CRUSTACEA. 321 



and shorter segments of the body and peduncular joints of the 

 superior antennae, relatively longer inferior antennse, &c., as a com^ 

 parison of the figures will show ; but as Mayer refers to this species 

 (founded upon types from Kio de Janeiro) specimens sent to him by 

 Mr. Haswell from Port Jackson^ and our specimen agrees with Dana's 

 figures of the male in the denticulation of the palms of the second 

 legs and in other characteristic points, T do not venture to regard it 

 as distinct. 



Oaprella novce-zealandice of Kirk * comes very near this species, 

 but differs in the form of the non-ciliated joints of the flageHum of 

 the superior antennse, and the penultimate joint of the second legs is 

 armed (apparently) with but two teeth. Both 0. novce-zealandim 

 and Protella australis, which greatly resemble this species, have a 

 spine or tooth on the penultimate joint of the three posterior legs, ojE 

 which scarcely any indications exist in the specimens I refer to 

 C. attenuata. 



Two other very small Oaprellae, also obtained at Port Jackson, 

 are in the collection, which I am unable to identify with certainty, 

 but do not think it desirable to designate by a distinct specific 



OSTRACODA. - 



The few Ostraeoda collected were subinitted to Dr. G. S. Brady 

 for determination, who referred them to the following species : — 



1. Cypridina albo-maculata, Bawd. 



The specimens collected were from Port Darwin, 12 fms., and 

 Dundas Straits, 17 fms. (No. 161). The original types were from 

 Western Australia, Swan Kiver. 



CIRRIPEDIA. 



1. Balanus trigonus, Darwiii. 



Numerous specimens (mostly small) were obtained at Pott Jack- 

 son, 0-5 fms. (No. 90). Darwin records it from Sydney, and 

 mentions its distribution through the Malaysian seas and its oc- 

 currence at New Zealand and also on the W. coast of the American 

 continent. 



2. Balanus amaryllis, Darwin. 



A specimen from the beach at Port Darwin (No, 176), and 

 several small specimens from Albany Island, 3-4 fms., attached 

 to a shell, appear to belong to this species. In the two largest 

 specimens, however, whose opercula I have examined, the scuta 



" Trans. New-Zeal. Inst. xii. p. 393 (1879). 



