale femora bearing 

 a dark streak on top, and hind femora dark at apex, tibiae and tarsi 

 dark; middle tibiae of male with a notch near apex; claws appendic- 

 ulate. Length 4.8 mm.; width 2 mm. 



Type: Male, USNM 63361, from Isiamas, Bolivia, W. M. Mann, 

 Mulford Biological Expedition, 1921-1922. 



Remarks: This is clearly closely related to /. sexplagiatum, although 

 with only one pale spot on each elytron, and a median dark spot 

 on the pronotum. 



Iceloceras riiatanae (Jacoby) 



Figure 5,d 



Neohrotica ruatanae Jacoby, Biologia Central!- Americana, Coleopt., vol. 6, Suppl. , 

 p. 335, 1892. 



About 6 mm. in length, elongate oblong oval, shining, the elytra 

 obsoletely punctate, prothorax with a wide transverse depression; 

 elytra with deep incurving intrahumeral sulcus extending nearly 

 a third of the way down; pale yellow, the antennae deepening in color 

 towards apex, elytra with a violaceous brown median marking, 

 beginning about scutellum and curving down to cover whole width 

 of elytra before apex, leaving the margin pale; middle tibiae of male 

 notched. 



Head with interocular space half width of head, shining, finely 

 punctate on occiput, frontal tubercles distinctly marked, a slight 

 median elevation in lower front, labrum wide; entirely pale except 

 the brown tips of mandibles. Antennae long and slender, the 2d 

 and 3d joints short and subequal, rest long, the joints gradually 

 becoming a little shorter near apex and deeper in color. Prothorax 

 somewhat wider than long with only slightly curved sides, not much 

 narrower anteriorly; a wide transverse depression across disk; surface 



