274 MEMOIRS ON THE COLEOPTERA 



small shallow indistinct punctures, the erect apical tubercle higher 

 and almost spinuliform, the sides below the margins more expanded 

 and visible from above, though not so largely as in brevis; sides before 

 the very small sunken eyes broadly rounded; ridge fine and sharp 

 along the summit, very feebly sinuate at the middle, extending 

 scarcely beyond lateral fifth or sixth; prothorax larger, more than 

 one-half wider than long, the outline and beading nearly similar, 

 but the punctures anteriorly are less coarse and are widely separated 

 even near the angles, very sparse but rather strong throughout 

 basally, the median line impressed feebly behind the middle and with 

 only moderately coarse punctures; scutellum similar, longer than 

 wide, very small in size and with coarse punctures basally; elytra 

 much more inflated, barely at all longer than wide, evidently a little 

 wider than the prothorax and three-fourths longer, more obtusely 

 rounded in about apical third, the parallel sides more arcuate, the 

 very coarse striae and punctures nearly similar, the lines not quite 

 so close-set, due to the greater elytral width, and not quite as wide 

 as the intervals, which are equal among themselves; pygidium with 

 a similar very strong umbonate swelling, the surface more finely 

 punctato-scabrous, not through basal half as in cribrosus, but only 

 near the base, with scattered coarse punctures elsewhere, except on 

 the posterior slope of the umbo, which is very smooth and polished 

 and almost devoid of punctures; abdomen nearly as in the preceding. 

 Female unknown. Length (cf) 16.3 mm.; width 8.3 mm. Texas. 



bullatus n. sp. 



There are probably many species of this genus, which is a local 

 development in northern Mexico and the adjoining parts of Texas; 

 it seems to belong rather to the fauna of the low hot coast regions 

 than to the elevated and drier interior plateaux, the latter forming 

 part of the true Sonoran faunal region. 



Subfamily CETONIIN^. 



In this very important division of the Scarabseidae, the American 

 continents contribute a far smaller proportion of the known genera 

 and species than they do in the preceding two subfamilies, and it 

 is in Africa that the Cetoniinae occur in greatest profusion and 

 variety, including there some of the largest of the Coleoptera. 

 The body generally has a more or less rhomboidal outline, with 

 highly colored or markedly variegated hard integuments and small 

 or very moderate head. The mandibles are very feebly developed 

 as a rule, being a thin corneous plate externally, becoming coriaceous 

 and ciliate within, somewhat as in Aphonus of the Dynastinse, and 

 fitted merely for such light foods as pollen or the sap of trees. 



