Miscellanea. 319 



than the width, and the latter moderately large), in addition to a 

 reticulated surface and parallel dental lamellce. Is this really distinct 

 from the Spirifera {Ret.) micro gemma. (Phil.) of the Devonian and 

 lower Irish carboniferous shales ? On comparison I scarcely think 

 it is. 



Rather rare in the schists of Dunvegan, and in the fine sandstone 

 forming the summit of a hill one mile south of Trevallyn, N. S. 

 Wales. 



Spirifera vespertilio (Sow.). 

 Not uncommon in the impure limestone of Black Head, N. S. 

 Wales, and abundant in the dark calcareous schists of Eagle 

 Hawk's-neck, Van Diemen's Land. 



Spirifera calcarata (Sow.). 

 I cannot in the slightest particular distinguish examples from 

 the sandy shales of Dunvegan, N. S. Wales, fi'om those so abundant 

 in Devonshire and in the lower carboniferous shales and sandstones 

 of Ireland. 



Spirifera avicula (Sow.). 

 Abundant in the sandstones of Korinda, also occasionally in the 

 limestone of Blackhead, N. S, Wales. 



Spirifera Do.rioinii (Mor.). 

 Common in the sandy schists of Loder's Creek and Barraba ; 

 more rare in the arenaceous limestone of Blackhead, N. S. Wales. 



Spirifera subradiata (Sow.). 

 Common in the sandstone of Muree, in the arenaceous limestone 

 of Blackhead, in the schists of Woollongong, and in the fine sand- 

 stones of Darlington, N. S. Wales. 



Spirifera subradiata ( ? var. resembling S. glabra). 

 Common in the sandstone of Maitland, and in the arenaceous 

 limestone of Irrawang, N. S. Wales. 



Spirifera attenuata (Sow.). 

 Specimens perfectly undistinguishable from the larger variety so 

 abundant in the lower carboniferous shales of Ireland (as at Hook 

 Point, CO. Wexford), are common in the arenaceous shales of Dun- 

 vegan, N. S. Wales. 



Spirifera Tasmaniensis (Mor.). 

 Common in the hardened schists of Lewin's Brook, N. S. Wales. 

 Spirifera lata (M'Coy). PI. XIII. fig. 7- 

 Sp. Char. Transversely rhomboidal, moderately gibbose, width 

 four times the length ; sides flattened, regularly attenuating to 

 the very acute cardinal angles ; cardinal area broad, flat ; mesial 

 fold wide, defined, angular, smooth ; about sixteen to eighteen 

 slightly convex, simple, smooth ribs on each side of the mesial 

 fold, becoming indistinct as they approach the carxlinal angles, 

 so as to leave nearly a third of the length of the sides smooth. 

 This difi"ers from the widest varieties of the ^. diajuncta (Sow.) 

 by its defined and smooth mesial hollow, extent of the smooth 

 space at the end of the sides, and the smaller number and greater 



