118 Major E. E. Austen on the 



Juan Fernandez, collected by the Swedish South Pacific 

 Expedition. Tlie aiiteniise are represented in fig. 1, fiom 

 vvliicli it will be seen fliat in the second there are two addi- 

 tional joints in the peduncle, these being subequal in length 

 and a little longer than the nonnal fifth joint. Both the 

 right and left second anteru)* have these two additional 

 joints, the two antennae being quite symmetrical. Through 

 the semitransparent integument of the last two joints of tlie 

 peduncle, the muscles and other soft parts can be indistinctly 

 seen to be nuicli contracted, and througliout the whole of the 

 last joint and the distal portion of the preceding joint they 

 appear to be segmented ; apparently this appearance is 

 produced by the soft parts of the flagelluni and terminal 

 peduncular joints being retracted preparatory to the next 

 moult, but there is nothing to indicate with certainty whether 

 the antenna after the moult will have the abnormal number 

 of joints or whether it will revert to the normal form, 



'J'he second example occurs in a specimen of the small 

 amphijiod IJyale hrevipes, Chevreux, from Chilka Lake, 

 India, and is also in the second antenn;i. In the upper 

 distal end of the fourth — that is, the penultimate — joint of 

 the peduncle there piojects upwards a small ap[)endage 

 neaily as long as the joint from which it arises. This 

 appears to be separated from the joint by a distinct articu- 

 lation ; it broadens near the base, but narrows again towards 

 the rounded apex, which bears about six setules, as shown iti 

 fig. 2 a. It bears some slight resemblance to a single-jointed 

 secondary flagellum, but it arises on the second or lower 

 antenna and from the |)enultimate joint of the j)eduncle, 

 while the normal secondary appendage always arises from 

 the last peduncular joint o'f the upper antenna. It is possible, 

 of course, that this abnormal appendage has been the result 

 of some injury. In this case the abnormality occurred on 

 the one antenna of the pair only. 



VI. — The Prey of the Yelloiv Dung-Fly, Scatophaga sterco- 

 raria, L. By Major E. E. Austen, D.S.O. 



(Published by perini.ssiou ot the Trustees of the British Museum.) 



In a preface to a valuable paper on the Yellow Dung-Fly 

 recently published by Mr. G. S. Cotterell *, Prof. Maxwell 



* " The Life-Historj' and Habits of the Yellow Dung- Fly {Scatophaga 

 stercoraria) ; a possible Blow-Fly Check." By G. S. Cotterell. With 

 a Preface bv -t'rof. Maxwell LetVov, F.Z.S. Proc. Zool. Soc. Lond. 

 1920, pt. iv. pp- <J-^0-C47, tigs. 1-14 (December, iy:;;Oj. 



