48 



from St. Vincent's Gulf." The new locality for tliis species 

 will be interesting to conchologists. 



RECENT BASALTIC TUFFS. 



Basaltic tuffs, similar to the tuffs at Breadalbane, occur in 

 the neighbourhood of the Samphar Eivulet, Badger's Corner^ 

 The beds are in some places stratified ; and in them, and 

 strewed along the shore, occur numerous trunks of fossil 

 wood in a silicious state. The structure shows it to be some- 

 what allied to certain trees found by me in the lignite of 

 Breadalbane. It certainly has no relation to the Pine family.. 

 Probably it may be allied to Casuarina, the structure of 

 which it closely resembles. 



TURRITELLA LIMESTONE. 



Near to the Patriarchs, on Flinders' Island, at a ]3lace 

 called the " Heathy Valley," occurs a limestone of which, 

 through the kindness of Mr. Peter Gardiner, I have obtained 

 some specimens, together with interesting particulars as 

 regards distribution. 



The limestone is entirely comjjosed of the remains of shells. 

 Prom their general aj^pearance I judged, at the first glance, 

 that they belonged to our wide-spread tertiary system ; and 

 I was confirmed in this suijposition by the discovery, among 

 the specimens, of the well-known forms — Cucullea (Pectuncu- 

 lus) cainozoica (Tenison- Woods), and NucuJa hmiida — so 

 abundant in the Table Cape beds. The majority of the 

 shells, however, present a different facies to those found at 

 Table Cape, and the deposit will require to be carefully 

 ■examined before we can determine its exact position in the 

 tertiary series. The characteristic shells are : — A small 

 species of TnrriteUa, of the T. Warhurtonii type ; and a small 

 nacreous turritella-like shell, of about 10 whorls spirally 

 grooved, four grooves on each uniformly convex whorl. 

 This last shell may yet be classed among the Ehnchus group, 

 to which, I think, it has some affinity. I have described 

 these two S2)ecies in a separate note, and I send specimens 

 with this paj^er. 



On nearly all the beaches of the various islands I have 

 picked up waterworn pieces of fossil limestone, which may 

 yet prove to be associated with the TnrriteUa Limestone. The 

 waterworn fragments washed ashore on Swan Island, from 

 the sea bottom in the immediate neighbourhood, are very 

 numerous. I infer that the kelp adheres to them, and durmg 

 stormy weather they are by this means drifted on the beach. 

 On breaking open some fragments on Swan Island I detected 

 Trivia europea, together with one or two forms common to 

 the Table Cape beds. It is remarkable, however, that in all 



