NEW TERRESTRIAL ISOPODS FROM MADAGASCAR. 109 
slender ; flagelhim 3-jointed, with short terminal style. First masillse 
(fig. 6) : outer lobe terminating in four stout spines and six smaller ones, with 
stout setse on the outer margin of the appendage. Second maxillse (fig. 7) 
thin and plate-like, with terminal bifurcation, densel}^ setose. The segments 
of the mesosome are strongly convex and finely pitted, with lateral sculptur- 
ing ; pleural plates with terminal margin more or less truncate, posterior 
margin of the 5th, 6th, and 7th slightly produced backward. Maxillipedes 
(fig. 8) rather narrow ; outer lobe 3-jointed, with two spines on the first joint, 
two tufts of spines on the second, and a single terminal tuft on the third ; the 
inner' lobe is somewhat conical and surmounted with numerous small setse. 
Appendages of mesosome (fig. 9) stout and strongly spinous. Metasome 
comparatively small, segments 3-5 with pleural plates directed backward and 
inwards. Uropoda (figs. 10 & 11) short, extending beyond the telsou, basal 
plate sparsely covered with seta; ; exopodite sickle-shaped ; endopodite 
slender, terminating in three long setfe. Telson (fig. 12) triangular, lateral 
margins slightly rounded, apex subacute, with slight depression above. 
Length 19 mm. 
Colour (in alcohol) creamy white. 
Huh. Tamatave, East coast of Madagascar (Herschell S,- Cliauvhi). 
This fine species is the largest member of the genus yet described. Apart 
from this feature, it conforms with the essential characters of the genus. 
IV. Description of the Genus Calmanbsia. 
Calmanesia, gen. nov. 
Body oblong-oval, capable of partly rolling into a ball. Segments of 
mesosome and metasome with a series of long-jointed spines. Cephalon 
with lateral and median lobes. Antennulse very small. Antennae elongated ; 
flagellum 2-jointed. Pleural plates, excepting those of the first segment, 
drawn out into a long spinous process. Uropoda small and without endo- 
podites. Telson short and obtuse, not extending beyond the uropoda. 
Calmanesia methueni, sp. nov.. (PI. 9. figs. 13-25.) 
Body oblong-oval, covered with elongated jointed spines. Cephalon (figs. 
14 & 15) short, slightly convex dorsally, frontal margin distinct, with lateral 
and median lobes ; seven spines on the dorsal surface ; epistome slightly 
convex. Eyes situated dorso-laterally, facets few and large. Antennulse 
(fig. IG) small, 3-jointed, middle joint very small. Antennse (fig. 17) elon- 
gated, 1st joint small, 2nd and 3rd larger, 4th and 5th greatly elongated ; 
flagellum 2-jointed, distal joint rather longer than the proximal one, with 
terminal bunch of setce. First maxillse (fig. 18) : outer lobe with six short 
