128 Scientific Intelligence. 
found a letter from Mr. Davidson, to whom I had before communicated 
my views, stating that Merista (Atrypa) tumida, cited by him as a type 
of the genus Merista, did not possess the shoe-lifter process, as in 
rs 
they contain nothing of which I am ashamed, or which I am afraid to 
have made public. 
The type of this genus Ampocastta is Orthis umbonata of Conrad, 
not “sazd to be,” r al 
was are that the genus 
Marrinta was proposed by McCoy, in 1844, for species very unlike 
I quote below what the reviewer says of the genera LerornyNcHUS, 
Atuyris Sprrie 
A, ERA, 
“4, Letorayncuus. Shell with the general form of RayncHoneELla, 
but with the plications more rounded, and rarely or never continued to 
[* We think Prof, Hall is wrong here. McCoy included in his genus such spe- 
8. ungui : that this is Davidson’s opinion by referring 
18, 19). Fe thare whos 4 veunecosl Malet wan an roe ae 
CULUS aS i, ¥ 
Seneric with 8. glabra. If therefore the Martini were to: be. restored, # 
would include 8. unguwiculus, and as Prof, iders this latter to be congeners 
