36 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 123 



Glyptoscelis cahitae, new species 



Figure 29 



From 7.5 to 9 mm. in length, oblong oval, somewhat shiny, piceous, 

 antennae and sometimes tibiae and tarsi deep reddish brown; 

 prothorax densely and shallowly punctate with well-marked median 

 bare line, elytra with rather fine punctation tending to be geminate 

 striate, some ridging near base and bare lines parallel to suture in 

 apical half; white pubescence on prothorax fine and thick, coarser 

 on elytra with some denser white patches in rows. 



Head with interocular space approximately half width of head, a 

 median bare impunctate line down front, a little swollen or ridged in 

 middle of front, and with fine, thick, closely appressed white pubes- 

 cence. Antennae extending slightly below humeri, basal joint dark, 

 remainder slightly paler and usually deep reddish brown, the outer 

 joints somewhat thickened. Prothorax wider than long with curved 

 lateral sides, moderately convex and nearly as wide as elytra; a 

 prominent bare median vertical line, on each side of which dense, 

 shallow punctures with fine dense white pubescence arranged in a 

 pattern away from median line toward base, and more horizontally 

 toward sides near sides. Scutellum with a few white hairs. Elytra 

 not much wider than prothorax, with small, not prominent humeri and 

 very little intrahumeral sulcus; punctation rather fine, some hori- 

 zontal ridging near scutellum and below humeri; punctures tending to 

 be in double rows with bare intervals particularly near apex and 

 suture. Body beneath with white pubescence, thicker on sides of 

 metathorax; tibiae and tarsi sometimes not quite so dark piceous as 

 femora. Length 7.5-9 mm.; width 3.5-4.4 mm. 



Type: Male, in California Academy of Sciences, and 23 paratypes, 

 of which 6 are in U.S. National Museum. 



Type-locality: Los Mochis, Sinaloa, Mexico, collected in June and 

 July 1922 by C. T. Dodds. 



Other locality: Yaki Valley, Mexico, A. W. Morrill, Feb. 8, 1922. 



Remarks : This is the third species of a group made up of G. prosopis 

 Schaeffer from Brownsville, Tex., G. sonorensis from Sonora, Mexico, 

 and the present one, G. cahitae, which differs from the other two by 

 being generally wider and more robust in appearance. Like the 

 Sonoran species this one differs too from G. prosopis in having incon- 

 spicuous humeri. The elytral punctation is different from both the 

 others in that the punctures are more widely separated with bare 

 intervals especially noticeable in the apical half. As in the Sonoran 

 species the claw is toothed nearer the base than in G. prosopis. 



