188 PROCEEDINGS OF THE NATIONAL MUSEUM vol. km 



This species can be separated from other Bolhocerosoma by the fol- 

 lowing characteristics: Sparse short erect yellow hairs scattered over 

 pronotum and elytra, elytral margins black for their entire length, 

 elongate postmedian elytral spot well separated from both black 

 sutural stripe and margin, and punctures of elytral striae very deep, 

 sharply delimited, with their edges rimmed with black. 



It gives me a great deal of pleasure to name this colorful species in 

 honor of Dr. P. O. Ritcher, who has given me invaluable aid, both in 

 the field and in the numerous problems encountered in the prepara- 

 tion of this paper. 



Bolhocerosoma cartwrighti, new species 



Holotype: Male, length 7.5 mm., greatest width 4.6 mm. 



Dorsum red-brown marked with black as follows: Eyes, eye canthi, 

 tubercles, vertex, horn, most of clypeus, apical pronotal margin be- 

 tween lateral carinae, inner portions of lateral carinas, lateral portions 

 of transverse carina, lower portion of lateral limiting grooves, lateral 

 margins of the pronotum, band on pronotal base extending sharply 

 forward at midline (dentiform point) and extending laterally no 

 farther than elytral margin, scutellum, extreme base of elytra almost 

 to humeri, posterior half to two-thirds of elytral margin, sutural in- 

 tervals and postmedian oblong spot extending from third to ninth 

 striae. The elytral spot is quite similar to that of B. confusum. 

 Entire undersurface and legs very dark brown to black. Vertex 

 coarsely, somewhat sparsely punctured, punctures becoming coarser 

 and more numerous on the clypeus. Pronotum heavily, coarsely 

 punctate medially, lateral portion more finely, closely punctate, more 

 so anteriorly. Minute secondary punctures evenly distributed over 

 pronotum. Lower two-thirds of pronotal declivity coarsely punc- 

 tured. Scutellum is unusual by having 15 to 20 coarse, irregularly 

 placed punctures and a few minute secondary punctures. Second 

 elytral stria obsolete, represented by a vague depression without 

 punctures, fifth and eighth striae represented by a few small punc- 

 txu"es. Numerous long erect yellow setae are present near most of 

 the coarse punctures on the prothorax, scutellum, elytra, elytral 

 margins, and epipleura. Elytral punctures are well defined and 

 usually separated by slightly more than their own diameter, but this 

 varies. There is an accessory row of moderately coarse, seta-bearing 

 punctures running the length of the elytra next to the suture. In no 

 other species was this noticeable row of accessory punctures present. 

 A few similar punctures are present in a few specimens of B. pusillum, 

 but a uniform row was not noted in any of the specimens examined. 

 Fore tibia armed with seven teeth. Mesosternal prominence in front 

 of middle coxae small, barely elevated above metasternal plane. 

 Hair of underside long and moderately sparse. 



