ANCEUS MAXILLARIS., 195. 
We have no hesitation in referring the animals above 
described to the Cancer mazillaris of Montagu. His 
description is indeed very concise, and his figure very 
rude, but an examination of the specimens preserved 
in the British Museum Collection leave no doubt on 
this point, all the males having the notch on the outer 
edge of the mandibles, forming a small tooth. 
Our specimens, moreover, have been found in con- 
siderable numbers along the Devonshire coast, in Mon- 
tagu’s localities. We are also able to state that Mr. 
Montagu was acquainted with the fully developed female, 
from an examination of his series of original drawings 
now in the hands of Mr. Parfitt of Exeter; whence we 
further learn that Montagu’s variety of his Oniscus 
ceruleatus, having the body white, with the head, 
pereion, and pleon maculated with yellow (which 
Montagu shrewdly suggested might possibly be a sexual 
variation), is a fully developed female. The name, there- 
fore, of Praniza Montagui, which Professor Westwood 
proposed for this variety, must sink into a synonym, 
Mr. W. P. Cocks found the males in crevices of 
rocks at extreme low-water mark at Gwyllyn Vase, 
and in trawl refuse, whilst the Pranize he took most 
abundantly in the neighbourhood of Falmouth, and a 
specimen in the British Museum, labelled P. flavus, 
Bantham, Falmouth, is undoubtedly a female of this 
species. Montagu only obtained two specimens of his 
Oniscus ceruleatus, which were found adhering to the body 
of the Father lasher (Cottus scorpius) on the Devonshire 
coast. The late Mr. W. Thompson’s collection also con- 
tains specimens of the males found amongst dredged 
matter at Bangor, in Ireland, in the month of August, 
and also upon Bangor oysters in the month of December. 
Mr. Norman also communicated to Professor Bell speci- 
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