OKT THE GENUS EAMFLHSTA. 



339 



known specimens supplies full eyidence of their general agree- 

 iDent with accepted types and subtypes oi HamuUna, and of the 

 varietal or even specific differences among themselves. 



§ 3. Enumeration of the various Type-species of Eamulina, and 

 of tlie puhlisTied Figures referable to them. 



1. Ramulina laevis, Bupert Jones, 1875. 

 Figs. 1-4. 



"With the original description of this species given in 1875 

 there was associated another, nearly similar, form of Ramulina, 

 namely R. hrachiata. Since this latter does not differ from the 

 former in any essential particulars, and, in fact, helps to complete 

 the diagnosis of the species, it is here referred to R. Icevis. 



Specific Characters. — Test free, straight or branching ; con- 

 sisting of pyriform or subglobular segments united by more or 

 less curved stolon-tubes. These latter sometimes proceed laterally 

 from the segments, at others radially. The surface of the testis 

 quite smooth. Texture thick, in this latter respect resembling 

 R. aculeata. 



References to published Figures and Descriptions of the 

 figured Specimens. 



1. ' Polymorphum, Sphserula vitrea laevis,' Soldani, 1791, Testaceo- 



graph. &e. vol.i. part 2, p. 115, pi. cxix. fig. G. — Subglobose, 

 smooth ; two blunt projections, or short tubes, on one side, 

 make it look like a skin-bag tied up at two places. Medi- 

 terranean. 



2. Ramulina Icevis, Jones, 1875, Eep. & Proc. Belfast Nat. P. 



Club, 1873-74 ; Appendix III, 1875, p. 88, pi. iii. fig. 19.— 

 Three slightly inflated pyriform segments, united by short 

 stolons, one of which projects laterally at right angles to the 

 line of growth. Surface smooth. Chalk; Ireland. — Pig. 1. 

 8. Ramulina hrachiata, Jones, 1875, Eep. & Proc. Belfast Nat. 



