PERISTEBNIA. 83 



in general appearance, my specimens show very constantly the 

 differential characters of the diagnosis. 



P. GRANATA, Koch. PI. 65. fig. 73. 



Whitish, covered by brown tubercles formed at the intersection 

 of the longitudinal and revolving sculpture; lip five-dentate 

 within ; columella with two obscure folds below. 



Length, 4 inches. 



Habitat unknown. 



Evidently a young shell. It was described as a Fusus, but is 

 either a Peristemia, in which case it may be a worn specimen of 

 a young P. gemmata, Reeve, or else it is a Ricinula, and then, 

 perhaps, = young of E. concatenata, Bl. 



P. CHLOROSTOMA, Sowb. PL 65 , figs. 75-82, 84, 91. 



Shell whitish or yellowish, with an interrupted chestnut or 

 chocolate central band, and the sutures and base of shell tinged 

 with the same colors. Length, '75-*85 inch. 



Sandwich Islands ; New Zealand ; Philippines ; Andaman Isles. 



The earliest description, by Sowerby, gives no figure nor 

 locality, but is sufficiently distinctive for certain identification. 

 P. chlorostoma, Nuttall, and P. xanthostoma, Nuttall, are both 

 unpublished names, but widely circulated. P. crocea, Gray, was 

 likewise published without a figure, but fourteen years later. 

 To these are to be added the subsequent names of P. Newcombi 

 and P. stigmataria, A. Ad., P. scabrosa, Reeve, P. solida, Reeve. 

 P. scabrosa, Reeve (fig. 78), said to come from Tonga Taboo 

 (by Dunker), does not offer any distinctive characters except the 

 absence of the spots, and these are present in a form (fig. 79) 

 figured by Dunker as var. gracilior. The brown coloring is 

 entirely absent in some Sandwich Island specimens before me. 



P. crenulata, Kiener,* (fig. 80), is evidently the same species. 

 Reeve has misconceived it, and figured for it an entirely different 

 shell (P. Wagneri, Anton), as pointed out by Mr. Tapparone- 

 Canefri, who reports the species from the Aru Islands. P. Wag- 

 neri, Anton, var. Samoensis, as figured by Kiister (fig. 82), is also 

 identical, whilst the P. craticulata, Wagner (not Gmelin), for 

 which Anton proposed his name Wagneri, is another species. 



* Craticulata by error on his plate. 



