306 



THE CANADIAN ENTOMOLOGIST. 



aa. Antennas more slender; segments 5, 6 and 7 sliglitly less than two-fifths 

 as wide as long ; segments i and 2 neaily concoloroiis with body ; 

 segment 3 pale yellow; segments 4 to 8 bright lemon-yellow. Pro- 

 ihoracic spines large, rather prominent ; mid-laterals present, fully 

 as long as anterior marginals P. citricorjiis, sp. nov. 



The measurements of the female of this species are as follows : 

 Total length, 2.27 mm. (2.08 to 246 mm); head, length, .32 mm.; 

 width, .21 mm.; prothorax, length .16 mm.; width (including coxae) .37 

 mm.; pterolhorax, width, .42 mm.; abdomen, width, .48 mm.; tube, 

 length, .22 mm.; width at base, .078 mm ; at apex, .043 mm. Antennae : 

 1,42/x; 2, 64/x ; 3, 115/^; 4, 109/x; 5, 92/x; 6, 87/^; 7, 70//; 8, 41//. 

 Total, .620 mm. 



Described from several 

 macropteroiis females from 

 the following localities : 

 Illinois — Dubois, Duquoin, 

 Odin, Pulaski, on hickory 

 leaves (L. M. Smith). 

 Pennsylvania— Harrisburg, 

 Rockville, "on wild grape." 

 The dates range from 

 April 28 to July 16. 



Mega lot hrips (?) spi?iosus, 

 sp. nov. (Figs. 16 



and 17.) 

 Female. — Length about 

 4 mm. Colour nearly uni- 

 form black, excepting 

 tarsi, which are dark black- 

 ish-brown. 



Head slightly more than 

 twice as long as wide, 

 broadly rounded in 

 front, sides subparallel ; 

 dorsal and lateral surfaces finely transversely striate, sparsely and briefly 

 spinose ; anterior portion of head with two pairs of piominent, pointed 

 bristles in addition to the postocular, a shorter pair with their bases 

 slightly behind the posterior ocelli, and a longer pair equal in length to 



Fig. 16.— Megfalothrips (?) spinosus. 



