SCIENCE-GOSSIP. 



\77 



linlcrae, v., 170, SS. 



V. fiisca, v., 170, Si), 

 lisscchlainys, iv., JO, SS- 

 nincrumphalus, iv., 10, 46. 

 magna, iv., 70,^2. 

 initKir, iv., 11, ^y. 

 nuiltispira, iii., iSl, sy. 

 iiuinipurcnsis, iv., 263, 6<). 

 Tiuirata, iv., 284, 7.?. 

 nui.spratii, iv., 10, 45. 

 nagaensis, iii., 206, jj. 

 iiglei, iv., 263, OS. 



/•luhysloiiia, v. \ ■^"*' 

 ' -^ ' \ 170. 



perarcta, iii., 155, /g. 



perrierae, iv., 231, 67. 



pet/OS, iii., 206. 



phlyaria, iv., 139, 61. 



pinacis, iii., 206, j.?. 



I'l.KCTOI'VLIS, S.S., VI., 14S. 



picctostoma, iii., 274,^9. 



V. tricaiinata, iii., 275, 40. 



pulyptycliia, iv., 102, jj. 



ponsonbyi, iii., 17S, 33. 



pseudophis I :^'/°^,'^" 



pulvinaris, iii., iSo, 2j. 



V. continentalis, iii., iSo. 

 /"iitt'ola^ iii., 300. 

 i|iiadrasi, iv., 71,5./. 

 rcfugji, v., 15, 75. 

 repercussa, v. 74, yS. 

 reserata, iv., 37, j/. 

 retifera, iii., 301, 43. 

 revolitta, vi., 76. 

 schistoptychia, iv., 102, j6. 

 schlumbergeri, iv., 138,5^'. 

 secura, iv., 231, 6j. 



( 205, .,-/. 

 I: ■ 



246. 

 scricala, iii., 205. 



shanensis f .'' x_' 



(vi., 77, lOj. 



shiroiensis, iii., < ^J" ~ 



SlMCOLA VI., 14S. 



smithiana, iii., 274, j.?. 



sowerbyi, v., 239, gj. 



stenochila, iii., 204, 2g. 

 V. basilia, iv., 36, 4<). 

 SVKESIA, III., 332, vi., 149. 



Irilanicllaris, iv., 36. 



trochospira, iv., 285, yj. 

 V. bohi)lensis, iv. , 2S5, 77. 



vallata, v., 240. 



viUedaryi, iv., 139, 60. 



woodthorpei, vi. , 15, gS. 



In concluding this consideration of the genus 

 Plcflopylis, I desire to acknowledge my indebtedness 

 to many friends and correspondents without whose 

 ungrudging assistance I could not have proceeded 

 with the task. To Mr. Ponsonby I owe an irre- 

 deemable debt of gratitude, for in addition to valuable 



advice and suggestions, he has placed his unrivalled 

 collection at my disposal. Lieut. -Col. Godwin- 

 Austen, Mr. Edgar Smith, and Mr. S. V. Harmcr 

 have also placed me under deep obligation ; the 

 first-named commimicaled inidescribed material, and 

 all have allowed me access to type specimens. 

 Miss Linter has very obligingly presented me with a 

 series of shells, some of which proved to be new, 

 while finally — for the loan of specimens from their 

 collections, or from collections under their charge — 

 I have to thank I'rof. Boettger, Col. Beddome, the 

 Rev. R. A. Bullen, Mr. W. T. Blanford, Mr. Robert 

 Cairns, Mr. W. E. Collingc, the Rev. Vincenz 

 Gredler, Mr. li. Fulton, fjr. H. Fischer, Prof. 

 Giard, Mr. K. L. Layard, Mr. Jules .MabiUe, I'rof. 

 von Martens, Dr. von .MiJllendorfl', Dr. F. J. II. 

 Merrill, Mr. E. R. Sykes, and Mr. G. B. Sowerby. 

 To the Editor of Science Gossii', I am also 

 greatly indebted for his unremitting courtesy, attention 

 to details, and for affording sp.ace in the | ages of this 

 Magazine, frequently, I fear, to the exclusion of matter 

 more interesting to the general readers. 

 Adelaide Moad, London, N. II'. 

 3iid September, iSgg. 



BRITISH FRESHWATER MITES. 



By Charles D. Soar, F. R. M.S. 



(jContiniied /i'Oin Pa^c iji).) 



GENUS OXUS KRAMER, 1877. 

 '"PHIS genus at present is represented by two 

 ■'• species in Britain, the same two forms which 

 Piersig figures and desciibes as occurring in Germany. 

 The characteristics of the preceding genus apply to 

 this, with the difl'erence that body is depressed, 

 instead of being compressed ; but the long narrow 

 body is still maintained, which is a very unusual 

 feature in other genera of water mites. 



I. O.X11S s/riga/iis Miiller, 178 1. 

 Body. — Long and narrow (fig. i). It is so much 

 depressed that there is no difficulty in getting this 



Oxtts striff tiis. 



mile to lie flat for examination, either dorsally or 

 ventrally. It is about 1. 16 mm. long, and about 

 0.60 mm. in width. Colour varies, sometimes it is 

 of a bluish green, with yellow and brown markings : 

 others are all yellow with brown markings. It has 



