EIPERSIA TOMLINII. 187 



and probably fused ; while in fig. 2 a the seventh joint 

 is the longest, the third is shorter than the second, 

 and all the articulations are very pronounced. Legs, 

 like the antennae, small for the size of the insect; 

 tibige with two spiny hairs at the apex ; digitules 

 (fig. 4) to claw and tarsi not knobbed. Anal lobes 

 (fig. 5) indicated by one very long and one short hair. 

 Anal orifice (fig. 5) with six long hairs reaching to the 

 posterior margin. Eyes in the form of a truncated 

 cone. Mentum (fig. 3) biarticulate ; basal joint about 

 equal in length to the apical one ; apex rounded and 

 furnished with hairs. Spiracles (fig. 6) rather long, 

 with a comparatively large trumpet-shaped flange. 

 Dennis between the antennae (fig. 7) with a few short 

 hairs ; there are also fine short hairs and minute 

 spinnerets on the rest of the body. 



Long, 2-3 mm. ; wide, 1*25-2 mm. 



Sac of the female (fig. 1) usually pyriform or peg- 

 top shaped, one end being distinctly pointed ; there are 

 also both elongate and globular forms ; pyriform 

 examples, 34 mm. long; elongate examples, 1'50 

 3 mrn. long ; globular examples averaging 3 mm. in 

 diameter. 



Larva (fig. 8) pale orange-yellow, strongly farinose. 

 Form very elongate. Antenna (fig. 10) compara- 

 tively large ; of six joints, all with fine hairs ; the last 

 joint much the longest ; the third, fourth, and fifth 

 the shortest, and equal in length ; formula 6, 2, 1 

 (3, 4, 5). Rostrum long, resembling that of the adult 

 female ; loop of rostral filaments extending beyond 

 insertion of intermediate legs. Legs long ; digitules to 

 claw and tarsi without knobs (?). Anal lobes (fig. 9) 

 indicated by one long and one short hair. Anal orifice 

 (fig. 9) with six long hairs. 



Ova pale yellow at first, but they darken prior to 

 hatching. 



Habitat. In the nest of the black ant (Lasiusniger), 

 at Portland. They were taken by Mr. H. K. St. John 

 Donisthorpe, in April, 1901. This, at present, is 



