TWO NEW TERRESTRIAL ISOPODS FROM MADAGASCAR. 107 
On two new Terrestrial Isopods from Madagascar. By Walter E. Oollinge, 
D.Sc, F.L.S., Keeper of the Yorkshire Museum, York. 
(Plate 9.) 
[Read loth June, 1922.] 
Contents. 
Page 
I. Introduction 107 
II. The Isopodeau Fauna of Madagascar. . 107 
III. Description of AUoniscus nacreus, sp. nov 108 
IV. Description of the Genus Cuhnanesia, gen. nov 109 
Cabnunesia methueni, sp. nov 109 
a. General Form 110 
b. The Cephalon Ill 
1. Eyes. 2. Antennulee. 3. Antenn*. 4. Oral Appen- 
dages. 
c. The Mesosonie Ill 
1. Pleural Plates. 2. Appendages. 
d. The Metasome 112 
1. Uropoda. 2. Telson. 
V. Affinities 112 
Bibliography 112 
Explanation of the Plate 113 
I. Introduction. 
For the privilege of examining the very interesting specimens of Terrestrial 
Isopods here described, I am indebted to the kindness of my friend Dr. W- 
T. Coalman, of the British Museum (Natural History). The material was 
collected in Madagascar in 1911 by the Hon. Paul A. Methuen. 
There is a single specimen referable to the genus AUoniscus, Dana, not 
hitherto described, remarkable for its great size; and a further very interest- 
ing new species, for the reception of which I have constituted a new genus, 
to which I have given the name of Calmanesia in honour of Dr. W. T. Caiman. 
II. The Isopodean Fauna of Madagascar. 
Very little attention has been paid to the Terr'estrial Isopods of Madagascar. 
Budde-Lund (3) has described certain species in the collection of the Berlin 
Museum. Dollfus (8) in 1889 described the Porcellio cristatus, placed 
by Budde-Lund in the genus Lt/probius and later in the genus Nagara. The 
same author in 1895 (9) described a further series of species, amongst which 
