wheeler: the ants of borneo. 81 



or erect, shorter and more reclinate on the appendages, partly short and 

 appressed on the gaster. 



Black; terminal antenna! joint, articulations of legs and tarsi, beyond the 

 basal joint, reddish brown; cheeks and tips of mandibles obscurely tinged with 

 red. Wings distinctly infuscated, more deeply along the anterior margin; 

 veins and pterostigma dark brown. 



Described from a single specimen taken on ]Mt. Matang, West 

 Sarawak by G. E. Bryant and sent me by ]\Ir. Horace Donisthorpe. 

 There is also a worker from Kuching (John Hewitt) in my collection. 



I have described the female in detail on account of its interest in 

 connection with Emery's contention (in Sarasin and Roilx, Nova 

 Caledonia. Zool., 1914, 1, p. 407 nota) that rufipentris is really a 

 Monomorium, mainly because the worker is smooth and shining and 

 has a slightl}^ pedunculate petiole. Although my specimen is not 

 accompanied by workers, Forel's recent discovery (Tijdschr. ent., 

 1915, 58, p. 23) of all three phases of a new variety of this ant, var. 

 simahtrana from Simalur, a small island off the west coast of Sumatra, 

 shows that the Bornean female must belong to the tA-pical riifiirnfris 

 or one of its varieties. The worker simalurana varies from 3-7.9 mm. 

 in length, the female measures 12-12.5 mm. and the male only 4.4 mm. 

 These extraordinary differences in stature are comparable to those 

 previously noted by Forel (Philippine journ. sci., 1910, 5, p. 125) in 

 V. ohlonga subsp. dispar, the worker of which measures 3.2 mm., the 

 female 8 mm., the male 3.8 mm. Certainly the female of what I take 

 to be the t\'pical rufitentris described above and that of the var. 

 simalurana, which is merely somewhat larger and very slightly differ- 

 ent in other respects, must be regarded as belonging to Vollenhovia. 

 It is, moreover, closely related to I", sfriato punctata Mayr, known 

 only from the female (9-10 mm. long), and considered by Emery as 

 probably the female of V. ohlojiga subsp. laemthorax Emery (loc. cit., 

 p. 406). In some species and subspecies of Vollenhovia, however, 

 the female is only slightly larger than the worker, e.g., in V. emeryi 

 Wheeler of Japan and in a Bornean subspecies of V. banksi Forel 

 described below. 



91a. Vollenhovia oblonga Smith var. rufescens Emery. 



Vollenhovia rufescens Emery, Bull. Soc. ent. France, 1894, p. 69, ^ . 

 Vollenhovia oblonga var. rufescens Emery, in Sarasin and Roux, Nova Cale- 

 donia. Zool., 1914, 1, p. 406, S . 



Type-locality: Pulo Laut, Borneo. 

 Borneo (Coll. Emer}). 



