14 Gr. O. Sars. 



crowded together, ^Yhereas the 5th endite is comparatively large 

 and broad. Of the outer appendages, the epipodite is very small, 

 the exopodite, on the other hand, rather large, as compared 

 with the other parts, and of an oblong oval form, with a small 

 angular projection beyond the middle of the distal edge. 



All the specimens examined were of the female sex. The 

 males are probably, as in the other Apodidce, very rare, and 

 only to be found quite accidentally and during a restricted 

 period of the season. 



The colour in alcoholic specimens is somewhat variable 

 being in some specimens pale corneous, in others considerably 

 darker, changing to a deep green. 



Occurrence. Of this form several specimens, some in 

 a very good state of preservation, were contained in the col- 

 lection. According to the label, they were collected by Mr. 

 A. M. Lea, «Near Hay», N. S. W. The specimens examined 

 by Baird were taken by Mr. G. F. Angas, from rain-pools on 

 the Gowler Plain, north of Adelaide, South Australia. The 

 specimen recorded by Brady as L. viridulus Tate, was found 

 by Mr. Th. Tate in the flood-waters of the «Reedbeds,» near 

 Adelaide. The Eev. R. L. King Avould seem to have observed 

 the same species in the neighbourhood of Sydney. 



Distribution. If my identification of the species be 

 correct, its distribution extends to Tasmania (L. viridis Baird) 

 and New Zealand {L. Kirkii Thomson). 



Tribe Concliostraca. 



Fain. Liranadiidæ. 



Gen. Eidimadia, Packard. 



Prof. Packard gives the following diagnosis of this genus : 

 «Shell narrow, oblong, oval, not nearly as wide as in Limnadia, 



