EED SPIDER. 221 



being most desirable for scientific reference, but with a trans- 

 lation appended for general English use : — 



Tetranychus telarius (L.), Dug. 



(Berlese, A., Acari, Myriopoda et Scorpiones, fasc. Ivi. 

 No. 5 (1889.)) 



" T. fuscus, antico pedibusque roseis ; pilis omnibus corporis 

 exilibus, dermate piano (sive non verruculis pilos sustineuti- 

 bus asperate). Mas pene runcato. Ad 600 //> foem., 400 /^ 

 mas long. 



" Habitat perfrequens estate in plantis pluribus, in pagina 

 foliorum inferiore, cum ovis, pullis, fills sericeis, folia occu- 

 pans nee non ea punctura maculans, maribus non minus 

 foeminis frequentibus. 



" Obs. Color pedum, rostri et partis anterioris cephalo- 

 thoracis albidus, roseo prtecipue in pedum et rostri apice 

 sufiusus. Oculi sanguinei. Ceterum abdomen rufo-brunneo 

 (cibo ingesto) infuscatum (tum etiam fusco viride). Sunt 

 series in dorso longitudinales quatuor setarum, duaa medias 

 dueeque marginales. Set?e omues nudte, exiles, omnino pili- 

 formes. Pedes setis longis ditissime ornati. Pedum unci 

 quatuor inter sese sequales. Palpi longiusculi, pracipue in 

 mari, tentaculo apice appendicula hyalina, cylindrica, minori 

 aucti. Corpus ovatum supra convexum, transverse subim- 

 pressum, dermate ad setas in verrucas non elevato. 



" Mas (2) foemina corpore fere dimidio minor (quamvis pedes 

 sint eadem magnitudine quam in foemina) longe cordatus, 

 postice acuminatus, pedibus anticis ceteris robustioribus. 

 Palpi (3) articulo secundo superne gibboso et appendicula (a) 

 corniculari acuti. Penis (6) runcatus, in extreme abdomine 

 iusitus. Color roseus, rufescens, pallidior quam in foemina. 



"Larva (9) hexapoda, globosa, curte setosa, rosea." 



TetranycliiLS telarius (L.), Dug. 



" Dark brown, with the legs and anterior part rose-coloured ; 

 all the hairs of the body slender, the skin smooth (or not 

 roughened by little warts carrying the hairs). Male with the 

 penis shaped like a hook. Length up to six-tenths of a 

 millimetre in the female, and to four-tenths in the male. 

 Lives commonly during the summer on many plants on the 

 under surface of the leaves, covering the leaves with its eggs, 

 young, and silky threads, and sometimes spotting them with 

 its punctures, the males being not less abundant than the 

 females. 



" Obs. Colour of the legs, rostrum, and anterior part of 

 the cephalo-thorax whitish, suffused with rose, especially 



