150 SMITH ON HTMENOPTEBA OP ABIT ISLANDS, 



the second node incrassate and subglobose; club of the antennae 

 2-jointed. 



Worker minor. Length 1^ line. Of the same colour as the worker 

 major, but with the head of the ordinary size and shghtly narrowed 

 behind, the mandibles of the same colour as the head ; the legs and 

 antennae longer, as well as the petiole of the abdomen ; the body is 

 very smooth and shining, the club of the antennae 2-jointed. 



Hab. Aru. 



Subfam. Cetptocebid^, Smith. 

 Gen. Meeanopltjs, Smith. 



1. Meranoplus spinosus. M. castaneo-rufus j abdomine nigro, tho- 

 race sexspinoso ; abdomine ovato. 

 , Worker. Length 1 1 line. Head and thorax rugose ; the antennae and 

 tarsi rufo-testaceous ; the eyes rather prominent, the groove above 

 them at the sides of the head extending backwards to the vertex. 

 Thorax : the anterior margin curved forwards, the lateral angles pro- 

 duced into a bifurcate process on each side, behind the processes, 

 slightly narrowed to the base of a long curved tooth ; the posterior 

 margin emarginate with a long sharp spine at each angle of the emar- 

 gination ; the node of the petiole globose. Abdomen black, smooth 

 and shining. 



Hab. Aru. 



Fam. MUTILLID^, Leach. 



Gen. Mftilla, Idnn. 



1. Mutilla Sibylla, Smith, Proc. Linn. Soc. ii. 86. 11 ? . 

 Hab. Aru; Borneo; Celebes. 



2. Mutilla manifesta. M. capite abdomineque nigris, thorace 

 sanguineo-rubro, maris alis nigro-fuscis. 



Female. Length 4f lines. Head black and rugose. The thorax blood- 

 red and coarsely rugose, its anterior margin widest and straight, 

 the sides gradually narrowed to the apex in a slight curve ; the lateral 

 margins have two teeth not wide apart. Abdomen black, rugose, and 

 slightly shining, with black pubescence above ; on the under surface it 

 is glittering silvery-white ; the legs and sides of the thorax have a 

 similar pubescence. 



Male. The same size as the female, and the same colour ; the eyes 

 notched. The thorax oblong-quadrate, the posterior lateral angles 

 acute ; the tegulae large and red ; the wings dark brown, with their 

 extreme base hyaline. Abdomen shining black, the first and second 

 segments strongly punctured, the rest much more finely and not very 

 closely so. 



Hab. Aru. 



3. Mutilla carinata. M. capite thoraceque metallico-purpureis 



