or MYSOL, CERAM, WAIGIOU, BOURU, AND TIMOR. 19 



Gen. EcTATOMMA, Smith. 



1. Ectatomma rugosa, Smith, Proc. Linn. Soc. iv. 143. 1. 

 Hab. Ceram ; Aru. 



Gren. Odontomachus, Latr. 



1. Odontomachus siraillimus. Smith, Cat. Form. p. 80. 11 ; Proc. Linn. 

 Soc. iv. 144. 1. 



Hab. Waigiou; Ceram; Aru; Ceylon; Goram. 



2. Odontomachus tyrannicus, Smith, Proc. Linn. Soc. vi. 44. 3. 

 Hab. Waigiou ; i^ju ; Mysol ; Celebes. 



3. Odontomachus malignus, Smith, Proc. Linn. Soc. iii. 144. 3. 

 Hab. Ceram ; Aru ; Mysol. 



4. Odontomachus nigriceps, Smith, Proc. Linn. Soc. v. 103. 3. 

 Hab. Mysol; New Guinea (Dory). 



5. Odontomachus CEPHALOTES. O. ferrugineus, capite abdomineque 

 longitudinaliter striatis; thorace oblongo, transversim striato. 



Worker. Length 5^ lines. Ferruginous ; the head and abdomen, or 

 sometimes the entire insect, more or less fuscous, the antennae and 

 legs pale ferruginous ; the mandibles tridentate at the apex, the inner 

 and outer teeth, particularly the former, blunt at their apex ; their 

 inner margin without teeth ; the head large, oblong-quadrate, finely 

 striated longitudinally, and having a glossy silky appearance. The 

 thorax and node of the abdomen finely striated transversely. The 

 abdomen striated transversely at the base, the striae curving at the 

 sides and then running in a longitudinal direction to the apex. 



Hab. Ceram. 



6. Odontomachus aciculatus. O. fusco-ferrugineus ; capite supra 

 longitudinaliter striato, thorace abdomineque transversim striatis. 



Worker. Length 5i lines. Blackish brown, with the antennae, legs, 

 and mandibles ferruginous ; the head posteriorly and the node of the 

 peduncle reddish brown ; the mandibles tridentate at the apex, their 

 inner margin serrated. The face longitudinally striated ; the sides 

 of the head behind the eyes obliquely striated, the striation much 

 finer than that on the face. Thorax : the prothorax with a circular 

 striation, behind which it is transverse. The node of the peduncle 

 transversely striated, terminating above in one acute spine ; the ab- 

 domen transversely and finely aciculate. 



Hab. Mysol. 



G-en. PoDOMTRMA, Smith. 



1. Podomyrma basalis. Smith, Proc. Linn. Soc. iii. 147- 4. 



Hab. Mysol ; Bouru ; Amboyna ; Aru ; Dory. 



The specimens from Mysol consist of a worker and a female : the latter 



2* 



