260 Transactions. 
Allman's pre of corbula is rather misleading as to its general aspect. 
The ribs are I strongly curved, so that in a direct profile view only 
the middle part of them can be seen distinctly, not only on account of 
difference = pie but of extreme foreshortening of upper and lower 
portions. The figure is more like what the corbula would be if it were 
compressed till the curvature of the ribs should be very nearly straightened 
out. This applies to Hilgendort’s figure also. 
The only corbula seen by me in the Kermadec Island specimen was, 
like Hilgendorf's, very short, being probably incomplete. Sarcothecae on 
TS 
respects, corbulae agree with those of A. divaricata. 
Aglaophenia laxa Allman. (Fig. 15.) 
Aglaophenia laxa Allman, 1876, p. 275 : жыйы; 1896, р. 467. 
Not A. laxa Hilgendorf, 1911, p. 541. 
Not A. laxa Stechow, 1907, p. 199 ; ж P 93. 
Not Thecocarpus laxus Billard, 1913, p. 9 
his species, which is closely dn to A. acanthocarpa, I have also 
received specimens from British Museum. It is described as a smaller 
form than А. acanthocarpa, and of more open habit, the hydrocladia 
Fic. 15. —Aglaophenia аха Allman tees one of 
Allman's есца х 80 
being somewhat less close. e internodes and уйго инән ате not 
shorter, as uv in Allman lune: on the contrary, 6 complete 
internodes of A. laxa are shes equal in length to ч of iios of 
Wie 
