THE NAUTILUS. 95 



echinatum, Dall., Pliocene, Shell Creek, Fla. ; 176, Orthalicus 

 zebra, Miill., Florida Keys. 



Win. J. McGinty, Philadelphia.— 



^larginella varia, Sby. ; Unio orbiculatus, Hild., Ohio R. 

 Philip Nell, Philadelphia.— 



153, Selenites concavus, Say, Philadelphia ; 155, Anodonta 



fluviatilis, Lea, Delaware R., Phila. ; 156, Patula alternata, 



Say, Philadelphia. 



AVm. J. Fox, Philadelphia. — 



34, Potaniides (Cerithidea) scalariforniis. Say, Indian R., Fla. ; 

 125, Vertigo Bollesiana, Morse, Philada. ; 126, Truncatella 

 bilabiata, Pfr., Oak Lodge, Fla. ; 127, Zonites celhirius, Miill., 

 Philadelphia. 



John H. Campbell, Philadelphia. — 



151, Nassa fossata, Gould, San Diego, Cal.; 150, Helix Cal- 

 iformensis, Lea, Cal., with varieties, ramentosa, Gould : Bridge- 

 sii, Newc. : Nickliniana, Lea and Diabloensis, Cooper. 



John Ford, Philadelphia. — 



163, Mytilus edulis, Linn., Atlantic City, N. J. ; 164, Modiola 

 modiolus. Lam., Atlantic City, N. J. ; 169, Crepidula fornicata, 

 Linn., Providence, R. I.; 165, L^nio nasutus, Say, Potomac R., 

 (Washington); 166, Unio complanatus. Lea, same locality ; 

 167, Unio Fisherianus, Lea, same locality ; 168, Unio radiatus, 

 Linn., Providence, R. I. 

 Total — 140 genera, 186 species, 196 trays. 



GENERAL NOTES. 



OsTR.EA GiGAS Thwiherg. — In a collection of Japanese mollusks 

 make by Mr. Frederick Stearns of Detroit, Mich., the writer found 

 a specimen of this species measuring 17| inches long, greatest breadth 

 31 inches, length of ligament area 31 inches. It is by far the lar- 

 gest recent oyster on record. Locality, Enoshima, Japan. — H. A. 

 Filsbry. 



Tebennophorus Hemphilli. — Last Spring I found in Marion Co., 

 Indiana, one specimen of Tebennophorus Hemphilli W. G. Binney, 

 and revisited the place often since to find more, but succeeded only in 

 taking a second (young) specimen. 



