THE CANADIAN ENTOMOLOGIST. 



17.°. 



one fourth longer than broad ; above on each side with two rows of about 

 seven or eight long clavate and finely serrate bristles, one row is lateral, 

 and one submedian ; at the tip there are two long bristles and two shorter 

 intermediate ones ; the palpi are short and stout, outwardly geniculate, 

 bearing above two prominent clavate hairs, last joint with a slender curved 

 claw and with the usual serrate organ ; first legs as long as body, tarsus 

 slender, tipped with two hairs longer than the joint itself, penultimate 

 joint with two clavate hairs above and two moderately long simple hairs 

 at the tip ; a few clavate hairs on the other joints ; other legs with a few 

 clavate hairs on the joints except the tarsi ; fourth legs about as long as 

 the body; venter with a few scattered simple hairs. Length, .6 mm. 



Specimens were received from Dr. Blatchley, who took them from 

 beneath the wings of an Aradus found near Indianapolis, Indiana. A 

 European species has also been recorded as found on Aradus ; but it is 

 different from ours. 



Fig. I.. 



Pteroptus Americanus, n. sp. (Fig. 6). — Pale yellowish. Body about 

 one and one-half times as long as broad ; truncate in front, broadest just 

 behind the second pair of legs, thence tapering to an almost acute tip ; 

 shield nearly as large as the dorsum, leaving a narrow margin all around, 

 broader on the sides than in front ; peritreme situate over the third coxa^, 



