SMITH : NOTE ON BURSA (TUTUFA) RUBETA. 229 



Schumacher (1817) in founding his genus Bufonaria included two 

 very different forms, namely spinosa Schumacher and scrobicidator 

 (Linn). 



The former (=j://;;^^rt Lamarck, 1822) however was selected by 

 Jousseaume as the type, and the latter he placed in his genus Tutufa. 



On the other hand the Miirex scrobicidator Linn, has been selected 

 by Dr. Dall^ as the type of Bufonaria^ but since Jousseaume had al- 

 ready chosen the type and given the name Tutufa to T. lainpas, auct. 

 which certainly belongs to the same group as M. sc7^obtcuIator, I think 

 it would have been better if Dr. Dall had used that subgeneric name 

 instead of Bufonaria^ already disposed of by Jousseaume. 



There seem to be three or four forms of Bursa rubeta which can be 

 distinguished. 



Var. r. Typical (fig. i). 



The first is that indicated in Lamarck's description", and figured in 

 the Encyclopedic Methodique^, also by Wood'*, Blainville'^ and Lister". 



This form may be known by the bright red mouth, the much 

 wrinkled columella, the widely expanded labrum bearing twelve 

 whitish subtubercular lirse, and a second series of liri^ within the 

 aperture corresponding to those on the labrum, but separated from 

 them by a narrow smooth interval. The largest specimen! have 

 seen is only no mm. in length, and I have no reason to suppose that 

 Jt ever greatly exceeds this size. 



Hab. — Timor, Goram I., Tonga Is., Port Natal (Brit. Mus.), Islands 

 of Ticao and Luzon, Philippines (Cuming), New Caledonia 

 (Jousseaume). 



The description of the hitherto unfigured Tutufa cakdonensis (fig. 2.) 

 seemed to agree so closely in many respects with the Triton lanipas, 

 auct. that I applied to Dr. Jousseaume for the loan of a specimen for 

 examination. He very kindly sent me one of the two examples still 

 in his possession, and now I have no hesitation in pronouncing it the 

 same as the var. i with the thin expansion of the labrum undeveloped. 

 At this stage of growth, just after the labral varix has been completed, 

 and the thin expansion commenced, the dark brown denticles on the 

 edge are apparent. With the growth of the expansion they become 

 covered, but their position is still indicated by a slight tubercular 

 prominence on the ridges which run from the 12 lirse to the margin of 

 the expanded lip. 



1 Smithsonian, Miscel. Coll., vol. xlvii.,p. 119(1905). 



2 Anim. sans Vert. vol. vii., p. 180 (1822). 



3 Ency. Method, pi. 420, figs. 3a — b. 



4 Index Test. pi. xxv. , fig. 28. 



5 Manuel Malacol. pi. xviii., figs, i, la, 



6 Hist. Conch, pi. 1023. 



