612 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



EPIPHKAGMOPHORA TRASKII TRASKII (Newcomb). 



Plate 114, figs. 1-18; plate 117, figs. 1-3. 



Helix trasUi Nkwcomb, Proc. Cal. Acad. Nat. Sci., vol. 2, 1861, pp. 91-92. 

 Aglaja traskii Tryon, Amer. Journ. Conch., vol. 2, 1866, p. 314, pi. 5, fig. 16. 

 Arionta traskii W. G. Binney, Terr. Moll., vol. 5, 1878, p. 369. 

 Helix franki J. G. Cooper, err. typ.; teste J. G. C, in letters. 

 Epiphragmophora traskii Pilsbry, Tryon's Man. Conch., vol. 9, 1894, p. 199. 

 Epiphragmophora traskii major Hemphill, noinen nudum. 

 Epiphragmophora traskii verna Hemphill, nomen nudum. 

 Epiphragmophora traskii saucius Hemphill, noraen nudum. 



Epiphragmophora petricola Berry, Univ. Cal. Pub. Zool.,vol. 16, No. 9, Jan. 1916, 

 pp. 107-9. 



In this subspecies the fine papillation of the nuclear whorls scarcely 

 extends beyond the third turn and is never stronger on the turns that 

 succeed the nucleus than on the nucleus. 



I have seen Dr. Newcomb's cotypes, four specimens, which are 

 in the collection of Cornell University, No. 27832, and I have figured 

 one of these on plate 116, as figures 7-9. These four specimens which 

 come from Los Angeles, California, yield the following measurements : 



To this subspecies I must refer Hemphill's EpipliragmopTiora traskii 

 major, E. t. verna, and E. t. saucius. The first of these simply repre- 

 sents the largest shells of the group, while the green tinge of E. t. 

 verna HemphiU, v/hich is fugitive, is characteristic of all fresh speci- 

 mens. The somewhat smaller average in size of the series of shells, 

 which Hemphill named verna, is due to a partially diseased condi- 

 tion of the whorls. 



EpipliragmopTiora trasTcii saucius Hemphill, as selected by the 

 author of that name, represents pathologic specimens. It is E. t. 

 verna carried a Uttle further, pathologically speaking. 



I have seen two paratypes of Mr. Berry's Epipliragmopliora petri- 

 cola, and I give figures of one of these on plate 117, figures 1-3. 

 These specimens must be assigned to typical Epipliragmopliora trasMi 

 trasHi. Mr. Berry's ecologic data given in the paper referred to 

 above are rather interesting since they throw considerable light on the 

 habits of these animals. I therefore quote from his paper: 



Type.— Cat. No. 3480 of the writer's collection; paratypes in the collections of 

 the University of California and the private collection of Mr. Allyn G. Smith. 



Type-locality .—A rocky talus slope on the southeast wall of Mill Creek Canyon, San 

 Bernardino Mountains, California, near the old road, about 1-1/2 miles from the canyon 



