ANOMIA. 129 
Sil. Syst. pl. 6, f. 7a, &e. Myr. Sharpe, to whom we are indebted 
for this synonymy, remarks, that “ the species is common in 
the Upper Silurian Rocks both in this country and on the Con- 
tinent. More than four teeth are present in the elevated por- 
tion of the upper valve (the number being from six to eight), 
but there is no other specimen in the Linnean collection which 
answers so well to the description in the ‘Systema; and of this 
species there are four examples.” I fear some admixture of 
specimens must have occurred during ‘the last few years. Mr. 
Salter fancies that in 1848 he had seen two of borealis 
(Schloth.) there, and Mr. Davidson states that he found in the 
box four examples of Rhynch. Wilsoni, one of R. nucula, and 
one probably of R. Mooreit. Mr. Sharpe and myself were so 
fortunate as to have examined the collection previous to the 
ill-judged and unauthorised attempt of a tyro to rearrange the 
collection in modern genera. 
Anomta pubescens. 
The shells (Brit. Moll. pl. 56, f. 4) enclosed in the box thus 
marked in the Linnean cabinet are the young of our British 
Terebratula caput-serpentis. The downy efflorescence, men- 
tioned in the description, and from which the name was de- 
rived, no longer covers them; it was, doubtlessly, some extra- 
neous substance with which they had been coated. The con- 
clusion arrived at from an examination of the types was antici- 
pated by naturalists from the description and the locality. The 
division of the species by our author was not unnatural, for the 
sculpture of the fry is much coarser than that of the adult; the 
shape, too, is different. 
Anomia fareta. 
The box thus markedin the Linnean collection encloses spe- 
cimens of the Terebratula obsoleta of Sowerby’s ‘ Mineral Con- 
chology ’ (teste Davidson, Salter, Sharpe, and 8. Wood), which 
s 
