ISO 
Family Bellerop ii ontidje. 
Genus Bellerophon, De Montfort , 1808. 
(Conch. Systematique, I., p. 51.) 
Bellerophon cresswelli, sp. uov. 
(PI. xix., figs. 6-8.) 
Sp. Char . — Shell globular, but little compressed at the sides, 
carinate, the mouth expanded, more so transversely than vertically. 
Whorls five or six, the inner concealed by the body whorl, which 
expands rapidly. Mouth rhomboidal ; outer lip rather thickened 
above, increasing at the sides, the thickened edge rounded or 
bevelled slightly outwards ; inner lip much reflected, forming a 
deep callosity ; band raised and flattened, narrow, bordered by 
fine keels ; sinus long and narrow, rendering the outer lip slightly 
emarginate in the middle line ; umbilicus probably a little open. 
Sculpture of irregular, fine, transverse laminae of growth, but 
without spiral lines, and in consequence the surface unfenestrate. 
Obs . — A Bellerophon without specific name is recorded by Mr. 
Cresswell, and I find much pleasure, therefore, in associating his 
name with this shell. B. cresswelli resembles in general form 
and sculpture B. squamosus , Lindstrom,* * * § from the Wenlock rocks 
of Gotland, but differs from that species in the outline of the 
mouth, the lips less reflected, the sculpture is finer, and the 
surface unfenestrate. 
A MUCH-THICKENED VARIETY OF BUL1MUS BIVARF 
COSUS , GASKOIN, FROM LORD HOWE ISLAND. 
By R. Etheridge, June., 
(Palaeontologist to the Australian Museum, and Palaeontologist 
and Librarian, Dept, of Mines, Sydney.] 
(Plate xx.) 
In the general Zoology of Lord Howe Island,! I applied the 
varietal name solida to a peculiar form of Bulimus bivaricosus , 
Gaskoin, one of the most characteristic species in the land mol- 
luscan fauna of the island in question. In the living state, there 
are already known two well marked varieties Bulimus cunicul- 
insulce , Cox, J and B. etheridgei , Brazier, § the former being less in 
size, the latter with a much thinner shell than the species in chief. 
* Sil. Gastropoda and Pteropoda of Gotland, 1884, p. 78, t. 5, f. 17 - 24. 
f Lord Howe Island, Its Zoology, Geology, and Physical Characters, 
Mem. Austr. Mus., No. 2, 1889, p. 27. 
J Proc. Zool. Soc., 1872, p. 19, t. 4, f. 3. 
§ Lord Howe Island, loc. cit., t. 5, f. 1, 2, 7, 8. 
