108 



THE NAUTILUS. 



collected by Mr. C. H. Rowe, in Lake Quinsigamond, near 

 Worcester, Sept. 29, 1917. Whether these represent a recent 

 introduction he could not ascertain. The Boston colony re- 

 ferred to in The Nautilus, Vol. 29, p. 36 and Vol. 30, p. 48, 

 still exists. The colony of V. contectoides in the Public Garden, 

 Boston, mentioned in The Nautilus, Vol. 30, p. 72, has in- 

 creased greatly during the summer, notwithstanding that the 

 lake was drained for a short time in the earty spring. 



— C. W. Johnson. 



POLYGYRA ALBOLABRIS MARITIMA IN MASSACHUSETTS. Several 



years ago, when I was at Wood's Hole, Mr. V. Edwards de- 

 scribed to me some snails which he had seen on Ram Island, 

 off that coast, I thought he had found H. hortcnsis, and expressed 

 a wish to visit the colony. He kindl} 7 took me to the place, and 

 instead of H. hortensis, we found Polygyra albolabris, of a small 

 greenish variety according well with my recollection of var. mari- 

 tima, which Dr. Pilsbry showed me years before in the collection 

 at Philadelphia. I think we may refer the shells to that variety 

 or race, which is not cited in Mr. Johnson's list of New England 

 Mollusca. — T. D. A. Cockerell. 



[I can confirm the identification from specimens sent by 

 Prof. Cockerell. — H. A. Pilsbry]. 



PUBLICATIONS EECEIVED. 



The Californian Land Shells of the Epiphragmophora 

 traskii group. By Paul Bartsch (Proc. U. S. Nat. Museum 

 vol. 51, pp. 609-619, plates 114-117). This species and its 

 allies have not been well understood. Numerous forms of the 

 group had been named by Hemphill and others, without de- 

 scriptions. Dr. Bartsch therefore undertook a revision, utiliz- 

 ing the considerable material contained in the National Museum 

 and the Academy of Natural Sciences of Philadelphia, with a 

 few specimens from other sources. Descriptions are given of — 



E. cayamacensis n. sp. with the new subspecies avus and 

 venturensis. 



E. traskii (Newc. ) with subsp. tularica new, zechae Pils. proles, 

 coronadoensis, coelata and phlyctaena, new, carpenteri (Newc.) 



As synonyms under E. traskii traskii, Dr. Bartsch places 

 Hemphill's undescribed varieties major, verna and saucius, and 

 Epi. petricola Berry. All of the species and races are figured. 



This revision should lead to a further increase in our knowl- 

 edge of these difficult Helices, as conchologists collecting in 

 southern California can now identify their finds. — H. A. P. 



