128 



a 3 . First flattened joiut of pedicel 

 with the sides angular in the 



middle C. dohrni, p. 139. 



b 3 . First flattened joint of pedicel 

 with the sides not angular, 



rounded C. artifex, p. 139. 



b 2 . Metanotal spines very thick at base, 

 apex directed backwards and in- 

 wards C. rothneyi, p. 140. 



b'. Metanotal spines distinctly longer 



than metanotum. 

 a' 2 . Pronotum reticulate. 



a 3 . First flattened joint of pedicel 

 as broad as long, the sides 



angular in the middle C. royenkoferi, p. 141. 



b 3 . First flattened joint of pedicel 

 distinctly longer than broad; 

 the sides nearly straight, slightly 



curved outwards O. himalayana, p. 143. 



b' 2 . Pronotuin longitudinally striate. 

 a 3 . Mesonotum with a medial longi- 

 tudinal carina C. moydiliani, p. 144. 



b 3 . Mesonotum not carinate in the 



middle. 



a 4 . First flattened joint of pedicel 

 with the sides strongly 

 arched, nearly semicircular . C.jlava, p. 142. 

 b*. First flattened joint of pedicel 

 with the sides straight, not 

 arched C. perekgans, p. 142. 



B. Metathorax remarkably broad, massive 

 and swollen, no metanotal spines. 



a. Metathorax yellow C. inflata, p. 145. 



b. Metathorax black or dark castaneous 



brown. 



a'. Meso-metanotal suture distinct, but 

 not very deeply marked ; base of 

 metanotum above level with meso- 

 notum C. diffonnW) p. 145. 



b'. Meso-metanotal suture deep and 

 broad ; base of metanotum trans- 

 versely raised and gibbous, higher 

 than mesonotum C. physothora.i; p. 146. 



144. Cremastogaster wroughtoni, Forel, Rev. Suisse Zoof. x (1902), 

 p. 206, $ . 



. Brownish or reddish yellow, the posterior three-fourths of 

 the abdomen brown ; pilosity yellowish, abundant, fine aud long ; 

 head, thorax and abdomen smooth and shining in the $ min. ; 

 the cheeks, clypeus, and basal portion of the metanotum longi- 

 tudinally striate in the -maj. ; the thorax and pedicel sometimes 

 slightly punctate- reticulate. Head much broader than long, 

 slightly emargiuate posteriorly, the occipital broader than the 

 anterior margin; mandibles rugose at base ; clypeus broad, convex 



