54 bulletin: museum of comparative zoology. 



Diacamma rugosum subsp. tortuolosmn Emery, Rend. R. accad. sci. Bologna, 

 1897, 1896-97, n. s., 1, p. 160; Emery, Gen. Ins. Ponerinae, 1911, p. 07. 



Type-locality: Ceram (A. R. Wallace). 

 Tandjong, S. E. Borneo (Fritz Suck). 



19b. Diacamma rugosum subsp. geometricum (Smith). 



Ponera geometrica Smith, Journ. Proc. Linn. see. London. ZooL, 1857, 2, 



p. 67, g . 

 Diacamma geometricum Mayr, Verb. Zool. bot. gesellsch. Wien, 1862, 12, 



p. 718, S . 

 Diacamma javanum Emery, Ann. Mus. civ. Genova, 1887, ser. 2, 5, p. 439, ^ . 

 Diacamma rugosum subsp. geometricum Emery, Rend. R. accad. sci. Bologna, 



1897, 1896-97, n. s., 1, p. 154, fig. 3, 8, 14, ^ ; Emery, Gen. Ins. Ponerinae, 



1911, p. 66, y . 



Type-locality: Singapore (A. R. Wallace). 



Banguey I., N. Borneo (Emery). 



A worker and two males taken in British North Borneo (E. B. 

 Kershaw). The male measures 8 mm., and is ferruginous red, with 

 the posterior part of the head and some indistinct spots on the niesono- 

 tum dark brown. Wings slightly infuscated, with dark brown veins 

 and pterostigma. Antennae very long (7 mm.), mandibles small, 

 narrow, edentate, with acuminate, pointed tips. Petiole 1\ times 

 as long as broad, narrowed in front, but with very prominent stig- 

 matic tubercles; in profile about as long as high, triangular, with 

 sloping, slightly concave anterior and abrupt posterior surface and 

 blunt apex. Pygidium small, bluntly rounded, cerci well-developed; 

 genitalia partially exserted. Body shining, sparsely and finely 

 punctate. Hairs brown, short, rather abundant, pubescence pale, 

 more abundant, and like the hairs, on all parts of the body. 



19c. Diacamma rugosum subsp. vagans Smith var. birmanum 



Emery. 



Diacamma rugosum subsp. vagans var. birmana Emery. Ann. Mus. civ. 



Genova, 1887, ser. 2, 5, p. 441, ^ ; Emery, Gen. Ins. Ponerinae, 1911, p. 67; 



Forel, Rev. Suisse zool., 1911, 19, p. 23. 

 Diacamma rugosiwi subsp. sculptum var. birmana Emery, Rend. R. accad. sci. 



Bologna, 1897, 1896-97, n. s. 1, p. 157, S . 



Type-locality: Minhla, Burmah (Comotto). 

 Sarawak (Haviland). 



