Bibliographical Notices. 161 



circumstances so unusual, and marks of approbation so exceptional, 

 that they cannot have failed to prove most gratifying to those whom 

 it was thus intended to honour. The publication of this work is 

 a credit to the naturalists of our country ; and if it should prove 

 that the number of really scientific workers and consequent pur- 

 chasers is insufficient to defray the expenses necessarily incurred in 

 the printing and publishing of an annual volume of this kind, then, 

 as we have before maintained, there can be no more proper appro- 

 priation of the funds of the British Association than the voting of 

 such a sum as shall enable the Record to be continued for the " ad- 

 vancement of science." 



The contributors this year remain as before, with one exception : 

 Mr. Spence Bate, who reported on the Crustacea, has resigned, and 

 Dr. Von Martens has become his successor. He has been a most 

 able and accurate analyser from the first, of that portion of 

 zoological literature which relates to the Mollusca ; and he appears 

 to have most carefully and conscientiously executed the additional 

 burden which has now been laid upon him. 



On a former occasion we extracted from the ' Record ' the short 

 resume of what had been written during the preceding year upon 

 that most interesting fact, the migration and extension of the bivalve 

 mollusk Dreissena polymorphs over Continental Europe. The pre- 

 sent volume contains further notes on the same subject, and with 

 these we conclude our brief notice of this volume, heartily wishing 

 the editors continued success in their most useful "labour of love." 



" Dreissena Jluviatilis (Pall.) [polymorphs] appeared in 1864 in the 

 Loire near Orleans and Tours, and recently at Nantes and in some 

 smaller streams of France, and in October 1865 in the Rhone near 

 Avignon. (J. Mabille, Journ. Conch, xv. pp. 108-110.) P. Fischer adds 

 some other particulars, referring its appearance in the Departement du 

 Nord to the year 1838, in the Scarpe and Canal de la Deule to 1844, 

 in the Rhone to 1856 [?], and in the Garonne to 1866. The same 

 Dreissena, polymorphs has been observed in the kingdom of Wiirtem- 

 berg, in the river Neckar at Heilbronn, by M. Drauitz, in the spring 

 of 1867. Wiirtemb. naturwiss. Jahreshefte (1868) vol. xxiv. p. 44. 

 0. A. L. Morch persists in doubting whether this mollusk had not 

 been living in Germany before 1820, regarding Sander's note (see 

 Record for 1865, p. 217) as a sufficient proof (Ann. & Mag. Nat. 

 Hist. Feb. 1867, xix. pp. 82-84)." 



Annuario clella Societa dei Naturalisti in Modem. Modena, 1868, 

 8vo, pp. 206, pis. 7. 



The third volume of this work has just reached this country. It 

 contains the following papers : — 



L. Gambari. — Description of the Quartz of Porretta. 



C. Rondani. — Larva and Parasite of Tiseheria complanella. — 

 Diptera collected in South America by Prof. P. Strobel in the years 

 1866, 1867. 



Ann. & Mag. N. Hist. Ser.4. Vol Hi. 11 



