DORYLUS. 



Fig. 6. — Dorylus orientalis, (^ . 



brown, pubescent and very haiiy, the hairs erect, yellow, aud 

 most dense under the head, on the sides and beneath the thorax, 

 and at the apex of the abdomen ; pubescence pale, dense, line 



and silky ; wings tiavo-hyaline. Head 

 narrow, transverse, eyes and ocelli 

 large ; mandibles short, broad, porrect, 

 blunt at apex and with a blunt tooth 

 on the inner margin at base. Thorax 

 massive, gibbous in front ; scutellum 

 compressed; postscutellum narrow, 

 sunk between the scutellum aud 

 metanotuin, basal portion of the latter 

 depressed, flat, apex truncate; legs short 

 and robust. Node of pedicel some- 

 what square, convex above, slightly 

 contracted anteriorly and posteriorly ; 

 abdomen long, cylindrical, massive, clavate towards the apex, 

 and curved downwards. 



^ maj. CastaneoLis brown, with the abdomen generally lighter 

 in colour than the head and thorax ; head and 

 thorax densely, abdomen more lightly punc- 

 tured ; pubescence almost entirely wanting, a 

 few yellow erect hairs on the front of the head, 

 at the apex of and beneath the abdomen. 

 Head rectangular, occiput deeply emarginate ; 

 the head slightly wider anteriorly than pos- 

 teriorly, a deeply impressed medial line or 

 furrow down the front. Thorax elongate, 

 somewhat rectangular, but rounded anteriorly, 

 depressed and flat above, constricted at the 

 pro-mesonotal suture ; legs short and robust. 

 Node of pedicel broader than long, transverse 

 anteriorly and posteriorly ; abdomen dejn'essed 

 above, about as long as the thorax and node of 

 pedicel united. 

 5 mill. Similar, very much smaller and very much lighter in 

 colour, being of a pale honey-yellow ; occiput not emarginate, 

 front of the head not furrowed ; node of the pedicel rounded 

 above. 



$ unknown. 



Li'Uf/tJt, d" 17-23; ^ maj.5-(); ^ min. 2'5-3 uwn. 

 Hah. Throughout India, Burma, and Ceylon, extending to the 

 Malay Peninsula, Borneo, Sumatra, and Java. 



The males of this species are very variable, aud can be separated 

 into three races or subspecies, but these are not constant and grade 

 one into the other. The eastern race coming from the hot moist 

 area of Burma and Tenasserim is, as one would expect, darker, 

 and has been separated as D.fiiscus jjy Emery (Ann. Mus. Civ. Gen. 

 xxvii (1889), p. 487). D. low/icornis, Shuck., has the head black, 

 and occurs along with the typical form over the whole of India. 



Fig. 7. — Dorylus 

 orieuialis, ^ maj. 



