262 Dr. Rudolf Hausler on Jurassic Varieties 



especially the branched species, one species (the Madrepora 

 cytherea) forming large slabs. Of the family Poritidae we 

 have Porites ; the numerous family of Astrreidse is chiefly 

 represented by the beautiful Galaxea, Manicina, Goeloria, and 

 Mceandrina, which is much used in making lime ; immense 

 blocks are taken to Colombo by boats for the purpose. Of the 

 Milleporidae we have one foliaceous species growing in masses. 



Of the family of Favositida? one species of Pocillopora (grdndis) 



grows luxuriantly, forming extensive blocks. One block 

 which I removed from the growing mass two men carried with 

 difficulty. Among the Alcyonoids there are several species of 

 sponge-like appearance under water [Alcyonium and Sarcophy- 

 tum), and remarkable for the beauty of their spicules. Among 

 the reefs are to be found Sponges, Poly zoa incrustingthe bottom 

 of many corals, Holothurians, &c, Melobesia growing in 

 masses with the corals. 



My time having been limited, I have not been able to make 

 a thorough examination of the reefs. 



XXXV. — On the Jurassic Varieties 0/* Thurammina papillata, 



Brady*. By Dr. Eudolf HaUSLEIC 



[Plate VIII.] 



Among the Jurassic Lituolid^e no species deserves our atten- 

 tion in such a degree as Thurammina papillata, Brady, on 

 account of its wide range and especially its great variability. 

 There is no positive evidence of the occurrence of the genus 

 Thurammina in the Lias and the Lower Dogger, although 

 small fragments of a similarly formed arenaceous type have 

 been occasionally met with. The oldest known perfect speci- 

 mens of Thuravimince were discovered in the so-called Spatli- 

 kalke of the Upper Bathonian zone of Rkynchonella varians ; 



# Brady. " Notes on some of the Retieularian Rhiaopoda of the 



•Challenger' Expedition/' Micr. Jouro. vol. xix. n. s. p. 26, tab. v. 



figs. 4-8. 



Carpenter. ' The Microscope and its Revelations,' fifth ed. p. 533, 



fig. 273, g, A. 



L-HLie. "Ueber einige oberjurassisehe Foraminiferen mit agglutinin 



render Schale/' Neues Jahrb. f. Min. Jahrg. 1882, B. i. p. 152. 



Hausler. * Die Astrorhiziden und Lituoliden der Bimammatus-Zonz" 



Neues Jahrb. f. Min. 1883, Bd. i. p. 60, Taf. iv. figs. 9-13. 



Hausler. h Notes on some Upper Jurassic Astrorhizidae and Lituolidre " 



Quart. Joura. Geol. Soc. vol. xxxix. p. 27, pi. iii. figs. 2-6. 



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