G. P. DEELEY ON THREE WATER-MITES NEW TO BRITAIN. 175 



to crawl slowly upon the vegetation. I took nine specimens, all 

 females, on the date above mentioned, one of which I managed 

 to keep alive in a tube for about a month. 



Lyania bipapillata, Sig Thor. 



This mite is elliptical in form, flattened slightly at the posterior 

 and anterior ends. Colour red with brown markings. 



Length about 0'6 mm. Breadth 0'54 mm. 



The dorsal side has a depressed line running all round the 

 margin of the body, and is covered with fine green markings. 

 Eyes very distinct, not very far apart. Epimera formed close 

 together, and covering nearly the whole of the ventral surface. 

 The posterior parr of epimeral plates are produced backwards 

 and rounded, the whole surface being covered with fine markings. 

 The genital plates are in two parts, formed on a depression, 

 which appears to run round the body when viewed ventrally, 

 very similar to that of the genus Brachypoda. There are three 

 acetabula on each plate, and several small pores, and two nipper- 

 shaped projections from the centre of the plates. Two strong 

 teats, each terminating in a short hair, project from the depressed 

 surface, one on either side of the genital area. Palpi thin with 

 several long hairs, and a small peg on last segment but one. 

 Legs sparingly supplied with short hairs — 1st pair "42 mm. 

 long, 2nd pair *35 mm., and 4th pair '54 mm. Colour almost 

 transparent. 



Only one specimen taken, a female. 



Locality. Him ley Park, Staffs. 



The genus Lyania has not hitherto been recorded for Great 

 Britain. 



