THE NAUTILUS. 83 



chology, xii, p. 144, There remains now nothing to do but to restore 

 Martyn's name to this fine shell. — H. A. Pilshry. 



Testacella in Philadelphia. Mr. Robert Walton has found 

 during the summer, the European Testacella viuugei Fer. in a gr^jen- 

 house at Lower Roxborough, Philadelphia. From their being so 

 numerous and the green-house an old one in which no new plants 

 have been introduced for some years, we would infer that they have 

 been living there for some time. The specimens brought by Mr. 

 Walton were from very small to extra large ones. — C. W. Johnson. 



New species of shells. — At the regular meeting of the Academy 

 of Nat. Sci. of Phila., Tuesday Nov. 3, Mr. Pilsbry offered descrip- 

 tions of and remarks on the follo\\ing new species of West Indian 

 land shells; Choanopoma caymenensis, a shell having the general 

 form and characters of C. newtonl Shutt., 5 whorls remaining ; 

 sutures impressed, remotely beaded, whorls encircled by spaced, un- 

 equal spiral lirpe, the longitudinal stria very close, every 8th one on 

 the body-whorl stronger ; light-yellowish, having zigzag longitudinal 

 chestnut streaks. Umbilicus moderate, lip formed as in C. newtoni, 

 except that the columellar edge is fluted. Alt. 16, diam. 9 mm., 

 alt. of apert. 6 mm. ; measured outside peristome. Caynem Is. 



Helix xanthophaes, the smallest known species of Hemitrochus, 

 measuring only, alt. 6}, diam. 8 mm. It is subglobose, obtusely 

 carinated, narrowly rimate. Whorls 4. Surface shining, striat- 

 ulate. Obliquely streaked with reddish-chestnut on a pale, yellowish 

 ground, with or without a dark peripheral zone, bordered below 

 with light. Locality Inagua. Helix {Plagioptyclia) Marjnardi, 

 allied to H. Brownii Pilsbry, but not carinated, having thread-like 

 strise, banded with chestnut above the periphery, and having numer- 

 ous lighter brown bands above and below^ Umbilicus nearly covered 

 by the reflexed baso-columellar lip, which has a heavy callus 

 within. Alt. 8, diam. 13t mm. Bahamas. 



Patula Cooperi, sinistral. — Mr. Leslie M. Cockerell, writing 

 from Norwood, San Miguel Co., Colorado, informs us that he has 

 found a sinistral specimen of the above. This is a rare malforma- 

 tion in America, but it occurs more frequently in P. cooperi than in 

 most species, as several cases are on record. — H. A. P. 



Recent Changes in Nomenclature. — Mr. R. B. Newton, in 

 the Systematic list of British OUgocene and Eoceyie Mollusca, London, 

 1891, has made a number of changes in generic nomenclature, the 

 principal of which are as follows : 



