lxxiii. 



species that have not come under his observation, whilst the 

 bulk of the additions is based upon material communicated to 

 him by Mr. Bednall and myself . The list contains the names 

 of fifty-four gasteropods, twenty conchifers, and one pal- 

 liobranch. 



Mr. Petterd describes, in Journal of Conchology, April, 1879, 

 seven new species of Tasmanian marine gasteropods, chiefly from 

 Bass Straits. 



Prof. Hutton, on the structure of Amphibola avellana 

 (Annals and Mag. Natural History, March, 1879). Though 

 the species, whose structure is, herein, so ably described, is not 

 a member of our fauna, yet as it is allied to two very common 

 forms of our maritime marshes and mud shores, the knowledge 

 of the animal must supply very important data for comparison 

 to those who occupy themselves with the physiology of our 

 molluscs. The anatomy of A. avellana was first studied by 

 Quoy and G-aimard, and published in the Zoology of the 

 Astrolabe, vol. ii., p. 196, t.lS, f.1-8. Those observers ascer- 

 tained it to be a pulmonif erous snail, with the pulmonary cavity 

 closed in front, and that the sexes are united in each individual. 

 Professor Hutton's researches have enabled him to correct 

 inaccuracies in several points communicated by the Prench 

 naturalists ; though corroborating their observations in the 

 foregoing particulars. The systematic position of the genus 

 has not been agreed upon by macalologists, and though Prof. 

 Hutton does not compare the anatomy of this snail with that 

 of other pulmonates, yet his very ample dissections will enable 

 the systematist to bring the genus into closer relationship with 

 those to which it is most nearly allied in structure. 



"Woodward (Eecent and Possil Moll., 1854) includes it in 

 the Family Paludinidas — a group of freshwater branchiferous 

 snails, to which AmjyMhola is related by the form of its shell 

 and operculum. Gray placed it amongst the true pulmonif era; 

 Binney (1865) classes it under Pulmonata, suborder Thalasso- 

 phila, which is characterised by " eyes sessile on the front part 

 of the frontal disk, formed by the expanded tentacles." Only 

 two families, Ampliibolida and. Siplwnariadco, are included. The 

 dentition of Amphibola indicates, as represented by Professor 

 Hutton, a nearer alliance to the inoperculate pulmonif era than 

 to the branchiferous snails. 



The carcinologist will find in the following recent papers 

 much information respecting the Crustacea inhabiting the 

 Australian seas. "With one exception, that of Micippe 

 parvirostris (Miers) obtained at Port Lincoln, all the species 

 referred to are not known to haunt our shores, though several 

 occur in contiguous waters : — 



"Eevision of the Hippidear By E. J. Miers (Journ. 

 Linnean Soc, xiv., p. 312, 1879;. 



