June, isy2. 1 ]^ j,5 



Hah. : on black currant, in company with Pulvinay^ia ribesice, 

 Sign., at Wakefield, Yorks. Received from Mr. Geo. Parkin. 



I discovered the male sacs on some black currant twigs infested 

 with the females of Pidvinaria ribesice, and as the males of this latter 

 were unknown, I at once concluded that they belonged to this species ; 

 hence the reason for Mr. Douglas having described them as such (I. c). 

 On receiving a second batch of infested shoots I was surprised to 

 find, in addition to numerous specimens of P. ribesice, male and female 

 specimens of the Fseudococcus here described ; these I had the pleasure 

 of seeing paired, which at once decided as to which genus the male 

 belonged. 



Before the males emerge they burst off* a small portion of the 

 sac at the anal extremity, after this the long filaments and the wings 

 protrude before they finally escape. The first male hatched on the 

 7th of April, pairing taking place almost immediately after. The 

 time which the insects under observation remained together varied 

 from 10 to 35 minutes. Ee-pairing takes place, and in one instance 

 a single male fertilized two females. 



This species is a near ally of Ps. mespili, Sign. (Essai, p. 367), but 

 differs in not having the last joint of the antennae as long again as the 

 preceding one, and in being of a greenish-yellow instead of a reddish 

 colour, as stated by Signoret. 



ElPEESIA PULYEEARIA, 71. Sp. 

 ? adult. Pale pink, very elongate, distinctly segmented ; dermis with a few 

 very fine spines and small spinnerets. Antennae (figs. 7 and 7a) of six, sometimes 

 seven, joints, in both the last joint is the longest; rostrum short, the loop extending 

 to anterior legs ; the extended filaments do not reach beyond intermediate legs. 

 Legs (fig. 7b) short, with fine hairs ; tarsi about half the length of the tibiae ; claws 

 fine, with two extremely fine digitules ; anal ring large, with six rather long stiff 

 hairs ; anal lobes obsolete. The female covers herself and eggs with a fine white 

 powder, which is of such a dry nature, that on disturbing the female it almost en- 

 tirely disappears from her body, some, however, remains on the food-plant. 



Long, 1"50 — 2"25 mm. ; wide, "50 — 1 mm. 



Larva active, pale yellow, elongate-oval. Antennae (fig. 7c) of six joints, of 

 which the 6th is the longest, and equal in length to the first four ; joints 1 to 5 

 in length nearly equal, all with fine short hairs ; loop of rostrum reaching to inter- 

 mediate legs. Legs short, with fine hairs ; anal ring with six small hairs ; anal 

 lobes normal, each with a long hair. 



Male unknown in any stage. 



Sab. : qn A^rostis vulgaris, at Saudiway, Cheshire, August, 1891. 

 This species inhabits the basal portions of the stems of the above 



grass, and the insects locate themselves between the stem and the leaf 



p 



