300 CLARENCE M. WEED. 



almost black. Legs black, except bases of femora, which are brown ; tegiilie 

 oil-green; wing insertions yellowish ; veins and stigma yellowish brown, lighter 

 near body; stigma darker than the veins, sometimes dusky. Antennae on 

 sliglit frontal tubercles, black ; joint iii equal to iv plus v ; iv a little longer than 

 V; basal part of vi short, a little more than half as long as v; distal part of vi 

 distinctly longer than iii, with three minute spines at tip, the inner longest and 

 recurved. Cornicles dusky, of medium length, very slightly swollen from base 

 outward, flanged at tip. Style well developed, sides parallel till toward tip, 

 where they contract to meet in a right angle. 



Described from iiitviiy living specimens on Pyrus malus, Nov. 4, 

 1892, Hanover, N. H. 



IVlelaiioxaul litis salivti (Harr.). 



This species is very abundant in Hanover, often almost covering 

 large trees. Its habits and appearance here are precisely Lke the 

 species as I found it in Ohio, and described in previous contributions 

 of this series. Large numbers of the wingless forms were affected 

 by a small Hymenopterous parasite. 



illelaiioxaiitliiis jitalicis (L.). 



This species occurred commonly about Hanover during the Au- 

 tumn of 1892. The form, color and habits were precisely like those 

 observed in Ohio, except that wingless males — a form not before 

 found, were rather common. 



Wingless Hale. — Body 2.4 mm. long; 1 mm. wide; auteunge 1..t mm. long. 

 Body flattened, elongate, and with legs and antennae very hairy. Dorsum 

 bluish black, with more or less glaucous bloom, and a faint indication of a 

 whitish, central, longitudinal marking, and a row of indistinct white dots along 

 dorsal margin at each side of abdomen. In some specimens dorsum of head and 

 thorax, slightly tinged with brown. Basal half of autennse brown, the rest 

 black; eyes black; cornicles orange-yellow, paler at base and tip; ventrum drab- 

 brown, darker toward cauda. Legs russet-brown, with coxae unicolorous with 

 ventrum, with tips of femora (especially in last pair) and tibia together with all 

 of tarsi, blackish ; rostrum drab-brown at base, dusky toward tip. Third joint 

 of antennae longest, but much shorter than joint iv plus v, the latter being 

 subequal ; vi and vii also subequal, the two together being about as long as v. 

 Third joint with many pores; a well-developed tubercle on each side of the 

 prothorax. 



Described from many living specimens, one of which was seen in 

 copula with an oviparous female, taken on iSalix at Hanover, N. H., 

 October, 1892. 



IVIelaiioxanthtis flocculosus Weed. 



A few colonies of this species were found upon willow in Hanover. 

 The wingless male was common in October. It may be described 

 as follows : 



Wingless Male. — Body 2.8 mm. long ; 1 mm. wide ; antennae 2 mm. long. Body 

 long, slender, flattened; its sides parallel from mesothorax to base of cornicles; 

 flocculent, especially on ventrum and dorsal margins of abdomen; a distinct 

 margin on each side reaching from mesothorax to end of abdomen. General 



