208 Dr. H. A. Baylis on a 



Macromastioo ferruginosa ruapehuensis, subsp. n. 



Typical material o£ this fly was sent to Mr. Edwards for 

 comparison with his types of ferruginosa. He reports that 

 " The Macromastix is probably a subspecies of raj ferruginosa. 

 differing in the brighter yellow head, the rather lighter 

 colour of the thorax, rendering the pale patch on the pleurae 

 rather less conspicuous, the larger pale markings on the 

 abdomen, the clearer wing-membrane, and the shorter stem 

 to cell ilij ; perhaps also the legs are shorter." The above 

 diagnosis covers the chief points in which this fly differs 

 from ferruginosa^ Edwards. I am very greatly indebted to 

 Mr. Edwards for making this and other comparisons of 

 material. 



Hab. New Zealand (North Island). 



Holotype, J , Mt. Ruapehu, altitude 4000-5000 feet, 

 January 1921 (M. N. Watt). 



Paratopotypes^ 20 S S - 



XVIII. — A Filariid from the African Elephant. 

 By H. A. Baylis, M.A., D.Sc 



(Published by permission of the Trustees of the British Museum,) 



One of the collections of nematodes and other parasites 

 recently forwarded to the British Museum (Natural History) 

 by Mr. A. Loveridge included some material collected by 

 Mr. G. B. Goss from two elephants shot in the Lindi district 

 of Tanganyika Territory. One batch of this material con- 

 tained, besides several other species^ three female specimens 

 oi Si Filaria (sens, lat.), and as no adult Filarial has yet 

 been recorded from either the African or the Indian elephant, 

 it is thought desirable to give a brief account of this form. 

 The absence of a male is regrettable, but the female has 

 certain characters which will probably prove sufficient for 

 identification should the worm be collected again. The 

 position in the host is given on the collector''s label as the 

 " stomach." It may probably be assumed, however, that the 

 Filariids came from the peritoneum or peritoneal cavity, in 

 the neighbourhood of the stomach. The other species in the 

 same batch were determined as Grammocephalus clathratus- 



* With the exception of '^ Filaria " smithii, Cobbold, now referred to 

 the genus Parabrone7na. 



