1921.] ^ (51 



globose above, but with a deep furrow on each side just before the 

 humeral angles, margin behind the furrow cream-coloured, wing-pads 

 and scutellum together considerably broader than prouotum, brown with 

 outer angles of wing-pads yellowish ; metanotum with a blunt spine in 

 the middle, yellowish, with a transverse brown fascia enclosing tlie 

 spine, and a median reddish streak in front ; iirst abdominal segment 

 brown in the centre with two obsolete prominences, and cream-coloured 

 at the sides, which are broad and foliaceous ; this is continued as the 

 cream-coloured connexivum, gradually narrowing to the sixth abdominal 

 segment, when it disappears ; abdomen dark blackish-brown and shiny, 

 very convex above, rising far above the first segment, which lies in a 

 hollow ; underside brown, with three basal abdominal segments broadly 

 margined behind with cream-colour ; legs brown, with first two pairs of 

 tibiae paler ; front femora beneath with stout, dark spinous hairs, mainly 

 in two rows, these being replaced in the adult b}' a large number of closely- 

 set, fine, white silky hairs ; second pair with similar but shorter sliarj) 

 spines, which are replaced in the adult by thickly-set dark hairs, stouter 

 than those on the front femora ; hind pair simple ; tibiae hairy, but 

 with the hairs on the inner side much finer than in the adult ; tarsi with 

 the usual very short basal joint and long terminal one ; basal joint of 

 antennae not so stout as in the adult; body set with a few long, 

 scattered clavate hairs. In some specimens, the parts that are usually 

 cream-colom'ed take on more or less of a red tint. 



(To be continued.) 



ON PHYSOTHRIPS LATUS Bagn., AND SOME ALLIED SPECIES. 

 BY KICHAED S. BAGKALL, F.E.S.E., F.L.S. 



There is very little doubt that the Physothrips ulmifolioruiii of 

 European authors is not the same species as the ulmifolioruiii of Haliday. 



The common species of the elm is the one I have described under 

 the name of Scirtothrips ulmi, and as the larva of my species fits in 

 with Haliday's description of the larva of his Thrips ulinifoliorum, there 

 is little doubt in my mind that S. ulmi should be referred to ulmi- 

 foliorum. 



This being granted, the uhnifoliorum of Uzel and later authors 

 is most probably cotisociata Targ.-Tozz. At any rate, it is known in 

 this eountrv, widely spread, and found on many kinds of trees, though 

 rare. 



