Longicornia of Mexico and Central America. 271 



fact, connected by almost insensible gradations. It is 

 otherwise with the two following varieties, which might 

 indeed, with some show of reason, be regarded as dis- 

 tinct species. 



Malacoscyliis Jmniilis var. (jrisescens. 



M. luimili tyjnco differt prothoracis disco elytrisque pube grisea 

 vel fulvo-grisea obtectis, corpore subtus versus latera ( ^ ) cinereo 

 pubescente. 



Hah. Mexico, Omilteme (8000 ft.), Chilpaucingo 

 (4600 ft.), and Xucumanatlan (7000 ft.), in Guerrero 

 {H. H. Smith). 



The specimens which I have placed together under 

 the above name agree very closely in general form and 

 structure with the more typical forms of M. hamilis. 

 Their coloration is, however, so distinct that I have 

 thought it well to give this variety a separate name. 

 The whole of the upper side, with the exception of the 

 usual fulvous vittse on the prothorax, is covered by a 

 more or less dense dark grey or fulvous grey pubescence ; 

 the under side of the female has a somewhat similar 

 pubescence, but in the male the pubescence of the under 

 side varies from pale greyish to ashy white, with always 

 a distinct patch of the latter colour, sometimes mixed 

 with fulvous, along the sides of the meso- and meta- 

 thorax. 



Malacoscyliis humilis, Bates, xav.falvescens. 

 (PL XIL, fig. 16, ? ). 

 M. humili typico differt elytris testaceis, pube fulvescente fere 

 oinuino denseque obtectis. 



Hah. Mexico, Omilteme and Chilpancingo in Guer- 

 rero {H. H. Smith). 



Three examples only of this very distinct variety were 

 taken. The elytral derm, which is almost entirely 

 testaceous in colour, is so closely covered by a pale 

 tawny pubescence that the punctuation is very incon- 

 spicuous, and in places quite invisible. In the ordinary 

 form, and in the preceding variety, the rather close and 

 moderately strong punctuation is clearly enough dis- 

 cernible, though it should be mentioned that in one 

 female example of the var. griscscens the punctuation is 

 almost as much concealed as in the present variety. 



