476 Dr. P. P. Carpenter on new Forms of Mollusks 
gata, angustiore, Phasianelloidea; plerumque fusco creberrime 
punctata; umbilico parvo. Long. °22, long. spir. 11, lat. 15 poll., 
div. 50°. 
22. Hucosmia cyclostoma. 
E. testa parva, valde obtusa, lata, regulari, valvatoidea ; marginibus 
Spiree vix excurvatis; pallide cinerea, fusco-olivaceo dense punc- 
tata seu maculata ;. anfr. nucleosis pallidis, mamillatis; normali- 
bus iii., valde tumentibus, suturis valde impressis; apertura vix a 
pariete indentata ; umbilico magno, subspirali. Long. ‘05, long. 
spir. °025, lat. °05 poll., div. 90°. 
Curiously like a small depressed Valvata obtusa, but with the 
texture of Phasianella. 
Genus Hartococuiias*. 
Testa Colloniam simulans, sed haud margaritacea: apertura circu- 
laris, varicosa: columella haud callosa. 
The animal and operculum are unknown. Its affinities may 
be with Ethalia. 
23. Haplocochlias cyclophoreus. 
H. testa compacta, parva, solidiore ; albida, seu pallide aurantiaca ; 
anfr. v., rapide augentibus, suturis impressis ; tota superficie mi- 
nutissime spiraliter striolata, nitida; apertura rotundata ; peri- 
tremate continuo, incrassato, extus varicoso ; labio distincto ; axi 
t. jun. umbilicata, adultz lacunata. Long. "19, long. spir. 06, 
lat. *2 poll., div. 100°. 
When laid on its base, this shell resembles Helicina; but the 
mouth is more like Cyclophorus. The young shell is semi- 
transparent, and resembles a Vitrinella with thickened lip. 
24, Narica aperta. 
N. testa parva, inflata, tenui, alba; anfr. nucl.?....; norm. rapide 
augentibus, lirulis crebris spiralibus, i in spira hie et illic majori- 
bus, a striolis creberrimis radiantibus minutissime decussatis ; 
suturis valde impressis ; apertura subcirculari ; umbilico maximo, 
carinato, anfractus intus monstrante. Long. *28, long. spir. *08, 
lat. 3 poll., div. 110°. 
25. Fossarus parcipictus. 
F. testa parva, solidiore, spira plus minusve elevata; albida, rufo- 
fusco varie maculata; carinulis spiralibus acutioribus, quarum 
cire. vi. majores, striolisque crebris cincta ; anfr. ultimo tumidiore ; 
labro acuto, haud intus incrassato ; umbilico satis magno, ad mar- 
ginem carinato: operculo normali. Long. *24, long. spir. 06, 
lat. *2 poll., div. 90°. 
The few specimens found are very Re: in outline. 
* Th. dmdovs, unadorned ; koxAlas, snail. 
