62 GOÉS, EETICULARIAN RHIZOPODA ON THE CARIBBEANSEA. 



Uvigerina flimorpha Park. and Jones. 



Tab IV, figg.77— 81. 



Thoiigli the designation of »dimorpha» applied to a Sagrina, which genus has been 

 founded on such a character, does not iraply any specific distinction, we still retain 

 Messrs. Parkers and Jones' name for this form, being by no raeans inclined to enrich 

 our nomenclature. 



Its earl}' uvigerina-stage is often reduced to a couple of chanibers, and it would 

 sometimes be bard to recognise the small egg-shaped bodies without any traces of 

 septal marks as Uvigerina, if the somewhat prolonged mouth-necks did not betray its 

 affinity to this genus. 



Our form is highly agglutinant, constructing its shell of the finest chalkdebris 

 and detritus. Its original form is mostly narrow cylindrical, but it seems to accumu- 

 late with age a thick deposit of loosely cemented detritus, so that it becomes egg- 

 shaped Avith a somewhat rough and chalky surface. 



It seems likely, that this species has been confounded by some authors with »Cla- 

 vulina» forms. Clavulina cylindrica Hken. and Karrer is probably identical with it, 

 perhaps also Glandulina rudis of Costa. 



It is not uncommon on the chalkbottom and attains 3 — 4 mm. in length. 



Figg. 77 — 78: the slender form. 



Figg. 79 — 80: the eggshaped one. 



Fig. 81 apertural side. 



Syn. TJvigerina dimorpha (Sagrina) Pabk. and Jone$, 1865, Phil. träns. 1.55. 1, t. 18, fig. 18. 



Glandulina rudis Costa, 1855, Maraa terz. Messina; Mem. Nap. 2, p. 142, t. 1, fig. 12. 



Clavulina cylindrica Hke., 1875, For. Clav. Szåb. Sch. p. 18, t. 1, fig. 8. 



)) » Kaur., 1877, k. k. österr. geol. Eeichsanst. Abh. 9, p. 373, t. 16, fig. 4. 



? Haplophragminm. verruculosum Gumb., 1871, Ulmer Cem. Mergel; Miinch. Ak. Sitz.-Ber. 1, p. 63, 



t. 1, fig. 1. 

 PGlobulina fragaria Gumb., ibid. p. 68, t. 1, fig. 16. 



Appendix. 



Sagrina virgula Bkad., 1879, Notes on Het. Khizop. »Challeng.» Exp.; Qu. Journ. Micr. Se. 



(n. Ser.) 75, p. 275, t. 8, figg. 19-21. 



divaricata Bråd., ibid. p. 276, t. 8, figg. 22—24. 



