208 MESSES. E. HERON-ALLEN AND A. EAELAND ON THE 



5 Stations. 



Very rare. The best specimens at Stn. 20. All the specimens are of an excavate type. 

 The species is recorded as new to Britain, but no doubt the numerous British records of 

 S. limb at a (d'Orbigny) refer entirely or principally to this species. We have dis- 

 criminated between the two forms in our Kevimba Monograph, ut supra. 



id). Spiroloculina acutimargo, Brady. 



Spiroloculina acutimargo, Brady, 1884, FC. p. 154, pi. x. figs. 12-15. 



■ „ Heron-Allen & Earland, 1913, CI. p. 24, pi. i. fig. 8. 



5 Stations. 



Very rare. The best specimens at Stns. 10 and 12. They all show a tendency of the 

 later chambers to enfold and envelop the earlier ones. 



15. Spiroloculina acutimargo, var. COllcava, Wiesner. (Plate 39. figs. 1-3.) 



(New to Britain.) 

 Spiroloculina acutimargo, var. concava, Wiesaer, 1913, FAR. p. 521, No. 22. 



1 Station. A single specimen only. 



Wiesner in his paper {ut supra) records this beautiful little variety, and, so far 

 as we are aware, it has not been figured or described in print. He was good enough to 

 send us specimens of his variety from the Adriatic Sea, and its occurrence in these 

 dredgings is very noteworthy. As will be seen from our figure, the variety is very 

 striking and distinctive, being strongly convex on the one side and correspondingly 

 concave on the other. The whole test is exceedingly thin and delicate in structure. 

 The line of curvature is in the direction of the short axis of the shell. Wiesner 

 regards his specimens as a variety of S. acutimargo, Brady ; from the curvature of the 

 chambers it might equally be regarded as allied to S. tenuis. The reason for the curva- 

 ture of the chambers is entirely obscure; it may possibly.be due to the specimens 

 growing adherent to algae in the earlier stages of growth. 



16. Spiroloculina tenuis (Czjzek). 



Quinqueloculina tenuis, Czjzek, 1848, FWB. p. 149, pi. xiii. figs. 31-34. 

 Spiroloculina tenuis, Brady, 1884, FC. p. 152, pi. x. figs. 7-11. 



2 Stations. 



Truly typical examples are very rare, but they occur at two Stns., the best at Stn. 14. 



Miliolina, Williamson. 



17. Miliolina bucculenta, Brady. (Plate 39. figs. 4-6.) 



Miliolina bucculenta, Brady, 1884, FC. p. 170, pi. cxiv. fig. 3 a, b. 



Goes, 1894, ASF. p. 118, pi. xxiii. figs. 890-903. 



1 Station. 



Onu specimen assigned with some hesitation to this species, the aperture being much 

 wider than is the case in any of the deep-water specimens we have seen. This may be 



