174 Appendix to Part I. 



width 096 inch. It is worthy of observation, that all the shells 

 of this variety came from a different part of the island, from the 

 foregoing specimens. 



2. Cochlogexa Fossiiis. G. Sowerby. 



Testa oblongd, cr am use id a. spird sub a cumin at a, ohtusd. anfractibus 

 senis, subventrieosis, levifer striatis, suturd profundi impressd ; 

 aperturd subovatd ; per if remote continuo, subincrassato ; umbilieo 

 parvo: long. 0"8j lot. 087, poll. 



This species is of the stature of C. Guadaloupensis, but may 

 easily be distinguished by the form of the volutions and the deeply- 

 marked suture. The specimens vary a little in their proportions. 

 This species was not obtained by Air. Darwin, but is from the 

 collection of the Geological Society. 



1. Cochlicopa slbplicata. G. Sowerby. 



Testa oblongd, subacumincdo-pyramidali, apice obtuso, anfractibus 

 ■novem Iambus, postice subplicatis, suturd crenulatd; aperturd 

 ovatd, postice acuta, labio externo tenui; columella obsolete sub- 

 truncatd ; umbilieo minimo: long. 0*93, lat. m 2S,poll. 



This and the following are placed with De Ferussac's sub-genus 

 Cochlicopa, because they are most nearly related to his Cochlicopa 

 fulliculus. As species they are, however, both perfectly distinct, 

 beino- much larger, and not shining and smooth like C. follicidus, 

 which is found in the south of Europe and at Madeira. Some very 

 young shells and an egg were found, which I conjecture to belong 

 to this species. 



2. Cochlicopa teeebelloi. G. Sowerby. 



Testa oblongd, cy Unci raceo-py r amid cdi, apke obtusiusculo , anfractibus 

 septenis, Iambus; suturd postice crenulatd ; aperturd ovali, 

 postice acuta, labio externo tenui, antice deciivi ; columella 

 obsolete truncatd, umbilieo minimo: long. 077, lat. 0"25, 

 poll. 



This species differs from the last in being more cylindrical, and 

 in being nearly free, when full grown, from the obtuse folds of the 

 posterior volutions, as well as in the form of the aperture. The 

 young shells of this species are longitudinally striated, and they 

 have some very obsolete longitudinal folds. 



1. Helix bilailellata. G. Sowerby. 



Testa orbiculato-depressd, spird plana, anfractibus senis, ultimo 

 subtus rentricoso, super lie angular i ; umbilieo parvo ; aperturd 



