wheeler: the ants of Borneo. 53 



Type-locality: Sarawak, Borneo (A. R. Wallace). 



Sarawak (J. Doria and O. Beecari); Kapouas Basin (Chaper); 

 Central Borneo (Munich Museum). 



Several workers taken at Kuching by John Hewitt and H. W. 

 Smith and by the latter at Sadong, Serambu Mt., and Rambungan 

 River, Sarawak. 



*18a. DiACAMMA INTRICATUM subsp. KERSHAWI, Subsp. nOV. 



Worker. Length about 11 mm. 



Smaller than the typical iniricaium, with smaller eyes, less pronounced 

 cljrpeal carina, the petiole narrower anteriorly, and the striae on the upper 

 surface of the petiole and first gastric segment almost obliterated. The 

 second gastric segment is faintly, but distinctly, longitudinally striated in the 

 middle above, and the whole gaster is more opaque and more densely punctate. 

 The pilosity on the body and legs is slightly more abundant than in the typical 

 form. 



A single specimen taken by Mr. E. B. Kershaw in British North 

 Borneo. Type.— M. C. Z. 9,073. 



19. DiACAMMA RUGOSUM (Le Guillou). 



Ponera rxigosa Le Guillou, Ann. Soc. ent. France, 1840, 10, p. 318, S . 



Ponera versicolor Smith, Journ. Proc. Linn. soc. London. Zool., 1857, 2, p. 65, ^ . 



Diacamma rugosum Mayr, Ann. Mus. civ. Genova, 1872, 2, p. 149, ^ ; Emery, 



Gen. Ins. Ponerinae, 1911, p. 66. 

 Diacamvia geometricum subsp. versicolor Emery, Rev. Suisse zool., -1893, 1, 



p. 189; Emery, Ann. Mus. civ. Genova, 1887, ser. 2, 5, p. 438. 



Type-locality: Borneo. (Voyage of the "Astrolabe" and "Zelee"). 



Sarawak (Doria and Beecari; Bedot and Pictet; A. R. Wallace). 



Eleven workers from Sadong, Sarawak (H. W. Smith) and two from 

 Kuching (John Hewitt) agree with Emery's redescription of this 

 species. They lack metallic reflections, however. 



19a. DiACAMMA RUGOSUM Subsp. TORTUOLOSUM (Smith). 



Ponera tortuolosa Smith, Journ. Proc. Linn. soc. London. Zool., 1863, 7, p. 18, t^ 

 Diacamma tortuolosuni Forel, Mitth. Naturh. mus. Hamburg, 1901, 18, p. 46, U 



