258 



BESCMPTITE CATALOGtrE 



Gurabel's work, it had been described as Cellejiora hiimnciata, 

 Goldf., Memhranipora bipunciata, Blainv., Biscopora hijninctata, 

 Edw., and Marginaria hipunctaia, Eoem. 



The internal structure was studied in more detail by 



Text-Iig. \2.—Lilli:>/h,i,io!ui-,u jiiaiiii/iosvm, Gumbel, to show niiorosfopic 

 di'lails i)f (lie tissue of the peritliaUium. X 80. After Eotlipletz. 



l{otlii)letz(lS91 b), in the hope of detecting reproductive organs, 

 but the available specimens seem to be sterile. 



HoEizoK. — Uppermost Cretaceous (Danian). 



LocALiir. — Petersberg, near Maestricht. 



Type. — Goldfuss' specimen of Cellepora Inp^inetida in the 

 Palajontological JIuseum, Old Acadcmj', llunich. 



Text-fig. 1.'?. — LUhiithainnimn pcniUdum, Giimbol. Extei-niil nppearaiice. 

 Natural size. After Giiiiibel. 



Lithothamnium perulatum, Giimbel. 



1871. Litliothamnimn perulatum., Giimbel, Abhaudl. k. Aknd. Wiss. 

 Miiuchen, vol. 11, p. 44, pi. ii, tigs. 11 a, 11 c. 



Thallns somewhat flat, spreading and irregularlj- encrusiing. 

 In section the cells are rectiingnlar ^ind lO^ixS ^; in diameter. 



