260 



DESCIUPIIVJi C'ATALOCa:E 



HoBizoN. — U]iper Cretaceous. 



Locality. — Gosau, and in France. 



Type. — Goldfuss' Nullipara pahnata, in the University 

 Collections at Bonn. 



It is probable that Litlwthammam racemosum (Goldf.), 

 Giimbel, p. 284, pi. d iv, figs. L 2 « & L 2 6, is really a small 



Text-Ilg. \b.~Lilhuthammuiii jkiI nalu a ((Tdlilf.), Giimbol. External (onii. 

 Katui-al size. After Giniibel. 



fragment of this species. Tlie size of the cells, viz. Q/nxlO/x 

 instead of T/ixS^ii, is the only apparent difference and hardly 

 seems suflieient basis for a specific distinction where the internal 

 details are so slightly described. 



Lithothamnium Goldfussi, Giimbel. 



1871. Lithothamnmm Goldfussi, Giimbel, AljhanJl. k. Akad. Wiss. 

 jMiinchen, vol. 11, p. 285, pi. d ir, iiys. L 3 « & L 3 b. 



A large, spreading form with wing-like expansions and short 

 branches with rounded ends. The cells arc exceptionallj- large, 

 and measure 70 /j x 24 fi. 



Locality. — In tlio Cretaceous deposits, apparently several 

 localities. 



Type. — Goldfuss' specimens in the Uiiiveisity Collections of 

 Bonn. 



Lithothamnium cenomanicum, liotbplctz. 



1891. Lithothamnium cenoniaiucuii), Rothpletz, Zeitschr. deutfch. 

 geol. Ges., vol. 43, p. 313, pi. xv, figs. 1, 2, 10. 



The thallus consists of rounded, mamillose masses which are out- 

 wardly quite distinct from tlie other species of LitJiotJiamnium. 



