hi i.i.i. 1 1\ \n BEU1I 01 I 01IPARA nVl E0< >] OGY. 



impression strong. Base of epinotum oonoave, strongly margined 

 and in front; spines strong, as long ai the base and much longer than the 

 declivity, straight, divergent; inferior -pun- elongate and Blightly curving 

 upward. Petiolar node longer than peduncle, anterior lace abrupt, dona] 

 surface long and Bloping; from above, subquadrate, longer than bi 

 gibbous in front at middle and depressed behind, the depression crescent- 

 shaped and strongly margined behind. Postpetiole broader than petiole, a 

 little broader than long and narrowed posteriorly. 



Ki<;. 20. — Rogeria (Irogara) rugosa Mann. Worker. Lateral wen of thorax ;»n<l petiole. 



Head and thorax feebly, gaster strongly shining. Mandibles shining, finely 

 punctate and, at basal half with delicate striae. Front and vertex with strong, 

 irregular, longitudinal striae, the surface between the striae rugulose; striae of 

 side-, scrobes, and occiput irregular, subconcentric. Pro- and mesonotum 

 rugulose, with irregular, interrupted, longitudinal striae. Epinotum finely 

 and superficially rugulose and shining. Petiole and postpetiole irregularly and 

 coarsely eostate, the eostae on the postpetiole reticulate and enclosing fov.eo- 

 late pits. Gaster with fine and regular punctation. 



Long and fine erect hairs abundant on body, especially the gaster. Hairs 

 on appendages shorter and semierect. 



Black, mandibles red, appendages yellowish brown. 



Viti Levu: Nadarivatu. 



Near strialella but larger and more coarsely sculptured, without 

 well-defined antennal scrobes and with the inferior epinotal spines 

 long and pointed, in strialella these are short and more rounded api- 

 cally. Type — M. C. Z. 8,707. 



The colonies are small and live beneath stones or in the ground. 

 The workers are very slow-moving. 



Key to Melanesian Species of Rogeria. 



1. Epinotal spines weak, shorter than their distance apart at base. Meso- 

 epinotal suture feebly impressed 2 



Epinotal spines large, longer than their distance apart at base. Mesoepino- 

 tal impression deep and wide 5 



