286 DIAPHANA. 



Utriculopsis densistriata LECHE, Kongl. Sv. Vet. Akad. Hand!.,, 

 xvi, p. 74, pi. 1, f. 20, a, b, c (shell), f. 20 d (dentition), 1878.-- 

 Diaphana densistriata AURIVILLIUS, Vega Exped. Vetenskap. 

 lakttagelser, iv, p. 371. 



D. GLOBOSA Loven. PL 26, fig. 75. 



Shell very thin, vitreous, subglobose ; base obliquely rounded ; 

 vertex narrowly truncated, narrowly perforated, the spire nearly 

 concealed. Aperture as long as the shell, narrow and supine above, 

 expanded below; outer lip produced above the vertex and subangu- 

 late, obliquely arcuate below ; columella flexuous ; umbilicus dis- 

 tinct. Alt. 4 mill. (Sars). Scandinavia. 



Amphisphyra globosa LOVEN, Ind. Moll. Scand., p. 11 (Ofvv 

 Kongl. Vet. Akad., 1846, p. 143). Diaphana globosa SARS, MolL 

 Reg. Arct. Norv., p. 290, pi. 18, f. 4 (shell), f. 3 c (animal) ; pi. xi, 

 f. 12 (dentition). Utriculus globosus SOWB., Conch. Icon., xviii, . 

 2. Utrieulopsis vitrea M. SARS, Bidrag til Kundskab Christiania- 

 fjordens Fauna, ii, p. 65, pi. 11, f. 16-18 (shell only ; not f. 15, ani- 

 mal, which is Philine vitrea, q. v). 



D. HIEMALIS Couthouy. PL 59, fig. 28. 



Shell minute, globose, thin and fragile, subtranslucent, horn col- 

 ored ; body whorl very convex, widest in the middle, narrowly 

 truncated at the vertex, which shows a minute umbilical perfora- 

 tion. Aperture narrow above, rising well above the vertex, broad 

 below ; outer lip strongly sinuous, receding toward the upper inser- 

 tion, rising high above the vertex of the body of the shell ; colum- 

 ella long, thin, slightly sinuous, partially closing the narrow umbil- 

 icus. Alt. 2'}, diam. 2 mill. 



Maine to Massachusetts Bay ; Scandinavia. 



Bulla hiemalis COUTH., Bost. Journ. Nat. Hist., ii, p. 180, pi. 4, 

 f. 5. DEKAY, N. Y., Moll., p. 18, pi. 35, f. 335. OLD., Inv.Mass., 

 p. 163, f. 100. Diaphana hiemalis STIMPSON, Check-Lists, p. 4. 

 W. G. Binn. in Glds. Inv. Mass., p. 216, f. 506. SARS, Moll. Reg. 

 Arct. Norv., p. 291, pi. 18, f. 3. 



More globose than any of the preceding species. The figure is 

 drawn from a Massachusetts specimen. 



D. NIVEA Petterd. Un figured. 



Shell globose, very thin, semitransparent, milky-white, shining ; 

 whorls 4, spire small, scarcely projecting; longitudinally striated 



