JOURNAL 



OF THE 



ROYAL MICROSCOPICAL SOCIETY. 



JUNE 1886. 



TEANSACTIONS OF THE SOCIETY. 



VIII. — Upon the Life-history of ayi Acarus one stage whereof is 

 hnowti as Lahidojjhorus talpse, Kramer ; and upon an 

 unrecorded species of Disparipes. 



By Albert D. Michael, F.L.S., F.Z.S., F.RM.S. 



{Bead 10th March, 1886.) 

 Plates X. and XI. 



In the year 1877 Dr. Kramer of Schleusingen published a paper 

 upon two Aeari which he had discovered parasitic upon the mole.* 

 It was freely asserted by some acarologists that neither of these 

 species were adult, and that they were but immature hypopial 

 forms. The question of what a Hijpopus really is, and what were 

 true Hypopi and what were not so, was less understood then than 

 now. Time, however, showed most satisfactorily that one of Dr. 



EXPLANATION OF PLATES. 

 Plate X. 



!g. 1. — Glyciphagus Crameri, female, dorsal view x 130. 



2. 

 3.— 



4.— 

 5.— 

 6.— 

 7.— 



ventral view x 130. 

 male, dorsal view X 160. 

 „ ventral view x 160. 

 fully grown nymph, 

 hypopial nymph, dorsal view X 160. 



., „ ventral view X 160. 



adult female ; hood of rostrum x 450. 

 „ male; mandible x 380. 

 „ female ; 1st left leg from above x 200. 

 „ „ 4th right leg from the inner side 

 X 200. 

 12. — „ „ „ „ a hair from the 1st leg x 500. 



9.— 

 10.— 

 11.— 



* " Zwei parasitische Milben des Maulwurfs," Archiv f. Naturg xliii 

 pp. 249-59. 



Ser. 2.— Vol. VI. 2 C 



