f)'om New Guinea and the SAomon Islands. 425 



is not sufficient, I think, to warrant the erection of a new 

 genus for its reception. The front of the body- whorl above the 

 aperture is very sliglitly flattened, as in the species of Hyho- 

 ci/stis, which, however, are furnished with shelly opercula. 



As it was Mr. Brazier's wish that this shell should be dedi- 

 cated to the memory of his late wife, I have named it Mega- 

 lomastoma Brazierce ; however, should furtlier investigation 

 prove that the animal differs from that of Afegalomastoma, I 

 would propose that the name originally assigned to this species 

 by Mr. Brazier (although no description of it was then pub- 

 lished) should be retained. 



Helicina novo-guineensis. (PI. XV. figs. 11, 11 a.) 



Testa depresse trochiformis, acute cariuata, flavesceus, plus minus 

 rufo maculata et strigata vel flammulata, spiraliter lirata et sul- 

 cata, incrementique lineis sculpta ; anfract. o-5|, parum convexi- 

 usculi, ultimus supra et infra sequaliter convexiuscuhis, carinarn 

 infra liris tenuioribus concentricis ornatus, in medio callo albo 

 obtectus ; apertura subhorizontalis, triangularis, ad basim pone 

 columellam Ura parva ab margins divergeuti instructa ; peristoma 

 album, anguste expansum. Operculum utrinque purpureo-rubi- 

 dum, ad margiuem columellarem pallidum. 



Diam. max. 18 millim., min. 15 1^, alt. 12^. 



Var. Testa maxima (fig. 11 a). 



Diam. max. 25 milhm., min. 21, alt. 15. 



Hah. Foot of Owen Stanley Mountains. 



This species is well characterized by the spiral lirce, which 

 are much coarser on the upper surface than beneath. There 

 are about twelve upon the last whorl above the rather sharp 

 keel, and about twenty below. The ridge within the aperture, 

 which appears to act as a rest for the operculum, is rather 

 strongly developed. The ground-colour of this shell is 

 generally more or less yellowish ; a series of bright red spots 

 ornament the carina and the suture, and radiating lines and 

 undulating streaks occur both on the upper and under sur- 

 faces of most specimens. Some examples are more uniformly 

 yellow and have only faint traces of the red markings. 



Helicina solitaria. (PI. XV. fig. 10.) 



Testa parva, brevitcr conica, albida, zonis duabus (altera supra 

 medium anfract. ultimi altera infra) rufescontibus, plusvcmiiiusve 

 interruptia cincta ; anfract. 5, vix convcxiusculi, spiraliter striati, 

 ultimus ad peripheriam filo-carinatus, infra angulum convexus, 

 concentrice striatus, in medio callo tcnui albo indutus ; apertura 

 paulo obliqua, intus rubescens, basi circa columellam flavida ; 



