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



15 Stations. 



Generally distributed, often common, the best specimens at Stns. 4 and 10. All the 

 specimens are very true to the type of Balkwill and "Wright's figure. Hardly any 

 variation, except at Stn. 12, where the final chamber becomes very inflated. 



Planispirina, Seguenza. 



47. Planispirina celata • (Costa). 



Spiroloculina celata, Costa, 1855, FFMV. p. 126, pi. i. fig. 14 j 1853, etc., PRN. 1856, pi. xxvi. 



fig. 5. 

 Planispirina celata, Brady, 1884, FC. p. 197, pi. viii. figs. 1-4. 



10 Stations. 



Sparingly distributed and rare, except at Stn. 18, where it is frequent, and at Stn. 2, 

 where a good many specimens occur. The specimens are all small except at Stn. 18 

 where it attains normal size, and they are all of the type figured by Brady, which has 

 been separated by Silvestri under the name Sigmoilina schlumbergeri on the grounds 

 that the recent specimens differ structurally from the fossils originally described by 

 Costa (S. 1904, TB. p. 2G7). As we have not had any opportunity of examining the 

 fossil specimens, and the species is more generally known from the ' Challenger ' figures, 

 we see no present advantage in adopting Silvestri's name. 



48. Planispirina sigmoidea, Brady. (Plate 39. figs. 32-34.) (New to Britain.) 



Planispirina sigmoidea, Brady, 1884, FC. p. 197, pi. ii. figs. 1-3, and p. 194, fig. 5 c. 

 Brady, Parker, & Jones, 1888, AB. p. 216, pi. xl. fig. 16. 

 „ „ Schlumberger, 1887, Bull. Soc. Zool. France, vol. xii. pp. 478-483, 



figs. 1-5. 



1 Station. 



Two small but typical specimens of this rare species, which we take this opportunity 

 of figuring. 



Subfamily Peneiioplidinj. 



Cornuspira, Schultze. 



49. Cornuspira foliacea (Philippi). 



Orbisfoliaceus, Philippi, 1844, EMS. p. 147, pi. xxiv. fig. 25 (error for 26). 

 Cornuspira foliacea, Brady, 1884, FC. p. 199, pi. xi. figs. 5-9. 



5 Stations. 



Occurs at very few Stns., but at Stn. 20 large and typical examples of Philippi's 

 original form, in which the width of the tube increases gradually and slowly. This 

 Philippi type is everywhere predominant, but at Stns. 4 and 12 the form figured by 

 Williamson, in which there is a rapid increase in the breadth of the last convolution, 

 also occurs. 



