702 MESSRS. E. HERON-ALLEN AND A. EARLAND ON THE 



individuals were at Stii. IX., where it was frequent and very flat, the next best at 

 Stn. 1, where it was large with inflated lobulate chambers. At Stn. IB a few normal 

 small individuals were found, also a single abnormally large specimen in which the 

 whole of the umbilical cavity was filled up with loosely areolated secondary shell- 

 substance. We have observed a similar variation, accompanied by equal development 

 in size, in Arctic specimens from Davis Straits. 



369. Discorbina wrightii Brady. 



Discorbina purisiensis Wright, 1877, RFDA. p. 105. pi. iv. fig. 2. 

 „ wriglUii Ikady, 1881, HNPE. p. 104, pi. ii. fig. 6. 



Earlaud, 1905, FBS. p. 223. 

 „ „ Heron-AUeu & Earlaud, 1908, etc., SB. 1901., p. 44.3. 



Heron-Allen & Earland, 1913, CI. p. 131, pi. xii. fig. 4. 



12 Stations. 



This rather unsatisflictory little form occurs at most of the Stns. rarely in any 

 numbers, and as usual nearly alvv>ays showed signs of " association " (or budding). 

 The specimens do not call for much remark beyond the fact that in many instances 

 the basal surface is more deeply depressed than is usually the case, and sometimes less 

 prominently striate than usual. We found specimens which we are figuring elsewhere, 

 containing broods of perfectly formed polythalamous young, seen through a large 

 aperture formed by resorption of the basal shell-wall (H.-A. 1915, E,PF. p. 238, 

 pi. 14. figs. 13, 14). 



370. Discorbina globosa (Sidebottom). (Pi. LII. figs. 27-31.) 

 Pulvinulina (jlobosa Sidebottom, 1904, etc., RFD. 1909, p. 9, pi. iv. fig. 3. 



2 Stations. 



At Stn. ■? B a considerable number of specimens were obtained, which ansAver in 

 most particulars to the species figured and described by Sidebottom from Delos 

 as Pulvinulina globosa. If the identification is granted, we are unable to agree with 

 Sidebottom in the allocation of his specimens to the genus Pulvinulina. They 

 appear, so far as the Kerimba specimens can afford any clue, to be referable to 

 Discorbina, both from the construction of their shells, the nature of the aperture, and 

 the fact that many of the individuals show signs of having been in " association " 

 (■? budding), a feature common in that genus, but, we believe, unrecorded in Pulvinulina. 

 The nearest ally of this form is in our opinion I), wriglttii, from which it differs in the 

 greater height of the spire and in the inflation of the chambers with consequent 

 depression of the sutural lines. The Kerimba specimens, as will be seen by our 

 figure, agree very well with Sidebottom's figure and description except in the 

 perforation. In the Delos specimens the test is described as very smooth and finely 

 perforated, but the Kerimba tests have relatively coarse perforations, giving a some- 



