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

176 MOLLUSCA.
Margaritana margaritifera (L.), in the streamlets of the Voigtland, is the
subject of a paper written by C. F. Semmler, Mittheil voigtl. Ver. Naturk.
ii. 1870, p. 19.—M. arcuata (Barnes) defended as specifically distinct from
the European margaritifera, L., by Gould, Invert. Mass. p. 176.
Alasmodonta penchinati and berlani, spp. nn., Bourguignat, Ann. Mal. p. 37,
mouths of the Danube.
Anodonta. The embryonal shell is not lost but still to be
seen in younger specimens, the umbones of which are not yet
decorticated. Kobelt, Nachr. mal. Ges. ii. p. 149, and Zool.
Gart. 1870, p. 172.
Anodon. Sowerby concludes, in Reeve's ConchologiaIconica,the monograph
of this genus, with pis. 25-37. figs. 96-154. The apparently new species
are :—A. glabrus [-er or Anodonta glabra], Val. ?, pi. 25. fig. 97, locality unknown
; tvicostatus, pi. 25. fig. 98, China; rio-platensis, pi 26. fig. 101, Rio
Plata; pholadiformis, pi. 27. fig. 106, Montreal; subgibbosus, Anthony, MS.,
pi 27. fig. 107, Michigan; quadviplicatus, pi 28. fig. 40, Potomac; oleoma,
Gould, MS., United States, pi. 20. fig. 115; vignonanus, Bernardi, MS.,
pi 29. fig. 116, Gaboon; cumiugii, Lea, MS., pi. 30. fig. 122, Malacca;
bvevis, pi. 30. fig. 124, Rio Plata; cochleavis, pi. 33. fig. 135, locality unknown
; schombuvgianus [gk], pi. 34. fig. 137, British Guiana.
Anodonta kicked, sp. n., with var. interrogationis [!], and A. fallax, sp. n.,
Colbeau, Ann. mal. Belg. iii. (1868) p. 107 j pi. 3. figs. 1-3, Belgium. [The
first may be safely united with piscinalis, Nilss.]
Anodonta benacensis, Villa, and A. leprosa, Parr., maintained as distinct
species peculiar to Lake Garda. Betta, Moll. prov. Veron. pp. 136, 137.
MYTILIDJE.
Mytilus edulis, L., very common in the estuaries of East Friesland,
spawning in the months of April and May. The young
arc found living and growing on spots which are covered by
water for only three or four hours in the day. This species is
not much esteemed as food by the inhabitants. Metzger, JB.
(les. Hannov. p. 29.
The breeding of Mytilus edulis, L., has been attended to in
Northern Germany in the first half of the year 1870. The
circular of the " Deutscher Fischerei-Verein," no. 3, pp. 10-18,
and especially the pamphlet which Prof. K. MOBIUS has been
induced by that Society to publish, contain useful information
on this subject. The latter comes to the conclusion that the
breeding of the mussel may be much improved in the Baltic
and in the North or German Sea by floating hurdles on which
the young mussels may fix themselves. The same subject is
treated by F. C. NOLL, with general remarks on the consumption,
and special reference to Mcibius's paper, Zool. Gart. 1870, pp.
285-290. Some particulars concerning the actual culture of
this mollusk in Kiel by MOBIUS, Zool. Gart. 1870, p. 126.
In North America Mytilus edulis is not used as food by man. Gould, Invert.
Ma,,, p. 185.