Recent and Fossil Foraminifera, 319 



37. Cornuspira selseyensis sp. n. Plate XV. figs. 9, 10, 11. 



Cornuspira ? sp. Earland, 1905, Journ. Quekett Micr. Club, ser. 2, vol. ix. 

 No. 57, p. 199, pi. xiii. figs. 2-4. 



Eecent. The form figured by Earlaud {supra), occurs fairly 

 frequently both at Bognor and Selsey, and also occurs in many of 

 the " Goldseeker " dredgings, made in the North Sea, though never 

 in any marked abundance. As we have little doubt as to its 

 rhizopodal nature, we have thought it desirable, at this stage, to 

 give it a specific name. 



Description.— -Test, free ; bilaterally complanate, consisting of a 

 conical tube coiled upon itself in one plane, the width of the tube 

 approximately doubling at each convolution. Primordial chamber, 

 large, the number of convolutions usually three and rarely ex- 

 ceeding five. Shell substance, thin, often semi-translucent. 

 Frequently marked with corrugations, which apparently indicate 

 periods of rest in the growth of the shell. 



This form may eventually prove to be merely a megalospheric 

 type of C. involvens (Eeuss). 



Peneroplis Montfort. 



38. Peneroplis pertusus Forskal sp. 



Nautilus pertusus Forskal, 1775, Descr. Anirn , p. 125, No. 65. 



Nautilus planatus var. a Fichtel and Moll, 1803, Test. Micr., p. 91, pi. 



xvi. a, b, c. 

 Dendritina elegans d'Orbigny, 1846, Forani. Foss. Vienne, p. 135, pi. vii. figs. 



5,6. 

 Ditto. (d'Orbigny) Terquem, 1882, Mem. Soc. G-eol. France, ser. 3, vol. ii. 



p. 51, pi. iii. fig. lei, b. 

 Peneroplis pertusus (Forskal) Brady, 1884, Forams. 'Challenger,' p. 204, 



pi. xiii. figs. 16, 17. 



Fossil only. One specimen only, small. 



39. Peneroplis pertusus var. arietinus Batsch. 



Nautilus umbilicatus Linne, 1767, Syst. Nat., 12th eel. p. 1163, 278. 



Nautilus semilituus Linne, 1767, Syst. Nat., 12th ed. p. 1163, 280. 



Nautilus (Lituus) arietinus (pars) Batsch, 1791, Conch. Seesandes, p. 4, pi. vi. 



fig. 15 c. 

 Peneroplis planatus d'Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 285, No. 1 ; 



Modele No. 48. 

 Peneroplis petusus (Forskal) Brady, 1884, Foram. 'Challenger,' p. 204, pi. 



xiii. figs. 18, 19, 22. 



Fossil only. One specimen, small. 



