MYRMIC.V. — •APH.EN'OGASTEK. 260 



abdouitiii, shorter aud oblique on the antenna? and legs. Head 

 convex, broadly suboval, with a distinct posterior margin: man- 

 dibles finely longitudinally striate, the masticatory margin denti- 

 culate, the apical tooth very acute ; clypeus somewhat diamond- 

 shaped, slightly convex in the middle, the apex anteriorly pro- 

 duced but obtuse, the posterior margin rounded ; antennul carinas 

 short, wide apart ; antennae not so long as in M. inezce, the scape 

 not passing beyond the top of the head. Thorax elongate, im- 

 pressed at the meso-metanotal suture ; the basal portion of the 

 metanotuui rectangular above, the spines long, pointing backwards 

 and slightly curved, the apical portion concave and smooth. Pedicel 

 elongate, the nodes rugulose ; the 1st node with a short petiole 

 anteriorly, posteriorly constricted, longer than broad, subcubical ; 

 2nd node quadrate, the angles rounded, convex above, as broad 

 as long ; abdomen oval. 



Length, g 5'5-5 mm, 



Hab. The Himalavas along their whole length and above 

 4000 ft. {Smythies S,- Mdller). 



309. Mynnica smythiesi, Ford, Rev. Suisse Zool. X (1902), p. 226. 



5 . Closely resembling M. ruyosa, Mayr, but smaller, of slighter 

 build, and typically a clear reddish brown, varying however to 

 black. The whole insect is more shining than M. rugosa, with 

 the sculpture similar but more feeble, and the pilosity more sparse, 

 the scape being nearly smooth and shining, the legs having a 

 close oblique pubescence. It differs also from M. rugosa in the 

 flagellum of the antennae being more clavate, the mesonotum 

 higher and more convex, the meso-metanotal suture more strongly 

 impressed above, and the metanotal spines shorter. Pedicel : the 

 1st node is proportionately thicker, and the 2nd not so broad, 

 both nodes are longitudinally rugose and punctured ; abdomen 

 smooth and shining. 



Length, ^ 3'5-4-5 mm, 



Hab. jN',AV. Himalavas above 7000 ft. (>S^//(*/'^*''^s) : Sikhim above 

 4000 ft, (Mdller). 



Var, rupestris, Forel, is black with the sculpture coarser and 

 more pronounced. 



The race carbonaria, Porel, seems to me only a still smaller, 

 more slender form of smi/thiesi var. riqjestris, and to differ chief!}" 

 in having rather long and divergent spines. 



Genus APH,S:N0GASTER*. 



Mvrmica, pt., Lucas, Explor. Sc. Ah/erie. Zo'd. iii (l'S46), p. 301, 

 pi. 16, fig. 10, 5 . 



* Professor Emery (Zool. Jahrb. Syst. viii. 1895, p. 297) has quite rightly 

 placed Apha'nofjader, Mayr, Isrhnomyrmex, Mayr, and Messor, Forel, as sub- 

 genera under Westwood"s genus Stcnamma. Typical Stenamma is not, so far 

 as I know, found iu India, Burma or Ceylon, while forms of both Aphceno- 

 gastcr and of Messor occur. I have preferred, therefore, to consider these two 



