so DISCOVERY REPORTS 



Genus Planispirina, Seguenza, 1880 



25. Planispirina irregularis (d'Orbigny) (F 43). 



Seven stations: 140, 144; WS 27, 33, 154, 177, 314. 



A good series in all stages of growth at St. 140, and WS 33 and 154, and single 

 excellent specimens at the other stations. 



26. Planispirina sphaera (d'Orbigny) (F 44). 



Three stations: 27, 144, 148. 



Many large and typical specimens at St. 144, single good individuals at the other 

 stations. 



27. Planispirina bucculenta (Brady) (F 45). 

 Two stations: 27, 144. 



A single large specimen at St. 27. Many in all stages of growth at St. 144. 



28. Planispirina bucculenta var. placentiformis (Brady). 



Miliolina bucculenta var. placentiformis, Brady, 1884, FC, p. 171, pi. iv, figs, i, 2. 

 Planispirina bucculenta var. placentiformis, Chapman, 1914, EDRS, p. 43, pi. v, fig. 5. 



One station : WS 33 . 



Many specimens in all stages of growth. 



Sub-family PENEROPLIDINAE 

 Genus Cornuspira, Schultze, 1854 



29. Cornuspira involvens (Reuss) (F 46). 



Nine stations: 30, 123, 144, 149; WS 25, 27, 33, 113, 348. 



Always rare or very rare except at St. 144, where it was frequent in both megalo- 

 spheric and microspheric forms, and St. 149, where the microspheric form was frequent 

 and larger than the average, the South Georgian specimens being usually small. The 

 megalospheric form is as usual predominant. 



30. Cornuspira selseyensis, Heron-Allen and Earland (F 48). 

 Seven stations: 27, 45, 123, 144, 145, 149; WS 47. 



Always very rare, but good specimens especially at Sts. 45, 144 and WS 47. 



31. Cornuspira foliacea (Philippi) (F 50). 

 Five stations: 45, 144, 148, 149; MS 68. 



Always very rare but good specimens, notably at St. 144, where a perfect individual 

 over 3 mm. in diameter was found. Fragments of specimens almost as large were seen at 

 MS 68. 



