DYNASTIN^: 273 



widely separated in the series, deeply annulate, coarse and confused 

 at apex as usual but not along the sides; pygidium ( 9 ) more exposed 

 in the type, feebly convex and strongly though sparsely punctured 

 throughout, the basal margin hidden by the elytra; legs as in brevis. 

 Length (9) 17.0 mm.; width 8.4 mm. Mexico (the locality not 

 recorded) *longulus n. sp. 



Body more oval, very strongly convex, polished black, the elytra not or 

 barely longer than wide 3 



3 Form (cf) moderately stout; head moderately small, fully two-fifths 

 as wide as the prothorax, coarsely, subevenly, not very densely 

 punctate, the clypeus more finely, discretely and deeply punctate; 

 ridge moderately high and thin, feebly depressed at the middle and 

 gradually evanescent laterally rather close to the sides; clypeus 

 not so short as in brevis, the oblique sides straighter to the apical 

 tubercle and the sides below the elevated margin are far less ex- 

 panded, so that they are but slightly visible from above; eye-canthus 

 very broadly rounded and scarcely so prominent as the eye; pro- 

 thorax rather short, fully one-half wider than long, transversely 

 oval, of the same general outline as in longulus but with the punc- 

 tures everywhere very coarse, not quite so coarse and sparser basally, 

 very coarse and deep antero-laterad, the median line behind the 

 middle feebly impressed and with a few very coarse punctures; 

 scutellum not only very small but narrow, longer than wide, differing 

 in that way from either of the preceding; elytra barely visibly longer 

 than wide, rounded in apical two-fifths, the striae very coarse but 

 shallow, fully as wide as the narrower intervals; the latter alternate 

 slightly in width; punctures very coarse, deep, perforately elliptic- 

 annular at the bottom; pygidium strongly, umbonately convex just 

 below the middle, very coarsely, confluently punctate basally and 

 with very coarse but separated punctures thence over the entire 

 surface to the apex; abdominal segments each convex and with a 

 widely spaced series of coarse punctures; legs nearly as in the pre- 

 ceding species, the spinules of the hind tibiae close-set and a little 

 longer. Female smaller than the male but otherwise nearly similar, 

 the punctures of the head and prothorax almost similar in coarseness 

 and distribution, but everywhere rather less close-set; elytra a little 

 shorter, barely longer than wide and rounded in posterior half, the 

 sculpture as in the male; pygidium with only the tip exposed in the 

 single example at hand, this nearly flat and very coarsely punctate; 

 sutural angles of the elytra minutely subdenticulate in both sexes 

 but especially in the female. Length (cf 9 ) 13.5-14.7 mm.; width 

 6.7-7.2 mm. Texas (Valley of the lower Rio Grande). [Phileurus 

 cribrosus Lee.] cribrosus Lee. 



Form (cf) larger and notably stouter than in cribrosus, suboval, strongly 

 convex, highly polished, deep black throughout; head two-fifths as 

 wide as the prothorax, sparsely and very moderately punctate, 

 coarsely rugose at the sides, the clypeus shorter and more concave 

 than in cribrosus, very much more shining, the sculpture consisting 

 of very feeble sparse rugulosity and with very widely scattered 

 T. L. Casey, Mem. Col. VI, Oct. 1915. 



