THE NAUTILUS. 143 



be considered worthless, the present ones were so manifestly of tins 

 same species that they may be regarded as a confirmation of it. 

 They are rather like the Mountain Lake mussels in shape, but some- 

 what larger, and somewhat more inflated than the Turkey Lake 

 form. It appears that the comparatively numerous, strong, mostly 

 dark lines of growth and the fine (<is compared with those of oiher 

 species), sharp, crowded strife are characteristic and, combined with 

 surface appearance and color, let specimens be recognized at a glance. 

 Specimens of the type lot are in the Museum of the Geo). Survey 

 of Indiana and in the Carnegie Museum, Pittsburgh (No. .0465 of 

 my collection of SpIicEniJce), in the collection of Mr. Bryant Walker 

 and the Mus. Acad. N. Sc. Phila. 



PUBLICATIONS RECEIVED. 



Kkv to the Genera of Gastropoda of Michigan. By H. 

 BuuRiNGTON Baker, (Reprint from the 11th Rept. Mich. Acad» 

 Sci., 190D, pp. 134-140.) * 



Descriptions of Nine Species of Ennea and Five Heli- 

 coiDS FROM South Africa. By James Cosmo Melvilu and 

 John Henrv Ponsonby. (Ann. Mag. Nat. Hist., vol. 4, ser. 8, 

 pp. 485-402, pi. 7, 19U9.) 



Report on the Marine Moi.lusca Obtained by Mr. J. 

 Stanley Gardner, F. R. S., Among the Islands of the 

 Indian Ocean in 1905. By Jamks Cosmo Mklvill. (Trans. 

 Linn. Soc. London, XIII, pp. 65-138, pi. 5, 1909.) About 170 

 species are recoi'ded of which 15 are new to science. 



MOLLLSCA from THE HoPE ISLANDS, NoRTH QUEENSLAND. 



By C. IIedley. (Proc. Linn. Soc. N. S. Wales, 1909, vol. 34, pp. 

 420-466, pis. 36-44.) An interesting paper treating of a rich and 

 varied fauna. The Hope Islands are situated near Cooktown, just 

 inside the Endeavor Reef. The writer states that more tiian 700 

 species were secured; 100 species are discussed in this paper, half of 

 which are new to science. The figures are unusually fine in detail 

 and sculpture. 



Dkscriptions of New and Notes on Other Australian 

 POLYPLACOPHORA. By C. Hkdliiy and A. F. Basset Hull. 



