10 GOES, RETICULARIAN RHIZOPODA OF THE CAUIBBEANSEA . 



L a g e n ae 



are but scantily represented on our localities. As the more remarkable forms I 

 have noted : 



L. laevis MONTAG. (L. vulgaris WILL.) appears in two forms, one highly developed 

 with a long neck, and another stunted, starved and with a short neck or with a thick- 

 edged mouth, nearly without neck; such pigmy forms are often somewhat compressed 

 and sometimes two-chambered; 



L. laevis var. desmophora RYM. JONES (Java deep-sea Lagenae; Trans. Lin. Soc. 30, 

 p. 54, t. 19, figg. 23 24). Our form differs in having the chain-like ornamentation 

 wound in a whole spiral from the bottom to the middle of the neck; the Java speci- 

 mens being furnished with several longitudinal garlands or chains. It is one of the 

 finest forms, well developed, but very scarce, from the ooze; 



L. laevis var. marginata WALK & JAC; it is of the same shape as Entosolenia margi- 

 nata var. lagenoides WILL. (Brit. rec. Formf. p. 11, fig. 25), L. lagenoides Rss. (Lage- 

 noid: Wien. Ak. S. Ber. 1. 46, p. 324, t. 2, figg. 27 28) arid L. vulgaris var. alato- 

 marginata RYM. JONES (loc. cit. p. 60, t. 19, fig. 44); it occurs in the ooze, scarce and 

 in a pigmy state; 



L. laevis var. tetragona PARK. & JONES (Phil. Trans. 155, 1. t. 18, fig. 14), pretty 

 well developed, but scantily represented in the ooze. 



L. squamosa MONTAG., scarce and starved. 



L. distoma polita PARK. & JONES (N. Atl. and Arct. Oc. ; Phil. Trans. 155, I. p. 357, 

 t. 13, fig. 21). It may be considered as a variety of L. Ia3vis; is found in the ooze 

 well developed but scarce; 



The insignificant part that the Lagenae seem to take in the formation of the chalk- 

 ooze and our scanty supply of specimens may sufficiently excuse my passing over their 

 synonymy, for which, in amplissima forma, I refer the student to Messrs PARKERS', 

 JONES' and BRADY'S admirable treatise on the Crag-Foraminifera (Palaeont. Soc. 19). 



Nodosarina radlcula LIN. 



Tab. I, fig. 12. 



If Nod. radicula L. and Nod. scalaris BATSCH, both having the same simple 

 plan of growth their chief difference being the smoothness or striation of the shell 

 are to be considered as the original types of this genus, two series of forms would 

 be derived from them. Each of these series would then comprise: 



