CRANIOLOGY 435 
esterelanum, sordidum, alpinum, album, and two others 
named Kochi and Davidi. Of all this crowd only one spe- 
cies, Armadillidium vulgare (Latreille), appears to be known 
in Great Britain, and this species seems to be gradually 
following the track of Europeans all over the world. 
From Assinee in West Africa, M. Adrien Dollfus has 
just recorded two new genera and four new species of 
this family. His Synarmadillo clausus is near to Cubaris, 
but distinguished from it by having the terminal segment 
of the pleon after the fashion of Armadillidium. His 
Mesarmadillo is intermediate between the same two genera, 
and with its three species, Alluaudi, marginatus, and 
tuberculatus, appears to belong to the section I. B. of 
Budde-Lund’s Conspectus. As observed in Alluaudi, the 
second maxillz are said to be exceptionally large. 
In a paper on the terrestrial Isopoda of Spain, M. 
Dollfus has further added several new species to this and 
the preceding family. 
It may be useful here to call attention to the remarks 
which the same author has recently made as to the head 
of a woodlouse. The hinder part or top he calls the 
occiput. The anterior part comprehends, first, the vertex, 
‘generally forming a right angle or an obtuse angle with 
the occiput, from which it is always separated by a more 
or less strongly defined ridge;’ secondly, the epistome ; 
thirdly, the labrum attached to the epistome. The face is 
said to be sloping, when the occiput and vertex form an 
obtuse angle, perpendicular, when they form a right angle. 
Occasionally the occiput itself is bent forwards and then its 
front part must not be confounded with the vertex, from 
which it is separated by the usual boundary. 
