wheelkh: thk ants or hounko. 53 



Typc-hcaliiii: Sarawak, lionieo (A. H. Wullace). 



Sarawak (.1. Doria and (). Hcccari); Kapoiias Hasiii (diaper); 

 Central Hornoo (M\mifli Museum). 



Several workers taken at Kuehing by Jolm Hewitt and li. W. 

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

 River. Sarawak. 



*18a. DiACAMMA INTRICATFM subsp. KERSHAWI, SUbsp. nov. 



Worker. Length about 11 mm. 



Smaller than the typical intricaiuvi, witli smaller eyes, less pronounced 

 oh-peal 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. Tyyc— M. C. Z. 9,073. 



19. DiACAMMA RUGOSUM (Le Guillou). 



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



Ponera versicolor Smith, Journ. Proc. Linn. soc. London. Zool., 18.57, 2, p. 65, S . 



Diacamma rugosiim Mayr, Ann. Mus. civ. Geneva, 1872, 2, p. 149, S ; Emery, 



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

 Diacamma gcomctricum 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 Beccari; Bedot and Pictet; A. R. Wallace). 



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

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

 species. They lack metallic reflections, however. 



19a. Diacamma rugosum subsp. tortuolosum (Smith). 



Ponera tortiLolosa Smith, Journ. Proc. Linn. soc. London. Zool., 1863, 7, p. 18, U 

 Diacamma tortuolosum Forel, Mitth. Naturh. mus. Hamburg, 1901, 18, p. 46, ^ 



