MANN: ANTS OF THE BRITISH SOLOMON ISLANDS. 327 



55a. VoLLENHOviA DENTATA Mann, subsp. MARGINATA, subsp. nov. 



JVorkcr. Length 2 mm. 



Differing from dentata in having the teeth at margins of epinotal decUvity 

 longer and narrower. The anterior upper border of the petiohir node is dis- 

 tinctly margined. The sculpture of the promesothorax is feebler, especially 

 in the middle where it is reduced to delicate strialation. The petiole and post- 

 petiole are irregularly and finely strialate and the gaster is not punctate. 



The whole body is more shining. The color is light brownish red with the 

 appendages honey-yellow. 



Malaita: Interior. 



Described from a single worker taken at our camp at 2,300 feet 

 elevation on the trail between Atta and Fourafi. 



56. VoLLENHOVIA ELYSII, Sp. nOV. 



Worker. Length L6 mm. 



Near brevicornis Emery. Head about one and a fourth times as long as 

 broad, slightly convex at sides and concave at posterior border. Mandibles 

 5-dentate. Antennae short, their scapes extending a little less than two thirds 

 the distance to occipital corners. Promesothorax slender and flattened; 

 humeri very obtusely angulate. Mesoepinotal suture but feebly impressed. 

 Epinotal declivity at sides with a coarse margin that is elevated at middle 

 into a broad, low triangle. Petiolar node a little longer than broad; in profile 

 straight in front, rounded above anteriorly and sloping behind; ventral tooth 

 twice as broad as long and only slightly rounded at tip. Postpetiole sub- 

 globose, a little broader than petiole. 



Moderately shining. Mandibles sparsely punctate. Cljrpeus with delicate, 

 interrupted striae. Head, thorax, and base of epinotum irregularly strialate 

 and punctate. Petiole indistinctly striate transversely. Postpetiole finely 

 and shallowly punctate. Gaster with sparse piligerous punctures. 



Hairs on head and body abundant, long, and fine; on appendages shorter 

 and semirecumbent. 



Color reddish brown ; dark on head and light on gaster. 



Three Sisters: Malapaina. 



In its short antennal scapes elysii resembles brevicornis Emery, but 

 differs in the much smaller size, in having the sculpture of the thorax 

 uniform, and in the elevated angular margins to epinotal declivity. 



