196 Mr. W. L. Distant's Additions to a 



with a central fuscous spot, outer margin with distinct fuscous spots ; 

 wings ochraceous, posterior margin narrowly, and apex broadly, 

 castaneous. 



$ . Larger than g , abdomen above more castaneous, and with the 

 apical and anal segments cretaceous ; tegmina less suffused with 

 bronzy-green, especially on basal area, where there are two distinct 

 fuscous spots in radial area, and about four similar ones beneath 

 them, the apical half is also much more broken up with pale green ; 

 wings as in £ , but sometimes with the apical castaneous area only 

 indicated by two inner spots. 



Head, including eyes, about equal in width to base of mesonotum, 

 its length equalling that of pronotum — excluding its posterior 

 margin ; opercula in £ very strongly concavely sinuate inwardly, 

 the posterior angles overlapping, and thus exposing a circular space 

 of the metasternum ; rostrum reaching the posterior coxbo, its apex 

 piceous. 



Long. excl. tegm. $ 27-32, $ 29-30 millim. Exp. tegm. £ 

 70-90, $ 90-100 millim. 



Hob. Madagascar ; Region du Sud-est (Alluaud — 

 Paris Mus.). 



Allied to Y. guttularis, Sign., from which it is to be 

 differentiated apart from its very distinct coloration by the 

 more produced frontal area of the head and the very broad 

 central longitudinal sulcation to face. 



I have dedicated the species to Mon. A. Grandidier, 

 whose name is a household word in the zoological literature 

 of Madagascar. 



Umjaba alluaudi, sp. n. (Plate XI, fig. 1 a, b.) 



Head, pronotum, and mesonotum pale virescent ; head with the 

 anterior margins of front, two spots on lateral margins of vertex, and 

 the area of the ocelli, black ; pronotum with two oblique lines on 

 disk, and eight small spots — three on each lateral area, and two 

 central on posterior area, black ; mesonotum with four pale sub- 

 obsolete obconical spots on anterior area, and a transverse series of 

 four black spots on posterior area ; abdomen above piceous, centrally, 

 longitudinally castaneous on basal area ; body beneath and legs 

 greenish-ochraceous, ventral segments margined with piceous ; tegmina 

 very pale tawny brown, the costal membrane and area virescent ; on 

 basal half there are two spots in radial area, and two or three spots 

 in each of the ulnar areas beneath it umber-brown, on apical half 

 there are many umber-brown and greyish mottlings, and a prominent 

 subcostal greyish spot between radial area and apex of wing ; wings 



