PYRAMIDELLnXE. 413 



of viewing Mr. Bailee's typical tablets of this variety of the 

 Chem. acuta. 



We need only say of the C. plicata and C. unidentata, that 

 they are old Montaguan species ; the two latter animals are 

 described by us. 



The C. glabrata ? of Miihlfeldt, said to be a production of 

 one of the isles of the Ultima Thule, is quite unknown to 

 us*. The animals of the C. acuta, C. conoidea, and C. spi- 

 ralis are fully mentioned ; their shells are admitted as 

 genuine indigena by every one. The Chem. acuta was dis- 

 covered by us many years since at Exmouth, but at the time 

 we neglected to publish notes on the hard parts ; it is curious 

 that after a lapse of thirty years we should be the first to 

 rediscover and describe the animal. 



The new Chemnitzia Barleei, as yet only known as a 

 northern production, is the discovery of that excellent and 

 indefatigable malacologist whose name it bears, and from 

 specimens from himself has first been ushered into notice 

 by ourselves as an undoubted member of this singularly 

 difficult genus; and it affords, in the misconceptions that 

 have attached to it, a plain proof of the correctness of this 

 observation. 



This species has been introduced and figured as the Rissoa 

 eximia, and subsequently in the Appendix of the ' British 

 Mollusca' as Chem. eximia. Surely the specific title of 

 "Barleei," the discoverer, ought, in this case, to have pre- 

 cedence over even a prior one, applied erroneously. 



After the reforms we have submitted, the British list will 

 exhibit some attenuation ; but a still numerous and a sounder 

 family will testify the importance of this truly British group, 

 which far outnumbers the discoveries of any other country in 

 respect of this peculiar and very interesting genus. We think 

 that the expurgation that has been made will bring the ac- 

 quirement and identity of our indigenous species within the 

 reach of the naturalist in this particular line of science. 



* Since this remark we find that British representatives of this obscure 

 species are only worn C. pallida. 



