CEANIOLOGY 435 



esterelanum, sordidiim, alpinum, album, and two others 

 named KocJii and Davidi. Of all this crowd only one spe- 

 cies, Armadillidiumvnlgare (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 Cuharis, 

 but distinguished from it by having the terminal segment 

 of the pleon after the fashion of ArmadiUidium. His 

 Mesarmadillo is intermediate between the same two genera, 

 and with its three species, Alluaudi^ marginatus, and 

 tuber cidatus, appears to belong to the section I. B. of 

 Budde-Lund's Conspectus. As observed in AUuaudi, the 

 second maxillas 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. 



