1.S95.] 



213 



Abdomen dovsally with long and soft wliitish-yellow pubescence, the colour 

 shifting to whitish anteriorly, and to light greyish at the hinder extremity ; ventrally 

 with dark grey pubescence shifting to light grey. Superior $ appendages stout, 

 obliquely inflexed : basal joint concave inside ; 2nd joint ovoid and beaked, with 

 the beak incurved. 



A widely dispersed species in middle Europe, considered rare on 

 the continent, but common in many southern English counties : 

 Jersey (McLachlan) ; Ireland (Haliday); northern range unascertained. 

 May to the end of June, and August to the end of September. In 

 collections, females of Fericoma niihiJn are often attributed to this 

 species, and vice versa ; but the greater depth of the forks of the 

 wing-nervures in TJlomyia, and the receding of the limits of the 

 bristling hair on the anterior pobrachial, instead of on the posterior 

 branch, enable the species to be distinguished easily from any Pericoma 

 of similar coloration. Westwood figured the ^ wing from the under- 

 side in Walker's Diptera, cited above. 



(To be continued). 



OBSERVATIONS ON" COCCID.^ (No. 12). 



BY R. NEWSTEAD, F.E.S., 



CURATOR OF THE GROSVENOR MUSEUM, CHESTER. 



ElPERSIA TERRESTRIS, n. Sp. 

 ? second stage (fig. 1) greenish-yellow ; almost covered with white mealy 

 substance ; legs and antennae yellowish. Yery elongate, sides parallel, suddenly 

 narrowed in front, rather widely rounded behind ; segments distinct. Antennae 



(fig. 2) geniculated, placed vei'y close together 

 considerably behind the cephalic extremity, of 

 5 joints, of which 2 is much the shortest and 

 wedge-shaped ; 3 and 4 nearly equal ; 5 the 

 longest ; 4 and 5 together are fusiform. Legs 

 (fig. 3) short ; tibia) and tarsi nearly equal, the 

 latter generally the shortest, with three strong 

 spines arranged close together on the under- 

 side ; digitules to claw and tarsi wanting. 

 Mcntum biarticulate, very long ; filaments 

 rather stout, loop reaching midway between 

 the intermediate and posterior legs. Anal 

 lobes large, with numerous strong hairs. Anal 

 ring with six hairs, placed at the extremity of 

 the body. Dorsum with scattered hairs, more 

 numerous and longer at margins of anal seg- 

 ments, where they are arranged more or less 

 in tufts. On the cephalic region of the dorsum, 

 immediately over the base of the mcntum, are 

 two largo, slightly raised glands ("cicatrice," 



