126 THE NAUTILUS. 



higher (as high as long, or nearly so), quite oblique ; the beaks are 

 very large; upper margin and hinge very strongly curved; color 

 pale greenish horn ; surface highly polished, with distinct, irregular 

 lines of growth. 



Known from Maine and New Jersey. It has been collected in 

 Partridge Lake, in the thoroughfare between Partridge and Long 

 Lakes, in Long Lake, Square Lake, all in Maine, with the dredge, 

 in various depths down to 25 feet, by Mr. Olof O. Nylander. Also 

 dredged in White Pond, N. J., by Messrs. Pilsbry and Rhoads, to- 

 gether with rather typical specimens of pauperculum and inter- 

 mediate forms. The upper margin and hinge are as strongly curved 

 as in Pis wquilaterale Pr. and some forms of P. compresmm Pr. The 

 beaks are so large as to make out almost the whole upper part of 

 the mussel. 



This Pisidium has been named after Mr. Ol. O. Nylander, who 

 has so assiduously collected both recent and fossil mollusca of north- 

 ern Maine. 



New Philadelphia, Ohio., Jan., 1898. 



PUBLICATIONS RECEIVED. 



CATALOGUE OF THE HATFIELD COLLECTION OF SHELLS FROM 

 THE LOYALTY ISLANDS, by James Cosmo Melvill and Robert 

 Standen. Originally published in the Journal of Conchology, this 

 paper has been reprinted as one of the Manchester Museum Hand- 

 books. The Loyalty Islands belong to the New Caledonian group, 

 and like that island are remarkably prolific in mollusk life. About 

 600 species, of which a score are new, are catalogued by Messrs. 

 Melvill and Standen. Some idea of the wealth of the fauna may be 

 obtained from the fact that there are 42 species of Conus, 53 rnitras, 

 46 Cypnea and Trivia (among them C. exanthema L. 1 Rashleigli- 

 ana Melv., sulcidentata Gray, aurora (aiirantiuiri) , clandestma v. 

 Artuffeli Jouss., poraria var. albinella (new), Trivia childreni, etc.). 

 Other interesting species are Turbo moluccensis and the Pleurotom- 

 idce, of which a large number of small species, including numerous 

 new ones, occurred. Twoexce >t plates illustrate new forms. The 

 work is very creditable to Mr. auu " T rs. Hatfield, who collected the 

 shells, as well as to the authors. 



Mr. G. B. Sowerby announces the issue of a supplement to his 

 "Marine Shells of South Africa." 



1 Probably not indigenous. 



