192 [AuKuet, 



is its habit, was growing in saline marshes subject to periodical inundation 

 by the sea. They were revealed by turning over stones embedded in the 

 sand below the plants. The young larvae bear a curious superficial 

 resemblance to insects of the family jLiimridae. Newstead makes no 

 mention of any ovisac in connection with this species ; but I found the 

 old sj^ent females enveloped in a thick covering of Avhite pulverulent 

 secretion that had apparently served as a receptacle for the ova. 



In well-stained preparations there is noticeable a lai'ge, sharply- 

 defined, circular opening or pore on the venter, occupying a median 

 position on the 2nd abdominal segment. In some examples it has the 

 appearance of being raised on a conical tubercle ; in others, to be sunk in 

 a funnel-shaped pit. Possibly the process may be eversible. 



^ipersia scirpi^ nov. (Fig. 7.) 



Adult female {a) elongate, hroadly rounded in front and behind, slifrlitly 

 broader across the abdomen. Colour ]iinl<, mure or less concealed beneath a 

 coating of white mealy secretion. Antenna (b) small, G-joiuted, Gtli longest, 

 4th shortest. Limbs relatively smnll but robust (e) ; tibio-tarsua slightly 

 shorter than the femoral segment: ungual digitules short, slightly expanded at 

 extremity; tarsal digitules slender, simple. Anal ring with six moderately 

 long setae. Caudal setae small and incon>picuous. A very few smrdl setiie 

 distributed sparsely over both dorsum and venter, rather more closely on the 

 posterior segment. A broad submarginal zone crowded with relatively large 

 ring-shaped pores {d). Small trilocular pores (c) distributed evenly but m(jre 

 sparsely over the whole body. 



Length 3 to 3'5 mm. ; breadth 1 to L2.5 mm. 



Concealed at base of stems of Scirpus caespitosus, in boggy ground ; 

 Caraberley, June 1920. 



LicMensia vihurni Sign. — When in CornAvall, during the latter half 

 of March and early in April, I found this species commonly on wild ivy 

 growing on walls and roadside banks. Later in April the same species 

 was observed at Lj^me Eegis (Dorset). The colonies of insects, at this 

 time, consisted of female nymphs and male puparia, from which winged 

 males were then emerging. More than two months later, towards the 

 end of June, fresh material received from Lyme Eegis was found to 

 comprise adult females and numerous f ull}^ developed male larvae, with a 

 few newly constructed male puparia. It would appear, therefore, that 

 there are two broods of males, emerging in April and July respectively. 

 So far as records are available, LicMensia viburni appears to occur more 

 commonly in the western counties, the most eastern record being from 

 Tring (Herts). 



