366 DISCOVERY REPORTS 



averages 0-50 to o-6o mm. In the Paris Type the striae are clearly marked over the 

 whole length of the shell as in d'Orbigny's figure; but there is often considerable 

 variation in the strength and extent of the striae even among specimens from the same 

 station. 



185. Lagena gracilis, Williamson. 



Lagena gracilis, WillisLinson, 1848, BSGL, p. 13, pi. i, fig. 5 ; 1858, RFGB.p. 7, pi. l,figs. 12, 13. 

 Lagena gracilis , Brady, 1884, FC, p. 464, pi. Iviii, figs. 2, 3, 7, 8, 9, ig, 23. 



Fifteen stations: 228, 230, 235, 236; WS 80, 83, 89, 92, 210, 215, 217, 221, 225, 248, 408. 



Frequent and variable. At many of the stations it seems to run into L. candata, 

 d'Orbigny, and at others into L. distoma, Parker and Jones. At WS 217, where the best 

 range of specimens occurred, everything intermediate between these species could be 

 found. Coarsely costate specimens at 235 and WS 221. The most typical at 230 and 

 235 and WS 83, 225, 248. 



186. Lagena distoma, Parker and Jones. 



Lagena distoma, Brady, 1864, RFS, p. 467, pi. xlviii, fig. 6; 1884, FC, p. 461, pi. Iviii, figs. 



11-15. 



Lagena distoma, Cushman, 1918, etc., FAO, 1923, p. 14, pi. iii, fig. 3 (only). 



Ten stations: 228, 236; WS 76, 80, 98, 109, 210, 217, 248, 433. 



Never very common and never attaining the large dimensions which it sometimes 

 reaches, notably in the North Sea. Very good and typical specimens are found at 236 

 and WS 217. [At Cushman's reference {lit supra) fig. 2 is a reproduction of our figure 

 (H.-A. & E. 1913, CI, pi. vi, fig. 6) of L. laevis var. distoma, Silvestri, an entirely diff'erent 

 form.] 



187. Lagena perlucida, Williamson. 



Lagena vulgaris var. perlucida, Williamson, 1858, RFGB, p. 5, pi. i, figs. 7, 8. 

 Lagena perlucida, Heron-Allen and Earland, 1908, etc., SB, 191 1, p. 320, pi. x, fig. 13. 



Seven stations: WS 83, 89, 92, 93, 225, 248, 408. 



Often numerous, especially at WS 83 and 92 . Some specimens approach L. striaticollis 

 (d'Orbigny) in the development of minute basal spines arising from the costae. The 

 Type of Ooliiia striaticollis could not be found in Paris. 



188. Lagena striata (d'Orbigny) (Plate X, figs. 10-12). 



Oolina striata, d'Orbigny, 1839, FAM, p. 21, pi. v, fig. 12. 



Lagena vulgaris var. substriata, Williamson, 1858, RFGB, p. 7, fig. 14. 



Lagena striata, Brady, 1884, FC, p. 460, pi. Ivii, figs. 22, 24, 28, 29, etc. 



Nineteen stations : 51, 228, 236; WS 79, 80, 83, 88, 89, 90, 91, 92, 93, 99, 210, 215, 217, 225,408, 

 433- 



The Oolina striata of d'Orbigny is described as from the Falkland Islands, where it is 

 rare. D'Orbigny's Type is globular, covered with a great number of very fine striae. 

 Typical specimens occur at seven stations only, the best being at WS 89, 215, 225. At 

 these stations the globular form only is present; at other stations the globular form 



