426 DISCOVERY REPORTS 



A single good specimen at this station, which is just within the edge of the Continental 

 Shelf to the west of the Falkland Islands at 133 m. The occurrence of this species so far 

 from its original habitat off the East coast of Australia is very striking. The only other 

 records we know are our own from the Terra Nova Expedition material, between the 

 south end of New Zealand and the Antarctic. 



372. Anomalina umbilicatula, sp.n. (Plate XIV, figs. 40-42). 



Fourteen stations: 228, 230, 235, 236; WS 91, 99, 210, 215, 217, 245, 248, 408, 409, 433. 



Test free, almost exactly symmetrical and involute, consisting of i|-2 convolutions 

 with 12-15 chambers in the final convolution; peripheral edge entire, narrow, rounded. 

 Sutural lines curving very distinctly, slightly swollen, much broader at the umbilicus 

 than at the periphery ; surface of the chambers coarsely punctate ; both umbilici 

 depressed ; apertural face heart-shaped ; aperture a V-shaped narrow slit on the inner 

 edge of the final chamber. Colour, white, glassy and highly polished. 



Width, 0-30-0-50 mm.; breadth, 0-28-0-38 mm.; thickness at oral face, 0-15 mm. 



This handsome form is not uncommon at several stations, the best series being at 

 WS 408 and the four " Discovery " stations. All the stations at which it was recorded are 

 either outside or just within the Continental Shelf. It so strongly resembles some large 

 varieties of Noiiion umbilicahda (Montagu) that it might easily pass for that species but 

 for its size and the flare of the umbilical recess, sometimes slightly revealing the inner 

 extremities of the previous convolution. 



It belongs to the group of Anomalina ammonoides , Reuss, but differs in its umbilical 

 region, which is so nearly closed that hardly any part of the previous convolution is 

 exposed. Many more or less involute Atiomalinae have been described, but none of 

 them appear to meet all the features of the Falkland form. Perhaps its nearest relation is 

 Anomalina complanata, Reuss (R. 1851, FKL, p. 36, pi. iii, fig. 3) which resembles our 

 form in the number and markings of the chambers, but is not bilaterally symmetrical 

 and has a sharper peripheral edge and a more open umbilical region. 



Genus Carpenteria, Gray, 1858 



373. Carpenteria lobosa, sp.n. (Plate XV, fig. 19). 

 One station: WS 225. 



Test large, adherent, very thin-walled especially at the surface of attachment, spread- 

 ing over a branchlet of Cellaria sp. which it almost encircles in its growth, consisting of 

 a few (number uncertain) of irregularly formed, dichotomously branching chambers, 

 spreading over each other in a roughly spiral fashion, and extending at the extremities 

 into finger-like processes closed at the ends. From the summit of the final chamber a 

 tube extends in the direction away from the periphery. This tube, which is not vertical 

 but horizontal, and lies in a depression between two of the earlier chambers, appears to 

 be the principal aperture. The surface of the thin walls is polished but pustular in 

 appearance, owing to the presence of great numbers of minute irregularly shaped papillae 

 formed of shell-substance. The colour of individual chambers varies from pale yellow to 



