88 Moll 
MOLLUSCA. 
Addisonia , Dali, placed near Fissurella ; Tryon, (1) p. 107. 
Capulus includes as subgg. Metoptoma and Spiricella ; Tryon, (1) p. 106. 
Calyptrceidce divided into two subfamilies, Calyptrceince and Eipponycince , 
with genera Crucibulum , Calyptrcea , Crepidula , Capulus , Amathina, liip- 
ponyx , and Mitrularia , and several fossil genera ; Tryon, (1) p. 101; 
many of the species have very extensive synonymies. 
Calyptrcea includes the subgg. Galeropsis, Infundibulum, and Sigapatella] 
id. t. c. p. 103. 0. spirata , Nardo, see p. 47, supra. 
Trochatella simpsoni, n. sp., Honduras, Ancey, (9) p. 253. 
Xenoplwriclce contain the genera Xenophora (with subg. Eudoptygma), 
Eutrochus , Autodetus, and Clisospira ; Tryon, (1) p. 157. Crosse (J. de 
Conch, xxvi, p. 251) objects to the use of Onustus as a sectional name. 
Fam'/joro clathrata , Reel., several synonyms ; Tryon, (1) p. 68. Narica, 
Rod., preferablo as a generic name ; Crosso, J. do Conch, xxvi, p. 106. 
Lamellaria, Mont., includes Marsenia , Leach, Coriocella , Blv., Cheli- 
notus , Swains., Cryptocella , H. & A. Ad., Ermcea, Gray, and Cryptothyra , 
Menke : Chelynotus and Marsenina are adopted as subgg. ; Tryon, (1) 
p. 11. L. perspicua, L., var. Za/a, numerous synonyms given ; erf. Z. c. 
p. 60. L. wilsoni , n. sp., Port Phillip Bay, S. Australia, Smith (5). 
Morvillia grandis, n. sp., Jan Mayen, Beclier, p. 74, fig. 4. 
Velutina clerugata , n. sp., Jan Mayen, id. t. c. p. 74, fig. 3. V. conica f 
n. sp., Bering Sea, Dali, (3) p. 305, pi. iii, fig. 10. V. schneideri } n. sp., 
Tromso, Friele, p. 26, pi. xi, figs. 3 & 4. 
A detailed history and bibliography of the family are given by Bergh 
(1, 5, prelim, notice, 2), with an account of its anatomy, habits, and dis- 
tribution. It contains the following genera : — Marsenia (20 spp.), Chelyo- 
notus (4 sp.), Marseniella (1 sp.), Marseniopsis (2 spp.), Marsenina 
(6 spp.), and Onchicliopsis (2 spp.). They are arranged thus : — 
Xenophorid^. 
NAUICIDAd. 
Lamellariid^e. 
Marseniame, 
Plica expira- g 
tori a nulla g 5 
pars inferior vasis de- » Marsenia , Leach 
ferentis libera j Marseniella , Bgh. 
Plica expira- ■+» 3-1-3 H 
tori a 3 
testa interna calcarea ... Marseniopsis, Bgh. 
