no. 3604 GLYPTOSCELIS — BLAKE 39 



vertical bare line, elytra with a narrow prolongation, more marked in 

 male, whole body covered with fine white hairs. 



Head very lightly punctate over occiput and more densely but 

 finely punctate on front, with fine, white, closely appressed hairs; 

 eyes slightly emarginate at antennal sockets, labriun reddish brown. 

 Antennae reddish brown, slender, extending below humeri. Pro- 

 thorax not very convex with rounded sides, an acute tooth at basal 

 and apical angles, and an impunctate median line, punctures fine 

 and shallow, moderately dense, with fine white pubescence falling 

 horizontally away from median bare line. Scutellum shining piceous 

 with a few white hairs. Elytra not much wider than prothorax with 

 humeral prominences, not depressed at all below scutellum but with a 

 little swelling there; punctation fine, not dense, and with horizontal 

 ridging between, particularly noticeable on sides below humeri; 

 apex of elytra with a prolonged narrow tip, not divergent and not so 

 well developed in female; pubescence fine, white, and not entirely 

 concealing surface beneath; in one specimen pale brown hairs inter- 

 mixed. Length 7.5 mm.; width 3.4 mm. 



Type: Male, in British Museum (Natural History). One para type 

 in U.S. National Museum. 



Type-locality: Guatemala, Baly collection. 



Remarks: There is a third specimen in the British Museum with 

 similar labels of "Guatemala" and "Baly collection" that may possibly 

 not be this species. In this one, the prothorax is deep reddish brown 

 and the elytra have an aeneous green lustre. It is unfortunately a 

 female, and there is only the slightest trace of a prolonged tip to the 

 elytra. Glyptoscelis guatemalensis is a smaller and more slender 

 species than G. chontalensis Jacoby and the prolongation of the elytra 

 not so developed, particularly in the female. There is a more pro- 

 nounced tip to the aedeagus, which in G. chontalensis is smoothly 

 rounded without an acute tip at all. 



Key to South American Species of Glyptoscelis 



1. From 11.5 to 14.5 mm. in length (Brazil, Argentina) . . . . gigas Jacoby 

 Smaller 2 



2. Tips of elytra narrowly prolonged 3 



Tips of elytra not prolonged 4 



3. Aedeagus triangular at apex, pubescence on prothorax with vittate 



pattern fascicularis Baly 



Aedeagus round at apex, pubescence on prothorax without vittate 

 pattern aeneipennis Baly 



4. Aedeagus with a long narrow tip 5 



Aedeagus rounded at apex 6 



5. Prothorax with a median bare area (Colombia) dohrni Jacoby 



Prothorax without a median bare area (Chile) gayi Lefevre 



