168 Frederick Ckaprnan: 



supported by the external form of the specimens, which is in 

 general agreement with other Miocene examples, of wliicli sonic of 

 the synonymy is given above. 



Rothpletz'^ gives the cell measurement of his examples of L. 

 ramosissimum as 20 x 14-16yLt, whilst the specimens from the Mallee 

 vary from about that proportion to 'W x \1 fi.. This amount of 

 variation in the cell measurement can he found in a single branch 

 in our specimens, so that the dimensional character must be taken 

 with other factors, viz., the liabit of the branches and the form and 

 position on the thallus of the conceptacles, whether immersed, sub- 

 immersed, or prominent. 



There is little doubt that tlie encrusting layers of calcareous algae 

 found on some of the pebbles in the present borings are merely the 

 ■early stage of the above, or a closely allied species, as the cells agree 

 in form, and spread out fan-wise over tlie surface as in the basal 

 parts of a branching specimen. 



The above species is a peculiarly Miocene form. It constitutes 

 the bulk of the Leithakalk (Tortonian) of the Vienna Basin. In 

 Eastern Asia it accompanies Miocene forms of Lepidocycliyia, such 

 as have been recorded from Japan, Timor, New Guinea, Amboina, 

 Batu Island, Formosa and Riu Kiu. 



Distrihation.— Bore 3, 201-220 feet and 22G feet. Bore 4, 16:i- 

 170 feet. Bore 5, 163-175 feet (figd.), and 175-189 feet. Bore 10, 

 310-320 feet. Bore 11, 438-440 feet, and 457-458 feet. 



[In woi'king out the above details I have been assisted with 

 literature, and specimens of recent inatci-ial, through the kindness 

 of Mr. C. J. Gabriel.] 



LrrHoTHM.\NioN aff. lichenoidk.s, Ellis and SoUuider. 

 Millepora lichenoides^ Ellis and Solander, 1786, Nat. Hist. 



Zoophytes, p. 131, pi. xxiii., tig. 9. 

 LifJtofhaninion lichenoides. Ell. and Sol. s|). , Foslic. 19(MI, 

 Kongl. Norske Vidensk. Selsk. Skr. (Xo. 5), p. 14, No. 

 55. 

 In this form the branches ai-e flattened oi- f i()udo.><e, with the 

 conceptacles superficial. 



Distribution.— Bore 11. 457-458 feet. 



lirnioTiiAMNiON spp , iiidft. 

 Specimen a. — Bore No. 3. abour 226 feet, yielded two pebbles 

 partly foritied of an encrusting f/ifJiothdiiniion. 



1. Op. (it., ).. 3113. 



