i 



138 ADDITIONS TO THE LIST OF TASMANIA^ FOSSILS. 



to ; but after careful comparison I was enabled to account for 

 young and adult forms, and to mark individual variation ; and 

 finally I could, with some degree of confidence, select the most 

 typical of each group. By this means I have reduced a large 

 number of variable specimens to six species, all of which I have 

 been able, with some degree of confidence, to refer to types of 

 well-known fossils occurring with many of their associates in 

 rocks of the same age in Europe. Fairly good photographs 

 have been taken of these, and the following are the determina- 

 4^ tions which I have been able to arrive at. 



Tasmanian Beachiopods. 

 Figs. 1, 4. Spirifera striata Martin Huon Eoad 



„ 2, 7. laminosa M'Coy „ 



» ^'S- ■ ""'"'l^^l , ] I dec. Sow. „ ' 



var. octoplicata ) ' 



„ 9,10,12. duplicostata „ ^j) 



„ 5, 6. alata ScJil. ,, 



„ 11. • triangularis Martin „ 



„ 14, 15. vespertilio G. Sow. „ 



„ 18. Leptsena sp. „ 



„ 16. Pachydomus sp. lfefk%v 



„ 17. Ditto „' 



„ 19. Stenopora ovata Lons ,, 



As the descriptions of the same species taken from Davidson's 

 " British Carboniferous Bracliiopoda " answer closely to local 

 forms, I have appended descriptive extracts from this eminent 

 authority, for the convenience of local students. 



Figures of local forms are taken from select types by photo- 

 graphy. I have also to announce the discoveiy of LopliophyUum 

 corniculiim, de Konwick. Collected by Capt. Beddome in the 

 mudstone beds near Fingal. 



Desceiption of Species Occueeing in Eueopean Eocks. 

 AccoEDiNG TO T. Dayidson, P.E.S. 



Spirifera striata, Martin. 



A very large and variably shaped shell, transversely semi- 

 circular, or sub-rhomboidal ; valves almost equally convex. 

 In the dorsal valve the mesial fold is of moderate elevation, 

 ■while the sinus in the opposite one is both variable in its width 

 and depth. The hinge-line is either a little shorter, or as long 

 as the greatest width of the shell, the cardinal angles being more 

 or less rounded in adult individuals. The area is of moderate 

 width, with sub-parallel sides ; fissure triangular, and partially 



