330 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



Described from five specimens (one type). The type and one 

 paratype were collected at the type locality July 10, 1935, and Jan- 

 uary 8, 1938, by Brother Gines; one paratype was collected at Rio 

 Magdalena, Colombia, during January or February, boring in a 

 telephone pole, by F. Luis Gallego; and the allotype and one para- 

 type were collected in British Honduras, during June 1911, by 

 N. K. Bigelow. 



This species resembles Polycesta perlucida Kerremans, but it differs 

 from that species in being larger and broadly elongate, in having 

 the head flat in front without a median carina, the pronotum more 

 strongly expanded at the basal third and the surface more coarsely 

 and deeply punctured, and the elytra uniformly reddish brown with 

 distinct prescutellar costae. 



Genus TYNDARIS Thomson 



TYNDAKIS DEPRESSICOLLIS, new species 



Elongate, rather robust, subcylindrical, rather strongly shining, 

 brownish black, with distinct purplish, greenish, bluish, and coj)- 

 pery reflections in different lights, and each elytron ornamented with 

 yellow markings as follows: A round and an elongate spot at base, 

 a round spot at humeral angle, a large spot in front of middle along 

 sutural margin, sometimes joined to a narrow, arcuate vitta extend- 

 ing backward from lateral margin at basal fourth to middle of disk 

 behind middle, and a zigzag fascia at apical third, joined at middle 

 to a narrow, arcuate vitta extending backward to near apex and 

 sutural margin. 



Head flat in front, longitudinally carinate on vertex and occiput, 

 without a median depression, coarsely, deeply, rather densely punc- 

 tate on front, more shallowly, confluently punctate on occiput, sparse- 

 ly clothed with moderately long, recumbent, whitish hairs; intervals 

 smooth; epistoma deeply, angularly emarginate in front; antenna 

 serrate beginning with sixth segment. 



Pronotum strongly convex, slightly gibbose toward base, slightly 

 wider than long, slightly narrower at apex than at base, widest at 

 middle; sides strongly arcuately rounded; lateral margin when 

 viewed from side entire and strongly arcuate ; base truncate on each 

 side, the median lobe strongly produced and feebly emarginate in 

 front of scutellum ; disk with a deep, elongate-triangular depression, 

 the depression wide at middle becoming narrower toward anterior 

 margin, and with a vague, oblique depression on each side near apical 

 angles; surface coarsely, confluently punctate toward sides, finely, 

 densely scabrous on each side of median depression, sparsely, irregu- 

 larly clothed with short, recumbent, white hairs. Scutellum small 

 and round. 



