18 MR. F. SMITH ON HTMENOPTEROU8 INSECTS 



4. PoNERA PURPUREA. P. purpureo-cserulca ; capitc, thotacc abilomi- 

 nisque basi profunde striatis ; abdominis nodo incrassato, supra spinis 

 duabus parvis armato. 



Worker. Length 4 lines. Purple-blue, the antennae and legs fusco- 

 ferruginous ; the second and following segments of the abdomen black, 

 with the margins of the segments rufo-piceous. The head evenly, 

 strongly, and longitudinally striated ; the striation on the prothorax is 

 strong, transverse, and curved ; that on the thorax behind is also trans- 

 verse and runs obliquely forwards at the sides ; the striae on the pe- 

 duncle run round it, being circular ; on the first segment of the ab- 

 domen, in the centre of its apical margin, is a minute curved stria in 

 the form of a horse-shoe, round which passes a second, and so on, 

 each successive stria being an enlarged form of the preceding; the 

 second and following segments with a silky texture. 



Hab. Gilolo. 



5. PoNERA TORTUOLOSA. P. aeueo-nigra ; capite, thorace abdominis- 

 que basi striatis ; nodo spinis duabus acutis armato. {Operaria.) — P. 

 nitida, nigra ; capite longitudinaliter striato ; thorace profunde punc- 

 tato. {Fcemina.) 



Worker. Length 5 lines. Obscurely nigro-feneous, covered with a 

 short yellowish downy pile, and sprinkled with longer cinereous hair ; 

 the head strongly striated, the striae radiating as it were from the 

 middle of the face and running obliquely to the sides of the head ; 

 down the cheeks the striae are longitudinal ; the mandibles obscure 

 rufo-piceous. Thorax : the striae on the prothorax are transverse and 

 curved, behind which they are oblique, running from the middle for- 

 wards down the sides ; the peduncle is incrassate, rounded in front and 

 truncate behind, the striae running round, above armed with two acute 

 spines. The first node of the abdomen has a curved striation much 

 more delicate than that on the thorax ; the following segments not 

 striated, with their apical margins rufo-piceous ; the legs dark fusco- 

 ferruginous. 



Female. The same size as the worker, shining, the head longitudinally 

 striated, the thorax with large scattered punctures ; the abdomen im- 

 punctate, with the margins of the segments rufo-piceous ; wings slightly 

 fuscous, the nervures black, with a dark fuscous cloud in the mar- 

 ginal cell ; the tibiae and tarsi ferruginous as well as the mandibles 

 and antennae. 



Hab. Ceram ; Bourn. 



The sexes were identified bv Mr. Wallace. 



Gen. Ambltopone, Erichs. 



1. Ambh'opone castaneus. Smith, Proc.lAnn. Soc. v. 105. 1. 

 Hab. Ceram ; Bachian. 



