12 MEMOIRS ON THE COLEOPTERA 



as a whole, differ markedly from the European in habitus, so that a 

 separate subgeneric designation would seem to be appropriate, 

 more especially as this divergence in facies is supplemented by a 

 rather radical difference in male sexual characters as shown by 

 Ohaus. I would suggest the following subgeneric grouping of the 

 North American species: 



Hind tibiae never notably shorter than the femora, always obtusely and 

 more or less feebly constricted near the apex, that is, surate. . . .2 



Hind tibiae notably shorter than the femora, dilated apically, obconical 

 in form 3 



2 Hind tarsi as long as the tibiae to somewhat longer; anterior tibiae 

 always dentate on the external edge; body small to moderate in 

 size Group I 



Hind tarsi very much longer than the tibiae, the anterior tibiae without 

 trace of external tooth; body extremely small in size Group II 



3 Anterior tibiae dentate externally; labrum very short; ligula narrower 

 than in the two preceding groups and entire at apex; antennal club 

 (cf ) notably long Group III 



Taxonomically this grouping is rather unsatisfactory, by reason 

 of the very unequal extent of the several sections, the second being 

 known at present by only one species and the third by two or three. 

 I have not given any systematic weight to the various developments 

 of the larger claw of the anterior tarsi, first because the form of 

 this claw is subject frequently to marked sexual modification and 

 secondly because it is not accompanied by any evident difference 

 in the general habitus, which is nearly always an indication of true 

 generic or subgeneric validity. The upper surface of the body is 

 always glabrous as in Spilota and the other normal Anomalids. 



Group I. 



Subgenus Paranomala nov. 



This subgenus includes nearly all the American species at present 

 listed under the name Anomala, excepting those assignable to 

 Spilota. The body is oblong, frequently dilated posteriorly, often 

 becoming very narrow and parallel as in parvula, and the integu- 

 ments are more or less thin and almost invariably devoid of the 

 metallic lustre which is so generally developed in Spilota and the 

 European Anomala; this metallic lustre is sometimes visible, 

 however, in comparatively slight degree, on the head and pronotum, 

 as in cincta Say, but never, so far as observed, on the elytra. Para- 

 nomala may be divided into several sections as follows: 



