THE CANADIAN ENTOMOLOGIST. 59 



L. RUGOSUM, Signoret, 1873. 



" Among the species which are found on the peach-tree, there 

 is one which is neither L. persicce nor L. rotundum, and which 

 approaches more nearly to the latter than to the former. 



" Z. rugosiim is round, rather elevated and very rugose on the 

 sides, where there is a strong punctuation more or less confluent, 

 and between the points smooth spaces forming a kind of hills. It 

 is of a dark brown ; the antennae are of eight joints, of which the 

 third, ' mutique,' is longer by itself than the five following ones, 

 the fourth, fifth, sixth and seventh of equal length. By the antennse 

 alone, as well as by the shape, it is easy to distinguish L. rugosum 

 from the two other species ; in persicce the fourth joint is longer 

 by itself than the three following, and in rugosum it is equal to 

 the others ; in rotundum the fourth joint is equal to the third, and 

 perhaps even longer ; further, there are only seven joints to the 

 antenna instead of eight. 



" We found this species on peach-trees in our garden, at 

 Clamart. It is not very abundant. Its length is from 4 to 5 mm. 

 by about the same width ; height from 2 to 3 mm. 



"One other peculiarity we ought to point out in this species 

 is the form of the posterior tarsi, which are as if flattened, wider 

 than the tibioe and a third shorter. 



" The anterior tarsi are ordinary, but have a furrow on the 

 internal face. The claws are very wide at the base ; the digitules 

 of the claws are long and unequal in size, the one forming a more 

 extended 'cornet' than the otlui-. The digitules of the tarsi are 

 long and straight, inserted at a distance from one another. The 

 tibiae, in general, present four to five hairs at the summit, one 

 longer than the rest ; the femora have two at the summit, the 

 trochanters one very long one, the coxje two or three. 



"We have never met with the males, but have seen several 

 white shells whence they had emerged. This shell is smooth in 

 this species and rugose in rdiundum.''' 



So far Signoret. Now to return to the Queenston scales. We 

 have here a scale differing from ordinary persicce in being almost 

 round in outline, very dark, and especially very rugose. Surely, 

 then, it is Signoret's rugosum ? But, if at first this seems an inevi- 

 table conclusion, it is rather contradicted by the microscopic char- 



