124 STANLEY HIRST — ON THREE NEW SPECIES OF GAMASID MITES, ETC. 



{Hugh Glasgow, presented to the Museum by the Imperial Bureau of 

 Entomology) and others captured on Mus rattus at Colombo {L. F. Hirst). 



Dr. A. C. Oudemans states" that L. echidninus, Berl., is identical with 

 L. hilaris, Koch. He kindly lent me for a short time some specimens of the 

 species which he considers to be L. hilaris. The female specimens which he 



Fig. 4. — Laelaps echidninus, Berlese, 9 ? s ^ e v i ew of chelicera. 



sent me (taken on Mustela vulgaris at Gramsbergen) represent a species which 

 is certainly quite distinct from L. echidninus, the sternum of these specimens 

 being much wider as compared with its length, and the spines on the tarsus of 

 the fourth leg much shorter as compared with the length of this segment of the 

 limb, than in L. echidninus. 



Laelaps agilis, C. L. Koch. 



Material. A number of specimens of this species captured on Arvicola sp. and 

 on Talpa euro-pea at Grunberg, Germany, 9th July 1910 (R. E. Hoffmann), 

 have been presented to the British Museum by the Hon. N. C. Rothschild. We 

 have also some mounted preparations and a number of specimens in spirit taken 

 on water voles {Arvicola sp.) — these specimens have no history or locality, but 

 probably they are English. Dr. A. C. Oudemans has also lent me some 

 specimens captured in Holland. 



* Ent. Ber. Nederland Ver. Ill, 1912, p. 262. 



