382 Zoological Society. 



2. On the Animal of Liotia ; with descriptions of new 



SPECIES OF DeLPHINULA AND LlOTXA, FROM THE CuMING- 



lAN Collection. By Arthur Adams, R.N., F.L.S. etc. 



An examination of the animal of Liotia Peronii tends to confirm 

 the generic importance of a small group hitherto confounded with 

 Cyclostrema and Delphinula, but which had been justly recognised 

 by Mr. Gray under the name of Liotia. The shell is known by its 

 thickened peritreme ; the operculum is peculiar, and the habits are 

 peculiar in living at considerable depths, while Delphinula proper are 

 chiefly littoral. In Liotia the head is proboscidiform, the tentacles 

 subulate, the eyes on conspicuous peduncles at their outer bases ; 

 there are no intertentacular lobes, but a conical lobe on each side of 

 the head external to the eye-peduncles ; the lateral membrane of the 

 foot is undulated, and furnished posteriorly with three cirrhi. 



The operculum is arctispiral, the volutions being very narrow, nu- 

 merous, and covered with a calcareous deposit, which is articulated 

 at regular intervals, giving the upper surface of the operculum a tes- 

 sellated appearance ; the periphery is ornamented with radiating, 

 horny fibres. 



Liotia pulcherrima, Adams. L. testd subdiscoided; spird ele- 

 vatiusculd, anfractihus rotundatis, liris transversis et longitu- 

 dinalibus elegantissimh cancellatd, liris transversis muricatis ; 

 labro expanse, duplicato, radiatim fimbriato ; umbilico per- 

 amplo, crenulato. 



Hab. Cape of Good Hope. (Mus. Cuming.) 



Liotia affinis, Adams. L. testd globosd ; spird subprominuld, 

 anfractihus rotundatis, transversim elevato-striatis, costis vari- 

 ciformibus longitudinalibus, distantibus, angulatis, mucronatis ; 

 anfractuum parte inferiori serie unicd foraminum ; labro ex- 

 panso ; umbilico patulo, crenulato. 



Hab. Australia. (Mus. Cuming.) 



A species partaking of the characters of L. scalarioides and L. va- 

 ricosa of Reeve, but which can be referred to neither. 



Liotia duplicata, Adams. L. testd orbiculari ; spird de- 

 pressd, anfractihus transversim et longitudinaliter costatis ; 

 costis transversis duabus, tuhercidatis ; anfractuum parte in- 

 feriori pland ; umbilico amplo, perspective, cremdato. 



Hab. Cagayan, province of Misamis, Isle of Mindanao, Philip- 

 pines. (Mus. Cuming.) 



Liotia nodulosa, A. Adams. L. testd orbiculato-depressd ; 

 spird complanatd, transversim striatd, ultimo anfractu costis 

 transversis duabus in medio pimcto sulcatis et nodulis magnis 

 subdistantibus instructis, infra serie punctorum circa regionem 

 umbilicalem; aperturd orbiculari, peristojnate reflexo puncto 

 fimbriato, umbilico patulo margine crenulato. 



Hab. in insulis Philippinis. (Mus. Cuming.) 



Delphinula coronata, Adams. . D. testd subdiscoided, albd, 

 nigro lineatd ; anfractihus rotundatis, supra, spinis squamae- 



