"^'iSi!^,i:t" ^MMm in the Uni.

136
MOLLUSCA.
names in Reeve's monograph; Krister's descriptions and synonymy, however,
are more copious.
CYPRJEIDJE.
Cyprcea. The monograph of this genus contained in Sowerby's ' Thesaurus
Conchylioruni,' parts xxvi.-xxviii., contains, in 58 pages and 31 plates, descriptions
and figures of 187 species, the latter of natural size. The genus is
taken hy the author in the old Linna?an sense, Trivia being made a subgenus;
and there are besides seven subdivisions of Cypveea proper and two of Trivia
adopted. Numerous notes, which serve chiefly to point out the distinction of
closely allied species, are added to the descriptions.
It is severely criticised by H. Crosse, J. de Conch, xviii. pp. 254-260,
where also several particulars concerning varieties or monstrosities of known
species will be found.
Cyprcea macandvei, sp. n., Sowerby, Thes. /. c. p. 52, pi. 37. f. 537, 538,
Red Sea, and C. castanea, Higgins, ibid. p. 32, pi. 29. f. 302, 303, Cape of
Good Hope.
Colpodaspis, gen. nov. Mich. Sars describes under this name a shell and
its animal, found in the Christiania fjord at 14-80 fathoms, Bidr. Christian.
Faun. pp. 70-74, pi 11. figs. 1-6, which is probably, according to Jeffreys,
the young state of Cyprcea europcea, Mont., ibid, footnote p. 73.
Erato. Twenty recent species enumerated by Redfield, Am. J. Conch, vi.
Appendix, pp. 215-219.
NATICID.S.
Lunatia hei-os (Say). The living animal figured, egg-case described, Gould,
Invert. Mass. p. 339.
Colobocephalus, gen. nov. Testa subauriformis, tenuissima, submembranacea,
epidermide inconspicua aut nulla; spira parva, sutura profunda; apertura
amplissima, peristomate discontinuo; columella flexuosa; operculo
nullo. Animal non omnino in testam recondendum; velo capitis sinuato
siu-sum revoluto; tentaculis nullis; oculis 2 sessilibus in cervice, pede pedicellato,
solea magna, oblonga, postice truncata, subtus sulco longitudiuali
medio; pallio supra testam non revoluto.—C. costellatus, sp. n., Sars, Bidr.
Christian. Faun. pp. 54-57, pi. 11. figs. 7-14, Drobak and Vallo, near Christiania,
200-230 fathoms. The author compares it with the Bul/idee; Jeffreys
thinks it allied to Balius smithii (Brown) = Natica apcrta, Loven, ibid,
footnote.
PROBOSCIDIFERA PTENOGLOSSA.
SoLARIIDiE.
Solarium architee, Costa, distinct from S. fallaciosum, Tihen,=slvamiiu'iaii
Philippi, Jeffreys, Ann. N. II. (4) vi. p. 458.
Architea, gen. nov. Testa turbinata, parum elevata, infra late et prof undo
umbilicata; apertura rotundata, peristomate continuo, simplice. Operculum
corneum, pellucidum, spirale, extus planum, intus spira ad cenlrum parum
prominula.—A. catenulata, sp. n., Naples, Costa, Ann. Mus. Nap. iii. 1800,
with figures.
PROBOSCIDIFERA GYM NOG LOSS A.
PYRAMIDELLIDA'..
Pyramidella Iceviuscu/a, S. AYood, = p/icosa, Broun, which has priority,