118 Major E. E. Austen on the 



Jiian FernaiKlez, collected by the Sn'edisli South Pacific 

 Expedition, The aiitenuae are represented in fig. 1, from 

 which it will be seen that in tlie second there are two addi- 

 tional joints in the peduncle, these being subequal in length 

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

 right and left second antennae have tiiese two additional 

 joints, the two antennae being quite symmetrical. Through 

 the semitransparent integument of the last two joints of the 

 peduncle, the muscles and other soft parts can be indistinctly 

 seen to be nnicii contracted, and throughout 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 flagellura 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. 



The second example occurs in a specimen of the small 

 amphipod UyaU hrevipes, Chevreux, from Chilka Lake, 

 India, and is also in the second antenna. In the upper 

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

 the peduncle there projects ujjwards a small appendage 

 nearly 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 in 

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

 secondary flagellura, but it arises on the second or lower 

 antenna and from the penultimate joint of the peduncle, 

 while the normal secondary appendage always arises from 

 the last peduncular joint of 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 on!}'. 



VI. — The Preu of the Yellow Dung-Fly, Scatophaga sterco- 



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



(Piiljli.slied by permission of the Tnisteeo 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-History and Habits of the Yellow Dung- Fly {Scatophaga 

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

 a Preface by Prof Maxwell Lefrov, F.Z.S. Proc. Zool. Soc. Lond. 

 1920, pt. iv. pp. G29-G47, figs. 1-14 (December, 1920). 



