no. 3604 GLYPTOSCELIS — BLAKE 37 



Glyptoscelis mexicana Jacoby 



Figure 28 



Glyptoscelis mexicanus Jacoby, 1882, in Biologia Centrali-Americana, Coleoptera, 

 vol. 6, pt. 1, p. 177. 



Between 7 and 9 mm. in length, elongate oblong oval, alutaceous, 

 not at all shiny, dull piceous black with fine white pubescence, legs 

 and antennae deep reddish brown, prothorax densely and almost 

 contiguously, shallowly, and not coarsely punctate, elytra with punc- 

 tures not quite so dense and also shallow and not very coarse, with 

 white pubescence that in type is rubbed off except about sides. Each 

 elytron acute at tip but not noticeably prolonged. 



Head with interocular space about half width of head, front densely 

 and shallowly punctate under the appressed white pubescence, a 

 median occipital depression. Antennae reddish brown, extending 

 below humeri. Prothorax somewhat wider than long, smoothly 

 convex, without depressions, with well-rounded sides, no median 

 ridge or line, punctures shallow, dense, finer anteriorly becoming 

 coarser and more contiguous in middle and towards base, pubescence 

 so rubbed that no pattern is visible. Scutellum with fine punctures 

 and pubescence. Elytra convex with sharp humeral prominences, 

 and a short, deep intrahumeral sidcus, a slight basal callosity on each 

 side of scutellum with a transverse depression below; punctation not 

 so dense as on prothorax but similar in being shallow and not very 

 coarse, becoming finer and not so dense towards apex; pubescence 

 appressed, in type specimen rubbed off except about edges. Body 

 beneath covered with dense white coarse hairs. Length 7.5-9 mm.; 

 width 2.6-3.2 mm. 



Type : Museum of Comparative Zoology, Cambridge, Mass. Cotype 

 in British Museum (Natural History). 



Type-locality: Playa Vicente (Oaxaca) Mexico, Salle collection. 



Remarks: Jacoby wrote that he had two specimens; one is in the 

 Bowditch collection, the other in the British Museum (Natural 

 History). I have seen no other specimen from Mexico or Central 

 America like them with their dull, opaque upper surface. The elytra 

 are acute at the tip but not prolonged. 



Glyptoscelis cliontalensis Jacoby 



Figure 30 

 Glyptoscelis chontalensis Jacoby, 1882 in Biologia Centrali-Americana, Cole- 

 optera, vol. 6, pt. 1, p. 176. 



From 8 to 10 mm. in length, elongate oblong oval, with prolonged 

 tip to elytra, shining piceous beneath the long white appressed 



