36 MEMOIRS ON THE COLEOPTERA 



which, with some of the allied forms, has been called centralis 

 since the revision of G. H. Horn (Tr. Am. Ent. Soc., 1884, p. 159), 

 may be an extreme form of inconstans ; it has however but very 

 little close relationship. 



The undulata innuba section is clearly isolated by the glabrous 

 under surface and form of the narrow meso-intercoxal surface, 

 and innuba* seems to be an exception in the subgenus in having the 

 larger anterior tarsal claw virtually similar and very deeply cleft 

 in both sexes; it was for this reason that I at first expended a good 

 deal of time in trying to separate the sexes of that species. The 

 presence or absence of the small and almost vestigial tooth of the 

 under side of the anterior claw-joint in this undulata section, which 

 misled Mr. Blatchley in defining his (undulata) dubia, is immaterial, 

 or at least of very little service in classification. 



Section D (parvula). 



The species of this section are of small or very moderate size and 

 of a peculiar elongate and slender form, which characters dis- 

 tinguish them very well in the subgenus Paranomala, aside from the 

 distinctive maculation of the pronotum. We know at present the 

 following three species: 



Clypeus deeply concave, broadly arcuate at apex, with broadly and 

 strongly reflexed margins. Larger than parvula, which it otherwise 

 resembles in form, the pronotum with two slightly elongate dark 

 spots at apex, each oblique behind; head black, coarsely, rugosely 

 punctate anteriorly, more finely and sparsely on the occiput; eyes 

 moderately prominent; antennal club slightly longer than the entire 

 stem, pale testaceous; prothorax more than twice as wide as long, 

 the sides arcuate; hind angles rounded, the anterior obtuse; basal 

 bead fine; surface convex, rather sparsely and shallowly punctate; 

 elytra slightly broader at base than the prothorax, convex, the sides 

 nearly parallel, with nine impunctate striae, the intervals nearly equal, 

 convex, except the second, which is broader and somewhat coarsely 



* The description of Melolontha innuba given by Fabricius is: " Parva, glabra, 

 nitida. Caput nigrum, ore antennisque flavis. Thorax punctatus, niger, margine 

 lateral! testaceo. Elytra substriata, nigra, immaculata. Pectus nigrum. Abdomen 

 testaceum. Pedes nigri, femoribus testaceis. Habitat ." 



The "elytra substriata" doubtless led Burmeister to mistake the species for the 

 smooth Popillia vidua Newm., but its true identity has been established by Ohaus 

 from a specimen supposed, at any rate, to be the original type and we may therefore 

 regard its status as finally fixed. The type as described is a very exceptional condition 

 of the species, the entire pronotum being black in the vast majority of examples 

 before me. 



