178 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Cholus cattlevarum, n. sp. 



Type: Cat. No. 20428, U. S. N. M. 



Reared from Cattleya spp. probably from Columbia, or Vene- 

 zuela, or northern Brazil. 



Robust, coarsely sculptured, black species, with irregular pattern of 

 dense white scales on elytra, pro-, meso-, and metasternum, meso- and 

 meta-pleurae and abdominal sternites; pronotum devoid of vestiture; 

 length, excluding rostum, 9 to 12 mm. ; width at humeri, 5 to 6 mm. 



Head without vestiture except for a few scattered fine white scales 

 beneath the eyes; occiput coarsely confluently punctate; rostum twice as 

 long and one-fourth as wide as diameter of head, coarsely rugosely punc- 

 tate basally on each side of the narrow smooth carina, the punctures 

 becoming finer and sparser towards apex which is two-fifths wider than at 

 base; eyes broadly oval, nearly twice as long as the narrowest width of the 

 rostum. Prothorax one-fourth wider than long, widest at basal third, 

 without vestiture above but with a broad H-shaped patch of dense white 

 scales before the coxae; upper surface and sides opaque, microscopically 

 alutaceous except on the polished summit of the coarse, concentrically 

 arranged, lunate rugosities, on the discal side of each of which is set a 

 single short stiff black hair. Front coxae separated by about two-thirds 

 the width of one coxa, and exposing a rather large pentagonal centro- 

 sternal piece with finely alutaceous sculpture between the tip of the pro- 

 sternal lobe and the pair of inflated postcoxal processes of the epimeron. 

 Scutellum small, elongate, prominent, and clothed with white scales. 

 Elytra one-fourth longer than wide and one-fifth wider than pronotum; 

 widest at humeri, the sides convergent and nearly straight to about apical 

 fourth, apices rounded; surface extremely coarsely sculptured with ten 

 series of irregularly impressed punctures, the intervals unevenly inflated; 

 color black with an irregular design in dense white scales, the nude areas 

 generally more prominent than the squamose areas; third interval more 

 strongy inflated in basal and median fourths, the sixth interval more 

 strongly inflated at post-median fourth. A small patch of white scales and 

 hairs intermixed, on the mesosternum and a much larger patch of white 

 scales on the metasternum. Second abdominal segment with a narrow 

 median and broad lateral squamose patches, third and fourth segments with 

 small lateral squamose spots. Tarsi and tibiae (except base) clothed 

 densely with pale hairs, basal half of middle and hind femora with sparse 

 pale hairs. All femora equally dentate; outer apical angle of tibiae not 

 unguiculate. Mesosternum not protuberant between the intermediate 

 coxae. 



In the accompanying plate (Plate XIII) the upper photographs 

 were made from the type and are enlarged to about five diameters. 

 The lower photos which are about twice natural size were received 



