42 MEMOIRS ON THE COLEOPTERA 



ture dense and asperulo-rugulose as in Group I; body of unusually 

 large size. Neotropics Group IV 



This arrangement disposes in a seemingly satisfactory way of all 

 the forms having a tumid mesosternum and non-ascending mes- 

 epimera. But the Mexican micans Burm., and nitldula Blanch., 

 have also the protuberant mesosternum, with the true Anomalid 

 habitus, and in these there is a slight tendency in the mes-epimera 

 to ascend before the elytral humeri; one of them, micans, has a 

 closely and deeply sulcate elytral sculpture, of a form frequently 

 observable in Strigoderma, which also has a protuberant mesoster- 

 num. We might infer from this that there may be some correlation 

 between ascending mes-epimera and a protuberant mesosternum. 

 Another and still more puzzling species than micans, in regard to 

 relationship and also having close-set sulciform elytral striae, is the 

 Mexican A nomala hoegei of Ohaus, but this need not concern us at 

 present, as the intermesocoxal surface is flat and narrow and the 

 mes-epimera do not ascend at all before the humeri. 



Group I. 

 Subgenus Spilota in sp. 



Besides such Central American forms as chrysanthe, phosphora 

 and granulipyga of Bates, this group will include the two following 

 more boreal species: 



Form rather elongate-oval, convex, slightly inflated behind, very shining, 

 blackish-piceous, the under surface, elytra and legs paler and more 

 testaceous, the pronotum pale at the sides, the hind femora blackish 

 at base and apically and also the hind tarsi, all but the more pallid 

 areas having a pronounced greenish-metallic lustre; head well de- 

 veloped, feebly convex, sparsely and moderately punctate, the 

 median parts of the front strongly punctato-rugose and with inter- 

 mingled fine punctulation, the clypeus coarsely, deeply punctato- 

 rugose, more than twice as wide as long, trapezoidal, with broadly 

 rounded angles, to almost semi-elliptical, having moderately reflexed 

 edges; eyes very moderate in both sexes; antennal club (cf) slightly 

 shorter than the stem, very markedly so ( 9 ) ; prothorax distinctly 

 less than twice as wide as long, trapezoidal, with feebly arcuate to 

 medially somewhat subprominent sides, the apex sinuate, with 

 prominent angles, which are slightly blunt at apex, the basal angles 

 rounded but not broadly; surface evenly convex, sparsely but strongly 

 punctate, the punctures rather finer and still sparser near the sides; 

 scutellum loosely and rather less strongly punctate; elytra with 

 broad, deeply impressed striae, in which the strong punctures are so 



