MARSHALL: ALTERATIONS IN ‘BRITISH CONCHOLOGY.’ 25 
Argiope capsula Jeff. ‘ Professor King proposed to make 
this species the type of a new genus, which he named 
Gwynia, out of compliment to me; but although I duly 
appreciate the intended honour, I cannot conscientiously 
accept it. Although the species is unquestionably distinct 
from the foregoing (4. ciste//ula), it may be the young of 
A. neapolitana.’-—Jeffreys, ‘B. C.,’ vol. ii, p. 22. 
The identity of this species as a good one is now well 
established, and the use of Gzwyza as a sub-genus (not 
genus) is generally adopted. ‘The shell is quite unlike 
Argiope, either internally or externally. The animal is 
undescribed, and although I have taken many specimens 
tn situ at different times, its sluggishness or temerity, to say 
nothing of its minuteness, renders it difficult to examine. 
I have watched them for days, but could never observe the 
slightest movement in them. 
Lamellibranchiata Blainville. Mr. Edgar Smith, in the 
‘Challenger’ Report, has suggested, and on very excellent 
grounds, that ‘the name Pe/ecyfoda given to this section of 
mollusca by Goldfuss ought to be used in preference to 
that of Lamellibranchiata Bl. Not only has it priority, 
but it is more in conformity with the nomenclature of the 
other classes of mollusca—the Cephalopoda, Pteropoda, 
Gastropoda, &c. 
and points to the modification of one of 
the most important organs (that of locomotion) of the 
animals.’ 
Pecten testz Bivona (1836), according to Monterosato, 
in his ‘Nomenclatura,’ is P. czcomparabilis Risso (1826), 
and the latter should therefore take precedence. 
P. testze var. suborbicularis Jeff. I think this variety 
should now be expunged from the list, thirty years having 
elapsed without adding to the single valve on which it was 
founded. 
P. septemradiatus Mill. The Ostrea pes-lutre of Linne. 
‘The Linnean name appears to have been first recognised 
