Manchester Memoirs, Vol. xliv. (1900), No. 15. 51. 



apical two ventral segments are armed laterally with 

 stout, oblique keels, the basal one being stouter and shorter 

 than the apical. 



Comes near to M. crcssida and M. .\-carhiata ; may 

 be known from both by the fovea on the base of the 

 scutellum, and by the wide and deep depression at the 

 base of the median segment. 



MUTILLA QUADRICARINATA, sp. HOV. 



Long. 22 mm. $, . 



Hah. Barrackpore {Rot/uicy). 



Agrees in size and coloration with M. scxuiaadata 

 {cf. Cameron, Ann. &■ Mag. Nat. Hist.,]u\y, 1899, p. 61), but 

 differs from it by the prothorax wanting the band of white 

 pubescence ; by the scutellum wanting the depression in 

 the middle at the base ; by the median segment having 

 the pubescence longer, blacker, and more dense ; by its 

 apical slope being more rounded, not so shapely oblique ; 

 by the hair on the petiole being longer and black ; by 

 the tooth on the ventral keel being placed at the end, not 

 in the middle ; and by the antenna; being longer and more 

 slenderly built. 



Scape of the antennse covered with long black hair ; 

 the flagellum with a pale down. Front and vertex thickly 

 covered with long black hair ; the front also with silvery 

 pubescence ; the cheeks with a broad band of silvery 

 pubescence. Clypeus bare, shining, its sides and apex 

 obscurely striated ; the basal half of the mandibles thickly 

 covered with siU'ery pubescence. Pro- and meso-thorax 

 thickly covered with long, stiff, black hair. Prothorax 

 coarsely rugosely punctured ; the middle of the pleurae 

 with stout, distinctly separated striai ; the apex smooth. 

 Mesonotum coarsely rugosely punctured ; the furrows are 

 wide and deep ; between them is a longitudinal keel. 



