MOLLENDOEFF : NEW SHELLS FKOM NEW GUINEA. 239 



Belongs to the group of C. guttatus, Pfr., Pseudonjclophorus, MlldfF., 

 wliich ranges from the Philippine Islands to the Moluccas and New 

 Guinea ; the new species is easily distinguished from its congeners by 

 its depressed form and channelled suture. 



15. Adelomorpha -l^tx, n.sp. PI. XV. Figs. 9 and Qa. 



Testa anguste perforata, sat elate turbinata, solidula, subpellucida, 

 transverse tenuiter striatula, lineis spiralibus microscopicis decussatula, 

 opaca, comeo-fulva ; spira regulariter conica apice obtusulo. Anfr. 

 6 convexi, ad suturam profunde impressam paullum applanati, ultimus 

 non descendens. Apertura parum obliqua, subcircularis, peristoma 

 vix expansum, intus sublabiatum, marginibus callo crasso continuis, 

 columellari superne paullum sinuato turn reflexiusculo, paullulum 

 dilatato. Operculum extus sat concavum anfr. A^. Diam. 6' 5, 

 alt. 7-25 mm. 



Hah. — Prope Constantinhafen, leg. cl. I. Kubary. 



The name Adelomorplia was given by Tapparone-Canefri ^ to a 

 group of small operculate shells more or less related to Cychstoma 

 NovfB-Hibernice, Quoy and Gaim., which he considered to be a section 

 of CycloUts, and which would correspond to von Martens' group of 

 Cycloti liratuli. Martens has, however, already proved - that the 

 radula of C. Novce-IIihernicR resembles those of the Cyclostoraidae, and 

 not those of the Cyclotidfe or the Cyclophoridae. This observation 

 has been confirmed by Thiele,^ who found the radula of this same 

 species to be similar to that of Omphalotrojjis, and proposed the new 

 generic name Pseudocyclotus without any description. Under these 

 circumstances we shall have to accept the older name Adelomorpha, 

 Tapp.-Can., as a genus of the Realiidae. The species hitherto known 

 are : — 



A. Nov(e-Hibern{<p, Quoy and Gaim. New Ireland. 



A. levts, Pfr. Solomon Islands. 



A. tristis, Tapp.-Can. New Guinea, 



A. lata, Mlldff. „ „ 



A. rugateUa, Tap. -Can. ,, ,, 



A. acantJioderma, ,, ,, ,, 



A. tunicata, ,, ,, ,, 



A. liratula, v. Mart. Moluccas. 



A. hicarinata, ,, ,, 



A. carinulata, ,, ,, 



Both A. tristis and A. Iceta differ fi'om A. Nova-Hiler^iicB in the 

 last whorl not being amplified (" campanulated") at the aperture, 

 and the peristome hardly expanded at all ; the columellar margin is 

 strongly dilated in A. Novoi-IIibermce, with a free lamella reaching 

 into the umbilicus; in A. lad a it is much less developed; whilst it 

 is entirely wanting in A. tristis. In size the new species is about 



1 Ann. Mus. Civ. Geneva, 2nd ser. iv. 1886, p. 165. 



2 Mon. Ber. Berlin Akad. 1877, p. 263. 



3 Nachr. Bl. deutsch. Malak. Gesel. 1894, p. 23. 



