On the various Forms of Arvicauthis pumilio. G29 



the margins of both wings ; a black spot at the end of each 

 cell ; no other markings. 



Expanse of wings ^^^ inch. 



Kashmir ; one example. 



Family Geometridae. 

 Microloxia vestigiata, nov. 



S . Palpi above orange-red, whitish beneath ; antennae 

 orange, shafts and base white ; frons orange-red, with a pale 

 band ; top of head and abdomen ochreous white ; thorax and 

 wings of a uniform pale grass-green ; costal line of fore 

 wings pale ochreous white; cilia white, no markings above or 

 below : body below white ; legs tinged with ochreous. 



Expanse of wings Ij^t- inch. 



Kashmir ; three examples. 



LXIX. — Notes on the various Forms o/' Arvicanthis pumilio, 

 Sparrm. By R. C. WeOUGHTON. 



The Natural History Museum possesses a very fine series of 

 specimens of this common South-African mouse, amounting 

 to over 130 individuals from more than thirty localities. 

 The majority of these and the best prepared have been 

 obtained by Mr. C. H. B. Grant in connexion with the 

 exploration of the mammal fauna of South Africa now being 

 carried on by Mr. C. D. Rudd, by whom they have been 

 presented to the Museum. Those from Deelfontein were 

 obtained by the same collector working for Col. Sloggett, 

 and other smaller series are due to Mr. F. C. Selous, Mr. J. 

 ffolliott Darling, Sir H. H. Johnston, Mr. li. B. Woosnam, 

 Dr. W. J. Ansorge, Mr. F. J. Jackson, and others. 



A detailed examination of this collection has satisfied me 

 that the general pattern of the coloration in this species (or 

 group of species) is, without exception, absolutely constant 

 in all the forms, which are spread over Africa south of the 

 Equator. 



The coloration, on the other hand, is almost as variable as 

 the pattern is constant. From one or two localities there are 

 series which are fairly evenly coloured, but in the majority 

 of cases there are almost as many variations of colour as 

 there are individuals in a series. 



