H. C. FALL. 



175 



M. Horidana sp. nov.— Closely allied to distinguenda, but believed to he dis- 

 tinctly a summation of small divergences from typical and ordinary forms of 

 that species. One or another of most of the characters mentioned are approached 

 in individuals of distinguenda, but their combination is peculiar and gives to 

 Horidana a fades of its own. The form is slightly but distinctly more parallel 

 than in ordinary distinguenda : the elytra exceed the prothorax in width in a less 

 degree; the color is a clear and uniform pale reddish testaceous, which I have 

 never seen paralleled in distinguenda, in which, in a great majority of specimens, 

 the elytra are more or less brownish and distinctly darker than the prothorax. 

 Aside from the differences in punctuation and pubescence (mentioned in the 

 table i, which are not very marked, it may be said that the femora are a little less 

 slender in floridana, and the tempora are nearly lacking; the latter being usually 

 distinct, though short, in distinguenda. Length 1.4-1.5 mm. 



Ha6;— Florida (Tampa and Punta Gorda). Two pairs in the 

 Hubbard and Schwarz collection. The species is probably confined 

 to the peninsula. 



M. pumila Lee— Distinctly more parallel than distinguenda; nearly 

 uniformly rufotestaceous throughout; pubescence rather long and bristling. The. 

 punctuation of the thorax and of the elytral stria} is somewhat coarser than is 

 usual in distinguenda; the eyes are large, distant on the front by rather less than 

 one and one-half times their longest diameters; tempora longer than in distin- 

 guenda; otherwise much as in the latter species, except as to the prosternum, 

 which is transversely tumid before the coxae, the elevation impressed somewhat 

 at the middle, giving the appearance of an obtuse tubercle before each coxa, 

 which, when viewed in profile, is nearly as prominent as the coxa. The last 

 joint of the front tarsi is not dentate beneath in the % . Length 1.5—1.6 mm. 



J£ a b— New Hampshire ; Massachusetts (Lowell) ; Michigan 

 (Grand Ledge and Marquette) ; Ontario (Rosseau) ; British Colum- 

 bia (Glacier). Collection of Blanehard, Hubbard and Schwarz 

 and ray own. 



Specimens of so-called pumila received by Belon from the United 

 States, have led him to consider this a synonym of distinguenda, 

 while it is possible that they were really pumila, the distinctive 

 characters of which were overlooked, it is much more probable that 

 the specimens sent Belon were really the much more common distin- 

 guenda, since LeConte mixed the two species indiscrimately. It 

 happens, however, that the specimen bearing LeConte's label, and 

 which may, therefore, be considered the type, is the species here 

 described. 



M. aCUlifera sp. nov.— Our smallest species; color uniformly pale rufo- or 

 flavotestaceous ; pubescence long and bristling; punctuation of thorax coarser 

 than usual; eyes large, tempora nearly obsolete; side margins of thorax quite, 

 strongly serrulate in some specimens. In the I the prosternum behind the coxae 

 is armed with an erect, acute spine, which arises from the middle of the posterior 



TRANS. AM. EXT. SOC. XXVI. DECEMBER, 1899. 



