1906.] MAMMALS FROM SOUTH-WEST AUSTRALIA. 473 



for the valuable I'-esults due to Mr. Shortridge's expedition to 

 Western Australia. 



9. Ntctixomus australis Gray. 



5 . 176. North Pool, Laverton. 29 October, 1905. 1650'. 



This is the first record of this fine species in Western Australia. 

 The specimen does not seem to differ in any important respect 

 from the type described by Gray. 



That type, however, is not specimen a of the Catalogue, a spirit 

 example presented by Mrs. Stanley in 1855, but specimen d, which 

 was purchased in 1861 at Stevens's sale-rooms, from the collection 

 of the United Service Museum, to which it had been given in or 

 before 1838 by Major Macarthvir. Both the original description 

 by Gray in 1838, and an independent one by Gould in the 

 ' Mammals of Australia ' (1858), agree so closely with this specimen 

 as to show that no error lias been made in tracing its history. 



Mr. Shortridge says: "These Bats come out rather late and are 

 swift flyers. When passing over water they often dive right into 

 it, probably in pursuit of water-beetles. The stomach contained 

 remains of beetles." 



10. Mus rattus L. 



S . 53, 61, 62. $ . 60. King Eiver. 



11. Mus norvegicus Erxl. 



d . 69. 2 . 59. King Eiver. 



12. Mus MUSCULUS L. 



d. 126, 129, 130, 131. $. 127, 128. Cookerdine Lake 

 Southern Cross. 1163'. 



d. 133. $.132. Parker's Range, Southern Cross. 



S. 165. Jaurdi Hills, near Kalgurli. 1250'. 



$. 174. North Pool, near Laverton. 1650'. 



$ . 178. Hawksnest, near Laverton. 1650'. 



d. *i, ^, 5, 6, 39, 52, 64. 2 . 3,9, 17, 33, 38, 51. King 

 River. 



13. Mus FUSCiPES Waterh. 



_d. 9, 12, 14, 15, 31. $. 6, 7, 10, 11, 32, 54, 63. King 

 River. 



These specimens are clearly Waterhouse's M. fuscipesf, of 

 which they are practically topotypes, while the aquatic Rat 

 figured and described by Gould as M. ftoscipes in the ' Mammals 

 of Australia ' J should bear Gray's name of M. lutreola §. 



* The figures in italics represent specimens numbered by species before 

 Mr. Shortridge commenced the continuous notation of his skins, 

 t Zool. Vov. ' Beagle,' Mamm. p. 66, pi. xxv. (1839). 

 t Vol. iii. pi. xi. (1851). 

 § Grej''s 'Expeditions in Australia,' ii. Appendix, p. 409 (1841). 



