POEAMINIFEEA OF THE KEEIMBA AECHIPELAGO. 733 



Pobjstomella tstriato-jmnctata Brady, 1884, FC. p. 733, pi. cix. figs. 22, 23 (References). 

 „ „ Eager, 1893, FG. p. 433, pi. xix. figs. 49, 50. 



„ „ „ Millett, 1898, etc., FM. 1904, p. 602 (References). 



„ „ „ Heron-Allen & Earlaud, 1908, etc., SB. 1909, p. 695. 



16 Stations. 



Universally distributed and often common, and attaining a considerable size. The 

 shell-wall is always thin and delicate. Most of the usual varieties are present, but 

 the majority of the specimens belong to the bilaterally compressed type with few, 

 but distinctly marked, retral processes as illustrated by Schultze under the synonym 

 P. rjihba (S. 1854, OP. p. 66, pi. vi. figs. 1-4). 



451. Polystomella Striato-punctata, var. selseyensiS Heron-Allen & Earland. 



Polystomella striato-pundata Heron-Allen & Earland, 1908, etc., SB. 1909, p. 695, pi. xxi. 

 fig. 2. Ditto, var. se/sei/ensis, ibid. 1911, p. 448 (Catalogue). 

 „ „ Heron-Allen & Earland, 1913, CI. p. 146. 



3 Stations. 



Two weak specimens at Stn. 5 and others at Stns. 13 and '?A undoubtedly referable 

 to our variety, which bears tlie same relation to P. striato-punctata as Nonionina 

 (jranosa d'Orbigny bears to the typical JV. depressula (AV. & J.) in the coarser 

 perforations and the presence of secondary beaded deposit in the umbilical recess. 



452. Polystomella crispa (Linne). 



Nautilus crispus Linne, 1767, p. 1162. no. 275; 1788, p. 3370. no. 3. 



Polystomella crispa Lamarck, 1816, etc., ASV. 1822, vol. vii. p. 625. no. 1 (2nd Edn. 1845, 

 etc. vol. xi. p. 302). 

 „ d'Orbigny, 1846, FFV. p. 125, pi. vi. figs. 9-14. 

 „ „ Williamson, 1858, RFGB. p. 40, pi. iii. figs. 78-80. 



„ Mobius, 1880, FM. p. 101, pi. xi. figs. 4-7, & pi. xii. 

 „ „ Brady, 1884, FC. p. 736, pi. ex. figs. 6, 7 (References). 



„ „ Millett, 1898, etc., FM. 1904, p. 603, pi. xi. fig. 2 (References). 



„ „ Heron-Allen & Earland, 1913, CL p. 146, pi. xiii. fig. 14. 



10 Stations. 



Fairly generally distributed, but never abundant. The specimens are, however, as 

 a rule, good and well developed, notably at Stns. 5, 7, and 11. At Stn. 6 an adult 

 individual with calcarate periphery was observed, near P. aculeata d'Orbigny (d'O. 

 1846, FFV. p. 131, pi. vi. figs. 27, 28) and similar to our Clare Island specimens. 



453. Polystomella subnodosa (Miinster). 



Rohulina subnodosa Miinster, /rfe Roemer, 1838, CNTM. p. 391, pi. iii. fig. 61. 

 Polystomella subnodosa Reuss, 1855, TNMD. p. 240, pi. iv. fig. 51. 



„ „ Brady, 1884, FC. p. 734, pi. ex. fig. 1. 



„ „ Wright, 1886, SWI. p. 614. 



