ON THE GENUS RAMFLINA. 



341 



ture of the teat is very thin and delicate. Recent ; Atlantic 

 and Pacific Oceans. — Fig. 5. 

 Marginulina, cf. Dentalina aculeata, d'Orb., Berthelin, 1880, 

 Mem. Soc. Geol. France, ser. 3, vol. i. no. 5, p. 35, pi. ii. 

 (sxv.) figs. 10-13 h. — Grlobular, subglobular, and ovoid seg- 

 ments, with remnants of stolon-tubes at opposite ends in 

 figs. 10, 11, and 12. Pig. 13 has one aperture only. The 

 segments are more or less distorted in outline, and there- 

 fore cannot be referred to sucb symmetrical or regular 

 forms as Dentalina and Margimolina. The surfaces of the 

 tests are thickly clotbed with fine prickles. Grault ; Montcley 

 (Doubs), France. — Fig. 6. 



3. Moebiusispongia parasitica, Duncan, 1880, Journ. Roy. Micr. 



Soc. vol. iii. p. 377, pi. x. (This has been shown by the 

 recent researches of Mr. A. V. Jennings, Journ. Linn. 

 Soc, Zoology, vol. xxv. (1895) pp. 317-319, to be a true 

 BamuUna.) — Numerous thin-shelled, inflated, and irregular 

 segments, with, stolon-tubes uniting them ; surface covered 

 with fine prickles. The test is within a chamber of Car- 

 penteria rapJiidodendron, Moebius, and a few of the stolons 

 pass into the adjoining chamber. Recent; Mauritius. — 

 Fig. 7. 



4. BamuUna glohulifera, Brady, 1884, ' Challenger ' Reports, 



vol. ix. p. 587, pi. Ixxvi. figs. 22-28. (Figs. 25 and 27 were 

 given by the same author in the Quart. Journ. Micr. 

 Sci. n. s. vol. xix. 1879, pi. viii. figs. 32, 33.) See also 

 .Journ. Roy. Micros. Soc. 1887, p. 915. — For description 

 see No. 1. Fig. 28 shows the peculiar external develop- 

 ment of a segment of BamuUna, an internal septation being 



