52 THE NAUTILUS. 



as only those shells are mentioned which are perfect enough to 

 render identification complete. 



Poly-multilineata Say, which occurs plentifully in the middle 

 portions of the State, seems at Lawrenceburg to be conspicuous by 

 its absence, but is represented in the fossil state in large numbers, 

 and is an exceedingly well-developed form for this species. In fact 

 all these fossils are much larger and better developed than the 

 species which are found alive here at the present time, with the 

 exception of Pol. albolahris Say., which is in the deposits a very rare 

 shell, but most abundant in the surrounding woods. This may be 

 due to the fact that nlboluhris is a thin and fragile shell, and has not 

 been able to withstand the pressure of the surrounding soil so well as 

 elevata and its more solidly-built brethren. However, this theory 

 would not seem to hold good, as Succinea, one of the most fragile 

 land shells, occurs in numbers, of large size, and in a splendid state 

 of preservation. 



A NEW HELIX FROM CALIFORNIA. 



BY J. ROW ELL. 



Epiphragmophora exarata var. ruhicunda Rowel 1. 



Shell urabilicate, conic, less depressed than exarata, rather thin, 

 sculpture somewhat malleated, the malleation lying in ridges parallel 

 with lines of growth, color dark chestnut-brown, with one black 

 band, summits of ridges and malleation dark orange-red, interior 

 ruby-red ; whorls seven, rounded, suture impressed, the upper 

 whorls much less wrinkled than in exarata. 



Alt, 21, diam. 27-30 mm. (Occidental.) 



Alt. 25, diam. 31^ nim. (Freestone.) 



Habitat, Sonoma Co., on a high, dry ridge, in the town " Occi- 

 dental," on our ''Cal. North Western R. K." I have visited the 

 place three times, hoping to get other mature shells besides my 

 original pair, but have searched in vain. All around are exarata 

 proper and a few infumala, in the redwoods. But on my last trip, 

 I stopped over at the town " Freestone," six miles this side of Occi- 

 dental ; I chose the place because there the redwoods and the open 

 country meet, and I thought that for this reason it would be the 

 right place for my shell, and a dense fog helping me, I was delighted 

 to find quite a number of fine specimens. 



