12 PROCEEDINGS OF THE NATIONAL MUSEUM Vol.76 



than the ventral surface; pygidium without a projecting carina at 

 apex. Prosternum sparsely, finely punctate, somewhat rugose, and 

 sparsely clothed with short recumbent white hairs; prosternal lobe 

 broad, vaguely declivous, and broadly but not deeply, arcuately 

 emarginate in front; prosternal process broad, the sides parallel to 

 behind the coxal cavities, then arcuately narrowed to the apex, which 

 is rather acute. Tibiae slender, straight, and without a distinct 

 tooth on inner margin at apex. Posterior tarsi distinctly shorter than 

 tibiae, and the first joint as long as the following three joints united. 

 Tarsal claws similar on all feet, cleft near the middle, the inner tooth 

 broad and much shorter than outer one, and not turned inward. 



Length, 5.25 mm. ; width, 1.25 mm. 



Ti/pe locality. — San Jose, Costa Rica. 



Type.— Ca,t. No. 41608, U.S.N.M. 



Described from a single female collected on bushes at the type 

 locality. May 22, 1925, by Ferd. Nevermann. 



AGRILUS VmroiCEPHALUS. new species 



Male. — Form resembling ohsoletovittatus Fisher; head bright 

 green, becoming reddish brown on the occiput; pronotum blackish, 

 with distinct greenish blue and purplish reflections; elytra aeneous 

 on basal half of disk, becoming bluish black on apical half and 

 toward lateral margins, and ornamented with yellowish white pu- 

 bescent designs; beneath dark brown, with a more or less cupreous 

 reflection, more shining than above, and the legs greenish. 



Head with the front broad, slightly convex, narrower at top than 

 bottom, the lateral margins feebly arcuately expanded at middle, and 

 obliquely expanded at bottom, and without distinct depressions ; sur- 

 face glabrous, densely, finely granulose, sparsely, coarsely punctate, 

 and longitudinally rugose on the occiput; epistoma transverse be- 

 tween the antennae, and broadly arcuately emarginate in front; an- 

 tennae extending nearly to base of pronotum, serrate from the fifth 

 joint, and the outer joints longer than wide; eyes large, broadly 

 oblong, and about equally rounded above and beneath. 



Pronotum vaguely wider than long, slightly wider at apex than 

 base, and widest near apex; sides feebly arcuately narrowed from 

 apical angles to posterior angles, which are rectangular ; when viewed 

 from the side the marginal and submarginal carinae are strongly 

 sinuate, rather narrowly separated anteriorly, and connected to each 

 other near base; anterior margin strongly sinuate, the median lobe 

 strongly produced, and broadly rounded ; base arcuately emarginate 

 at middle of each elytron, the median lobe feebly produced, and 

 vaguely arcuately emarginate in front of scutellum; disk without 

 distinct median depressions, but with a broad, very shallow depres- 

 sion on each side along lateral margin, and with strongly elevated, 



