90 Annals of the Carnegie Museum. 



156. Rhytidichrota peruviana Bruner. 



Rhytidichrota peruviana Bruner, Horae Soc. Ent. Rossicee, XXXIX, p. 487 (1910). 

 Two males from Las Juntas, Santa Cruz, Bolivia, belong here. 

 They were collected by J. Steinbach in December, 1913, at an eleva- 

 tion of 250 meters above sea-level. C. M. Ace. No. 5060. 



157. Rhytidichrota boliviana sp. nov. 



Related to Icevifrons and antennata of Stal, but lacking the shining 

 callosities on the pronotum and the basal abdominal segment, as 

 mentioned in connection with the descriptions of those species. Large 

 and robust. Inner, lower, and outer faces of the hind femora strongly 

 tinged with carmine. 



Head of moderate size, about as broad as the anterior margin of 

 the pronotum; the occiput strongly rounded, comparatively smooth; 

 the eyes fairly prominent, nearly twice as long as the anterior margin 

 of the cheeks below them, separated above by a narrow space, the 

 sides of which are strongly carinated, the carinse diverging anteriorly 

 on the basal portion of the fastigium of the vertex; this latter of 

 medium size, quadrate, and with the disc depressed and rugoso- 

 granulate; frontal costa somewhat prominent above between the 

 antennae, about twice the width of the vertex, plain above, becoming 

 sulcate towards the central ocellus and continuing to the base of the 

 clypeus. Antennae rather robust, but not at all ensiform, or sub- 

 ensiform, as in ensicornis and allies, about as long as the hind femora. 

 Pronotum with its surface shining, though coarsely and shallowly 

 punctulate, the anterior lobe a little more than twice the length of 

 the posterior, and with the sides parallel; the hind lobe with its 

 sides divergent posteriorly, the transverse sulci moderately strongly 

 impressed, the median carina present only on the hind lobe, very faint; 

 the front margin rounded, shallowly emarginate at its middle, the 

 hind margin straight. Dorsum of pro- and mesonotum and basal 

 abdominal segments rugoso-punctulate. Body entirely apterous. 

 Anterior and middle legs robust, the femora swollen; hind femora 

 long, and rather robust at their base, gently tapering apically, the 

 upper carina serrate basally, the lower carina strongly toothed on its 

 apical half; the hind tibiae heavy, their outer margin armed with 

 eight, the inner with nine spines. Cerci short, robust, a little tapering, 

 directed upwards, the cephalic margin produced into an inwardly 



