576 



the name of the wrinkled shell, and Flaxiphora costata, BL,. 

 as a synonym thereof. Whether the whole of the forms of 

 Plaxiphora found in Southern and Western Australia are all 

 referable to one very .variable species or not, must be left to 

 future investigation. For the present I purpose to include all 

 wrinkled forms from Victoria and Tasmania and westward 

 under the name of P. alhida, BL, with P. corisjyersa, Ad. and 

 Ang., as a subspecific name for the extremely sculptured form 

 which has its headquarters at Port Lincoln. Tlie unwrinkled 

 forms I would refer to P. glauca, Quoy et Gaini., of which the- 

 type is from Tasmania. 



Plaxijihora varipilosa, Blainville. Type (no locality). 

 This is a disarticulated specimen showing no sculpture and 

 is very smooth and polished. More rounded (except near the 

 beak, which is raised) than is the case with Australian repre- 

 sentatives of this genus. It is decorated with longitudinal 

 brown streaks, but has none of the typical markings that are- 

 so characteristic of Australian specimens ; it is evidently not 

 an Australian shell. 



Cr?/j)topk(r montanoi, Rochebrune. Type, in spirit, Is. 

 Soulon, Drs. Montano et Ray (Pilsbry gives locality as- 

 Leucon, Borneo), No. 74, 1880 (Bull. Soc. Philom., Paris,. 

 1881-82, p. 1901), is marked ''C. ocvlatys, Q. et G." This: 

 specimen is well preserved in spirit and is conspecific with a 

 specimen in my own collection which is also marked "C. 

 oculatus, Q. et G.," and is from I, Sula. Both these differ 

 from specimens marked "C. lai^vaeformis, (Blain.) Burrow,, 

 1815," in that the first three valves are circular and not oval,. 

 as is the case in the latter. In all other respects they seem 

 alike. We were not able bo find the type of C. oculatv^,. 

 Quoy et Gaim., so cannot say whether these two are con- 

 specific. 



Cryjitoplfix (criiptoconchu8) larvaeforniis, (Blain.) Bur- 

 row (Elem. of Conch., pp. 190, 191, t.' 28, f. 2, 3, 4, 1915). 

 I saw a card wdth old label, ''I. O. Lisse. Ch. laevisi, Lam. 

 Habite les Mers de la Novelle-Holland," determined later 

 as C . larvaeformis, Burrow. This specimen is similar to others^ 

 in the same collection from New Caledonia and Tonga Tabu. 

 I have noted that all these resemble my shell and Rochebruue's 

 morotanoi, except that in them valves 1 and 2 only are round 

 oval, whereas in the latter the three first valves are almost 

 circular. Tlie girdle spicules of all are very similar. 



Cry-ptoplax laviarchi, Rochebrune, from New Caledonia, 

 marked "co-type." This specimen appears to correspond with 

 C. larvaeformis, Burrow, in that the anterior valve is oval 

 and not circular, as in mondarim, Rochebr. 



