634 THE VOYAGE OF H.M.S. CHALLENGER. 



April 17-18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 

 April 26, 1874. Port Jackson, Sydney. 4 to 18 fathoms. 



Habitat. — Java (Chemnitz) ; Sandwich Islands (British Museum and Pease) ; Japan 

 (Reeve) ; Port Jackson (Angas) ; Mauritius, Polynesia (v. Martens). 



I have no doubt that the Challenger specimens agree with shells marked Aplustrum scabrum, 

 Chem., in the British Museum, and that Aplustrwm lautum (Pease), there, is also the species of 

 Chemnitz. I have therefore without hesitation quoted Mr Angas' Bullina lineata from Port 

 Jackson, which he identifies with the species of Pease and doubtfully with that of Chemnitz. 

 Whether he is right in regarding his shells as really the Bulla lineata, Wood, I cannot say, and 

 I have therefore forborne to quote that author (Ind. Test., p. 209, Suppl. pi. iii. sp. 1). My own 

 impression, however, is that Mr Angas is right, and, further, that the Bullina undata of Adams, 

 Genera, vol. ii. p. 8, " Shell " pi. lvi. fig. 5. a. (which, both in letterpress and in the explanation of 

 the plate, has got sadly mixed up with a Bullina undata, ascribed by Adams to Chiaje's Poli, 

 vol. iii. pi. xlvi. fig. 29, where no such species exists), is also this same species. Whether the 

 Bulla undata, Hrug.= Bullina elegans, Menke, is really distinct from Bulla scabra, Chem., as 

 Deshayes maintains, is of course a totally different question, on which, not having Bruguiere's 

 species within reach, I offer no opinion. The Bulla scabra, Miiller, to which Deshayes (Anim. s. 

 vert., 2d ed., vol. vii. p. 677), refers, is, of course, the Bhiline of that name. 



Mr Angas (loc. cit. supra) says that this species of Chemnitz has the operculum of an Actceon. 



3. Ringicula, Deshayes, 1858. 

 Species. 



1. Ringicula dollar is, Gould. 3. Ringicula assularum, Wats. J 



2. Ringicula pusilla, Wats. 4. Ringicula peracuta, Wats." 



1. Ringicula doliaris, Gould (PL XL VII. fig. 8). 



Ringicula doliaris, Gould, Proc. Boston Soc, 1860, vol. vii. p. 324. 

 Gould, Otia, 1862, p. 121. 

 „ „ Morelet, Journ. de conch., 1878, voLixxvi. p. 126. 



„ ,, Dunker, Index Moll. Mar. Japon., p. 58. 



April 17-18, 1874. Port Jackson, Sydney. 2 to 10 fathoms. 

 April 23, 1874. Port Jackson, Sydney. 6 to 15 fathoms. 



Habitat. — Japan. 



Gould observes that this species is peculiar from its thin lip and general want of callus. The 

 Challenger shells are somewhat less tumid than the British Museum specimens, want the round 

 swollen shoulder below the suture, the upper whorls, too, are flatter, and the spire is rather higher ; 

 in all these respects, however, the species presents considerable range of variation, and I believe may 

 fairly admit the Challenger specimens. The Marquis de Folin, who has a large acquaintance with 

 this genus, kindly examined all the Challenger specimens for me, and I regret that he does not share 

 my opinion regarding the shells under consideration here, which he holds to represent a new species. 



