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

148 MOLLUSCA.
Cratena bylyia, lonyibursa, and ? lugubris, spp. nn., Bergh in Semper's
Reisen, ii. pp. 4-9, pi 1. fig. 2, pi. 3. figs. 16, 17, and pi 4. figs, 1-28, Philippines.
(On the genus Cratena, see Zool. Rec. iv. p. 555.)
Flabellina, Cuv., redescribed by R. Bergh. Rhinophoria perfoliata. Tentacula
elongata. Papillae dorsales pedamentis compressis impositse, eradiantes.
Pes angulis anterioribus tentaculatim productis. Mandibular margine
minutim denticulato. Radula dentibus uniseriatis. To this genus
belong three Mediterranean species, affinis (Gmel), peregvina (Gmel), and
fiabellum (VtSrany), and a fourth from the Philippines, Fl. sempevi, sp. n., the
anatomy of which is also given by R. Bergh in Semper's Reisen, pp. 18-30,
pi 2 and pi. 3. figs. 1-15.
AZolis (Flabellina) bostoniensis, Couthouy, rufibranchialis, Johnst., pilata,
sp. n., and stellata, Stimps., Gould, Invert. Mass. 2nd edit. pp. 241-245, p! 19.
figs. 270-282, Massachusetts.
Ccecinella, gen. nov. Rhinophoria vagina instructa. Papillae dorsales uniseriatss;
postice ad radicem caudaa insuper appendices claviformes adsunt.
Bursas cnidophoraa nulla?. Radtda dentibus uniseriatis. Mandibular adsunt.
C. luctuosa, sp. n., Bergh, /. c. p. 12, pi 1. fig. 1, and pi 5. figs. 1-19, Philippines.
JEolis (Cavolina) picta, Alder and Hancock, diversa, Couthouy, Gould,
Invert. Mass. 2nd edit. pp. 246, 247, pi 19. figs. 282 and 267, 268, 276, 280,
Massachusetts.
A£olis (Tergipes) despecta, Johnst., and gymnota, Couthouy, Gould, Invert.
Mass. 2nd edit. pp. 248, 249, pi. 16. figs. 222-225 and 238-241, Boston.
Colli opcea? fuscata, sp. n., Gould, ibid. p. 250, pi 16. figs. 218-221,Boston.
Embletonia fuscata and vemigata, spp. nn., Gould, ibid. pp. 251, 252, pi 16.
figs, 22'.)-232 and 214-217, Boston.
Phgtlobraiichus prasinus, sp. n., Bergh, I. c. pi. 1. figs. 6-8, Philippines.
Ci/erce, gen. nov., indicated from drawings made by C. Semper in tho
Philippine Islands, representing two species, clcgans and nigra, Semper, I. c.
pi. 1. figs. 9 and 10.
HERM^IDJE.
Hcrineeii cruciata, sp. n., Alex. Agassi/, MS., Gould, Invert. Mass. 2nd
edit. p. 253, pi. 17. fig. 250, Naushon Island, Massachusetts.
Hi-rmeeojtsis, gen. nov., variopincta [-icta], sp. n., Costa, Ann. Mus.
Nap. iii. 1800, with figures, Naples.
Hero formosa (Loveh), from Christianiafjord, described by Sars, Bidr.
Christ, fauna, p. 81.
Alderia harvardiensis, Agassi/, Gould, Invert. Mass. p. 254, pi. 16. figs. 220-
228, Cambridge, Massachusetts.
Beccaria, gen. nov., allied to Her mem and Cal/iopcea.—B. tricolor, sp. n.,
S. Trinchese, Ann. Mus. di Stor. nat. Genova, Dec. 1870, pp. 47-54, pis. 4-7,
Genova.
ELYSIID^E.
Elysia albomarginata and viridissima, sp. n., not yet described, from Genoa.
S. Trinche.-e, Bull. mal. Ital. iii. p. 31.
Elysia chlovotica, sp. n., Agassiz, MS., Gould, Invert. Mass. 2nd edit.
p. 250, pi 17. figs. 251-255, Cambridge, Massachusetts.