124 H. WALLIS KEW : AN HISTORICAL ACCOUNT OF 



1. Chelifer Hermanni. One specimen. Britain. = Chelifer 

 cancroides (Linn.). 



2. Chelifer Latreillii. One specimen. Britain. = Chelifer 

 Latreillii Leach. 



3. Chelifer Olfersii. One specimen. Britain. Palps lost and 

 surface-sculpture obscured, not determinable with certainty. 

 Cambridge (27) regards it as identical or probably identical with 

 the next species. 



4. Chelifer Geoffroyi. {Chelifer fasciatus Leach, 10, 11). Two 

 specimens. Britain. Both badly corroded ; but a trace of the 

 sculpture is visible. = Chelifer {Chernes) cimicoides (Fabr.). 



5. Chelifer museorum. Three specimens. Britain. = Cheiri- 

 dium museorum (Leach). 



6. Obisium orthodactylum. Habitat sub lapidibus, in Dan- 

 monia et Cantia vulgatissime. Four specimens. Devon and 

 Kent. Three of them = Chthonius Rayi L. Koch, 1873. The 

 remaining one, which is that indicated as the type, is uncertain 

 from its bad condition, cf. Kew (38), p. 56 ; it is smaller than the 

 rest and I have followed Cambridge (27) in regarding it as the 

 smaller less deeply coloured species = Chthonius orthodactylus 

 (Leach). 



7. Obisium museorum. Four specimens. Mountains of Scot- 

 land. = Obisium museorum Leach. The name was misapplied 

 by Simon (22) ; but Obisium museorum Leach of most authors 

 appears to be correctly named ; cf. Kew (38), p. 54. 



8. Obisium maritimum. Habitat in Anglia occidentali inter 

 rupes ad littora maris. Two specimens. W. England. Pre- 

 sented by C. Prideaux, Esq. = Obisium maritimum Leach. 



13. 0. — A lobster-like Insect attacking the Leg of a House- 

 Fly. Loudon's Magazine of Natural History, iv. p. 94.. Lon- 

 don, 1831. 



This writer inquired the name of a creature having claws like 

 a lobster by one of which it clung to the leg of a House-fly ; he 

 thus initiated a correspondence in which Professor J. S. Henslow, 

 Mr. F. C. Lukis, and others took part ; and this is the first of 

 many similar discussions which have appeared in our magazines. 

 The name given is '' Chelifer cancroides ^ = Chelifer {Chernes) 

 nodosus Schr. ? 



