FOEAMINIFERA OF THE WEST OF SCOTLAND. 245 



162. Lagena spumosa, Millett. (Plate 41. figs, in, 20.) (New to Britain.) 

 Lagena spumosa, Millett, 1898, etc., PM. 1901, p. 9, pi. i. fig. 9. 



„ Heron-Allen & Earland, 1914, etc., FKA. 1915, p. 657. 



1 Station. 



Two excellent specimens at Stn. 2. This curious little double-shelled Lagena, 

 originally described from the Malay Archipelago, is probably widely distributed. It 

 occurs in considerable numbers in the deep water of the Faroe Channel (' Goldseeker,' 

 Stn. 15 A, 12S0 metres), and less abundantly in Hilte Fjord, Norway (260 metres, 

 ' Goldseeker,' Haul 141 ). We have also records of it from Palermo, and from Va\ au 

 (Friendly Islands), Pacific, 16 fms. It is now recorded as British for the first time. 



163. Lagena lSBvis (Montagu). 



Serpula {Lagena) lavis ovalis, Walker & Boys, 1784, TMR. p. 3, pi. i. fig. 9. 

 Vermieulum lave, Montagu, 1803-8, TB. p. 524. 

 Lagena lavis, Brad}', 1884, FC. p. 455, pi. lvi. figs. 7-14, 30. 



19 Stations. 



Almost universally distributed, very common at some Stns., the best at Stns. 12 

 and 17. There is the usual great range of variation, from true flask-shaped specimens 

 with a produced neck to long tapering tests running into L. clavata. Abnormal and 

 distorted shells are frequent at many Stns. The most constant abnormality is of the 

 type which we figured in the Clare Island Report (H.-A. & E. 1913, CI. pi. vi. fig. 5), in 

 which one-half of the shell is developed to a greater degree than the other, resulting in 

 an arcuate test. At Stn. 11 a double specimen, consisting of two shells of different sizes 

 fused into one neck, was found, and at the same Stn. a specimen of the curious abnormal 

 type frequently found in the Lagenidae in which the oral half of the shell was of greater 

 diameter than the basal portion. 



164. Lagena lffivis, var. distoma, Silvestri. 



Lagena distoma {lavis Montagu), Silvestri, 1900, FPNT. p. 245, pi. iv. fig. 43, pi. vi. figs. 74, 75. 

 „ lavis, var. distoma, Millett, 1898, etc., FM. 1901, p. 10, pi. i. fig. 10. 

 „ „ „ Heron-Allen & Earland, 1913, CI. p. 77, pi. vi. fig. 6. 



3 Stations. 



A few individuals of this rare variety at the three Stns. 



165. Lagena semistriata, Williamson. 



Lagena striata, var. semistriata, Williamson, 1848, BSGL. p. 14, pi. i. figs. 9, 10. 

 „ semistriata, Brady, 1884, FC. p. 465, pi. Ivii. figs. 14, 16, 17 (? 18, 20). 



14 Stations. 



Generally distributed and often frequent, but, as a general rule, the specimens are 

 very weakly marked. Excellent examples of the strongly costate type originally figured 



SECOND SERIES. — ZOOLOGY, VOL. XI. 38 



