FORAMINIFEKA OF THE WEST OF SCOTLAND. 



217 



50. Comuspira diffusa, Heron-Allen & Earland. 



Cornuspira diffusa, Heron-Allen & Earland, 1912, etc., NSG. 1913, pp. 272-276, pi. xii. ; 1913, 

 CI. p. 37. 



1 Station. 



Two fragments, distinctly referable to this species. 



51. Cornuspira carinata (Costa). 



Operculum carinata, Costa, 1853, etc., PEN. 1856, p. 209, pi. xvii. fig. 1 A, B (error for 15). 

 Cornuspira carinata, Brady, 1884, FC. p. 201, pi. xi. fig. 4 a, b. 



6 Stations. 



Occurs very rarely, but fairly large individuals at Stns. 2 and 8. Only at the latter 

 Stn. were the specimens at all strongly marked in the specific feature of the produced 

 edge. 



52. Cornuspira selseyensis, Heron-Allen & Earland. 



Cornuspira ? Earland, 1905, FBS. p. 199, pi. xiii. figs. 2-4. 



Cornuspira selseyensis, Heron-Allen & Earland, 1908, etc., SB. 1909, p. 319, pi. xv. figs. 9-11. 



12 Stations. 



Less widely distributed than C. involvens, and except at Stns. 12 and 20 far from 

 numerous. Megalospheric individuals are exclusively found at all Stns., except 10, 12, 

 20, and 26. 



53. Cornuspira involvens (Reuss). 



Operculina involvens, Reuss, 1849-50, FOT. p. 370, pi. xlvi. (i.) fig. 30 (error for 20). 

 Cornuspira involvens, Brady, 1884, FC. p. 200, pi. xi. figs. 1-3. 



15 Stations. 



Generally distributed, the specimens all very small except at Stn. 14, and especially 

 at Stn. 20. At these two Stns., and also at Stns. 10, 17, and 19, both megalospheric 

 and microspheric forms occur. The proportions vary : at Stn. 10 the megalospheric, and 

 at Stn. 20 the microspheric predominate. At all the other Stns., except Stns. 2 

 and 23, where single small microspheric individuals occur, the specimens are all 

 megalospheric. 



51.. Cornuspira angigyra (Reuss). (Plate 40. figs. 10, 11.) (New to Britain.) 



Operculina angigyra, Reuss, 1849-50, FOT. p. 370, pi. xlvi. (i.) fig. 19. 



Queustedt, 1885, Handb. Petref. Edn. 3, Abth. 5, p. 1052, pi. lxxxvi. fig. 21. 



1 Station. 



A single specimen from Stn. 2, which we figure, which in the flatness and regularity 

 of its chambers and their even diameter and square sections appears to be referable 

 to Reuss's species. 



