28 ZOOLOGY OF THE VOYAGE OP THE SULPHUR. 



M. Deshayes for the erection of the genus, but we regret to find him deviating 

 from his original designation for one less classical. The earliest and best is here 

 adopted. Few species, however, were for some time known, and no one was dis- 

 posed to receive it, or add to the number of species. It was in this state when 

 the shells of the Sulphur came under examination ; and finding so many elegant 

 species in this collection, the generic importance of the group became consi- 

 derably increased. And at the same time, I became sensible that the characters 

 of the group required some alteration. These changes, with the descriptions of 

 twenty-nine species, were published in the eleventh volume of the Annals of 

 Natural History ; two more I have since described in the Proceedings of the 

 Zoological Society ; and these, together with a few others previously known, will 

 extend the genus to about forty species. 



1. Subgenus Ino. Hinds. 

 Testa cylindraceosubulata, elongata, acuminata. 



107. Triphoris gigas, Hinds, Ann. Nat. Hist. vol. xi. p. 17, (Plate VIII. fig. I.) Testa valde 

 elongata; anfractibus 25-28 planulatis, quadriseriatim granulosis, serie inferiore paululum maxima, 

 ad basin granulorum punctatis. 



Inhab. New Guinea. From eighteen fathoms, on a muddy floor. 



108. Triphoris concors, Hinds, 1. c. p. 17, (Plate VIII. fig. 2.) Testa cylindracea; anfracti- 

 bus viginti-duo, triseriatim granulosis; serie media paululum minima; sutura. lineata; apertura 

 rotundata ; sinu laterali tubiformi. 



Inhab. Straits of Malacca. In eighteen fathoms, mud. 



109. Triphoris sculptus, Hinds, 1. c. p. 17, (Plate VIII. fig. 3.) Testli pallide rufente; an- 

 fractibus 15-18, biseriatim granoso-carinatis, medio lsevigatis, carina secondaria ; prope suturam 

 cannula monilifera; sinu laterali patulo. 



Inhab. Straits of Malacca. In twenty-three fathoms, mud. 



110. Triphoris vittatus, Hinds, 1. c. p. 17, (Plate VIII. fig. 4.) Testa laevigata, cornea; an- 

 fractibus 22-25, transversim lseviter sulcatis, medio fusco eleganter vittatis ; apertura subquadrata; 

 sinu laterali obsoleto. 



Inhab. Straits of Malacca. In twenty-three fathoms, mud. 



111. Triphoris bilix, Hinds, 1. c. p. 17, (Plate VIII. fig. 5.) Testa attenuata, pallida; an- 

 fractibus quindecem tricarinatis ; carina inferiore paululum maxima marmorata, media minima ; 

 apertura rotundata ; sinu laterali patulo. 



Inhab. Straits of Malacca. In twenty fathoms, mud. 



112. Triphoris cancellatus, Hinds, 1. c. p. 18, (Plate VIII. fig. 6.) Testa pallide rufente; 



