82 THE NAUTILUS. 



just as we eat oysters at home, excepting that he had scalded them 

 first. Before I left I had secured fifty nice specimens, and learned 

 the locality, which is Mar del Plata, a summer resort on the coast 

 of Argentina. I can find no figure of it in d'Orbigny, and from 

 Tryon's Structural and Systematic Conchology I judge it to be a 

 Lntraria. 



'' Helix ladea is extven-ni\y common in the markets at Buenos 

 Ay res, and I suppose it can be accounted for by the numerous 

 Italians there. 



" I want to mention that while coming down here we were boarded 

 when three hundred miles off the coast of Brazil (lat. 30° 09' 07" S., 

 long. 45° 36' 39" W.) by a swarm of decapods, they flying from 

 the water and landing on our deck and in the chains. Our deck is 

 at least twelve feet above the water, and to get upon it they had 

 to go over the hammock nettings. I secured fifteen specimens 

 of various sizes. There were hundreds more but they Avere injured 

 so much by their fiill as to be of no value. I enclose a hasty trace- 

 ing from a water-color sketch I made from the largest one." 



The Unionidj^ of Spoon River, Fulton Co., 111., are enumerated 

 and intelligently discussed by Dr. W, S. Strode in the American 

 JS'ahiralist for June. 



The Records of progress in American zoology which the 

 Aynerican Naturalist publishes from time to time are a total failure 

 as far as niollusks are concerned. The most prominent feature of 

 the record is the omission of important papers. Our contemporary 

 should not judge American malacology by the handful of papers 

 that chance to fall upon his desk. 



At the monthly meeting of the Linnean Society of New South 

 Wales, Australia, June 30, 1892, a paper was read entitled " On 

 the Genus Perrieria," by C. Hedley, F. L. S. This paper deals 

 with the rectification of nomenclature; it points out (1) that the 

 type of Coeliaxis is and must remain, not exigua Ad. & Anor., as 

 misquoted by Fischer and Tryon, but layardi Ad. & Aug., as insti- 

 tuted by the founders ; (2) that exigna was based in error upon 

 specimens of a^fs^rafe; (3) that ai^.s-ira^/s and foyarc/i are generically 

 incompatible; and (4) that australis (= exigua) is rightfully com- 

 prehended under the genus Perrieria Tapparone-Canefri. 



An apropos addition to this " clearing up " may be made here. 

 Ancey, in the Conchologist's Exchange, September 1887, p. 39, 



