148 



characters belonging to a Terabratulma. It bears some resem- 

 blance to my T. triangularis. 



Mr. Etheridge, 1. cit., January, 187G, writes : — " When 

 originally described, W. Garibaldiana was supposed to bave 

 come from the Tertiary beds of Malta ; but Mr. Davidson 

 afterwards satisfied bimself that it in reality came from Mount 

 Gambier. Tbe nature of tbe matrix filling tbe valves bears 

 out tbis view, for it agrees exactly in lifbological character 

 with that adhering to authenticated specimens from the same 

 locality." One would think from this that all doubt as to the 

 habitat of the species was set at rest. But not so Mr. Davidson 

 supplies a note to Mr. Woods (Trans. Eoy. Soc, N.S.W., 

 p. 78, 1878), to the effect that the Tasmanian shell referred 

 to under the name of W. imbricata, nobis, W. macropora, 

 McCoy, M.S., " is a new but allied species, and has also a little 

 resemblance to my W. Garibaldiana, although I think not the 

 same species." Prof. McCoy says of it, however : — "I do not 

 know how it can be separated from Davidson's W. Garibal- 

 diana." Nevertheless, Prof. McCoy remarks in an appendix to 

 his description of W. macropora : — " I should have thought 

 Mr. Davidson's W. Garibaldicma identical with this species, 

 but in a letter I have seen from him to the Rev. Mr. Tenison 

 Woods — [referred to above] — he thinks differently." I 

 think it not improbable that Prof. McCoy has mi sinter jtreted 

 Mr. Davidson's remarks, which bear solely upon the possible 

 separation of the Tasmanian shell from W. Garibaldiana, and 

 do not necessarily imply that the type of the species is not 

 Australian. As Mr. Davidson observes, " the subpentahedral 

 elongated shape — [of the Tasmanian shell] — is remarkable ;" 

 but it can be matched with examples from the Paver Murray 

 cliffs, and is nothing more than one of the forms of this 

 variable species. 



The publication of Davidson's name has priority over that of 

 W. imbricata, whilst the latter antedates that of W. micropora 

 by several years. 



Locality and Horizon.— -Upper Murravian, near Morgan, and 

 Muddy Creek, Hamilton ; rare and of stunted growth. (Tate.) 



Middle Murravian, River Murray cliffs, ]S"orth-west Bend, 

 Blanchetown, &c. (Sturt, Tate, &c.) 



Lower Murravian, River Murray cliffs at Mannum ; on the 

 River Bremer, three miles south from Callington ; rare. (Tate.) 



Mount G-ambier (Woods) ; between Mount Eliza and Mount 

 Martha (McCoy) ; Table Cape, Tasmania (R. M. Johnston.) 



Waldheimia furcata, spec. nov. Plate vii., figs. 2a — 2b. 



Shell obscurely pentagonal, inflated ; valves about equally 

 convex, ornamented with sub-acute ribs, which commence from 



