STEEEOMYRMEX. 219 



11-jointed, joints 3-8 very short indeed and massed together, 

 9-11 forming the club, of which the apical joint is longer than the 

 other two ; eyes not large, placed about the middle of the sides of 

 the head. Thorax above without sutures, gently curved and 

 convex, the sides flat, vertical and margined above, pronotal 

 lateral angles prominent ; thorax slightly constricted just in front 

 of the metanotum, the basal portion of which is rectangular, the 

 lateral angles with two slightly divergent horizontal spines. 

 Pedicel : the 1st joint rather thick with the hind portion raised 

 into a transverse scale-like node, rounded above ; 2nd node trans- 

 verse, broader than long ; abdomen broadly oval. 



; ' J Head rounded. Mandibles triangular, dentate. Clypeus 

 obtusely angled, slightly produced between the antennae as in 

 the $ . Antennae 11-jointed ; scape short, 2nd joint small, 3rd 

 larger than the 2nd or 4th, 7th to 10th globose, the latter portion 

 thereby resembling a rosary of beads. Mesonotum convex, with 

 deep converging grooves. Scutellum and metanotum falling 

 steeply to the sloping epinotum, the latter unarmed, with long 

 basal portion and vertical flat apical portion. First joint of the 

 pedicel broadening posteriorly, seen from above triangular ; second 

 joint oval. The stipes in the genital armature are long, gradually 

 conical, the two together forming a pair of forceps. Front wing 

 with a closed radial and a closed cubital cell, but no discoidal 

 cell." (Neuration of the Myrmecina-type.) 



254. Stereomyrmex horni, Emery, Deutsch. ent. Zeit. 1901, p. 116. 



$ . Eeddish yellow, the flagellum of the antennae and the legs 

 paler yellow ; " head, thorax and pedicel minutely granulate, 

 opaque ; abdomen smooth, slightly shining ; pilosity exceedingly 

 sparse, almost wanting, a few erect hairs on the anterior portion 

 of the face, the legs in part, and on the abdomen posteriorly ; 

 pubescence silvery in certain lights, dense and very short. The 

 rest as in the characters for the genus. 



" rf. Brown, in parts darker. Head black, opaque, rugosely 

 punctured, the rest shining. Legs brighter brown ; the mandibles, 

 the first two joints of the antenna? and the apex of the abdomen 

 brownish yellow. Legs and antennae with longer pubescence ; 

 head, thorax and abdomen with long oblique brush-like hairs. 

 The form of the epinotum as given in the characters for the genus. 

 Wings greyish, with brown nervures." (Emery.) 



Length, $ 2-5 ; tf 3'2 mm. 



ffab. Eecorded from Ceylon. 



I owe two specimens of this rare ant to the kindness 

 Prof. Emery. 



