222 Dr. Guy A. K. Marshall on 



slightly flattened in front, with a few shallow punctures, the lateral 

 impressions very small and faint or even obsolete. Prothorax about 

 as long as broad, parallel-sided from the base to beyond the middle, 

 then rather sharply narrowed and with a shallow subapical con- 

 striction; the base subtruncate, the gular margin rather deeply 

 sinuate; the dorsum with a very broad, comparatively even, deep 

 suboblong median impression, and on each side a much narrower 

 curved one extending from the subapical constriction to a little 

 behind the middle, the anterior part being the broadest ; the inter- 

 vening ridges of irregular oiitline, smooth, and Anth a few shallow 

 punctures. ScuteUnm a little broader than long, ovate, bare. 

 Elytra elongate, parallel-sided from the shoulders to beyond the 

 middle in both sexes, scarcely broader in the P, but the apical area 

 more produced and less obtusely rounded than in the (J ; the dorsal 

 outline almost flat from the base to the top of the declivity, the 

 latter with a slojic of 60'' ; the deep rounded foveae in fairly i-egular 

 rows and becoming much shallower behind, with a tendency to 

 become partly confluent transversely in twos or threes ; the intervals 

 quite indefinite and none of them elevated; the scales very small 

 and circular, and no apparent setae except a few at the apex. 

 Length, 15-17-5 mm. ; breadth, 5-25-6 mm. 



Colombia : Bogota. 



Described from three specimens. 



A more parallel-sided insect than X. viridilimbata Bovie, 

 and diftering markedly in its deeply pitted elytra and the 

 absence of definite carinae ; the rostrum is much more 

 dilated at the apex; the prothorax is more abruptly 

 narrowed in front, the median impression is broader and 

 the lateral ones much deeper. 



Xestogaster squalida, sp. n. (Plate III, fig. 1.) 



$. Integument black, the elytra alone fairly dense covered with 

 grey scaling, for the most part concealed by an earth-brown 

 indumentum ; the rest of the body and legs devoid of scaling. 



Head very shiny, with minute close shallow punctures and about 

 a dozen larger ones containing fine recumbent setae ; the frontal 

 fovea deep. Rostrum longer than its basal width, parallel- sided in 

 its basal half, widened at the apex, and with a few scattered dorsal 

 l^unctures ; the interantennal area very deeply and evenly excavated ; 

 the dorsum convex at the base, with a deep triangular median 

 impression in front, and a shallow longitudinal one on each side. 

 Prothorax as long as broad, widest at the base and gradually narrowed 

 in front, with a distinct subapical constriction; the base gently 



