248 MEMOIRS ON THE COLEOPTERA 



obtuse at apex and gradually reflexed, sometimes subacute, the man- 

 dibular teeth shorter, the middle one not half as high as in the male; 

 prothorax shorter than in the complete males but similar in outline to 

 that of the incomplete males, coarsely rugose throughout anteriorly 

 and with some rugosity very narrowly along the base laterally, the 

 apical tubercle broadly triangular, with its tip binodose; oblique sides 

 anteriorly not at all sinuate, with the apical angles much more obtuse; 

 elytra shorter, rather wider than long; pygidium shorter, less convex 

 and more extensively punctate, otherwise similar. Length and width 

 of a complete male 31.7 by 18.0 mm., of the incomplete males 24.5- 

 31.5 by 13.3-17.5 mm., of the female (more uniform in size) 27.0- 

 30.0 by 14.8-17.3 mm. Florida and the Gulf coast to the westward. 



Eight d", five 9 . [Geotrupes antceus Fabr.] antaeus Fabr. 



Female with the anterior thoracic depression much larger and deeper. .6 

 6 Male in the fully developed stage smaller and narrower than in antceus, 

 shining, darker castaneous, paler beneath; head nearly similar, 

 except that the middle mandibular tooth, though equally high, is 

 more triangular, its base occupying all or nearly all the external 

 edge behind the small apical tooth; obtuse clypeal apex with a small 

 acute median denticle; prothorax much shorter, fully three-fifths 

 wider than long, the oblique sides anteriorly more sinuate apically 

 and nearly as much so as in semistriatus; cavity divided by the 

 strongly elevated smooth ridge from the base of the anterior horn, 

 which is shorter than in any other species, only feebly arcuate and 

 barely at all longer than the posterior horns, which are not as long 

 as in antceiis; surface smooth but with coarse wavy rugulosity at the 

 bottom of each of the lateral concavities, except on their posterior 

 slopes, and also with a small external rugose area at the foot of the 

 horns, also a very narrow area at base laterad; apex of the apical 

 horn perfectly simple and subacute; scutellum finely, closely punc- 

 tate at base, with some coarser punctures at the hind part of this 

 basal area; elytra slightly longer than wide, smooth, the minute 

 sparse punctulation intermingled with only very feebly elevated 

 minute pustulosity, the fine punctures at apex closer and stronger 

 than in antceiis; pygidium smaller and shorter but otherwise similar. 

 Female narrower than in antceus, dark castaneous to nearly black 

 above; head nearly as in antceus, the clypeal apex even more broadly 

 obtuse than in the male and without the median tooth; middle 

 mandibular tooth nearly as in antceus but broader at base; prothorax 

 nearly as in antceus, except that the depression is two-fifths the entire 

 width, extending posteriorly evidently behind the middle, the apical 

 tubercle with its apex not binodose; oblique sides toward apex 

 similarly not sinuate but rather subarcuate, though with the apical 

 angles less obtuse; elytra not quite so short as in antceus, the pygidium 

 shorter and very transverse. Length (2 cf , 3 9) 28.0-31.5 mm.; 

 width 16.0-17.5 mm - North Carolina (Southern Pines), Manee; 



also Alabama (Mobile) pinorum n. sp. 



Male in the intermediate stage oblong-suboval, convex, shining, dark 

 castaneous, ferruginous beneath; head rather more than a third as 

 wide as the prothorax, nearly as in the preceding species, the very 



