106 MB. smith's descriptions of IIYMENOPTEEOUS IKSEOTS 



This insect, which I place in Erichson's genus Amhlyopone, differs from 

 the type in the antennae being short and stout, with the flagellum club- 

 shaped ; in ^. australis they are rather slender, and the flagellum is 

 very slightly thickened at the apex ; in every other particular they agree. 



Gen. PSEUDOMYBMA, Gu^r. 



1. PsEUDOMYRMA LiEViCEPS, Smith, Proc. Linn. Soc. iii. 1^5. ^. 

 Hub. Dory; Aru. 



2. PsEUDOMYRMA MODESTA. P. rufo-pallida, laivis, nitida ; abdo- 

 mine nigro. 



Worker. Length If line. Pale rufo-testaceous ; the head oblong; 

 the eyes large and ovate ; the flagellum clavate ; the club three- 

 jointed. Thorax oblong, narrowed posteriorly, with the metathorax 

 comjn-essed above ; the legs short and stout. Abdomen black and 

 ovate; the first node of the peduncle petiolated, the second pear- 

 shaped, both of a pale rufo-testaceous colour. 



Hab. Bachian. 



3. PsEUDOMYRMA NITIDA. P. nigra, nitidiuscula ; antenuis, tibiis, 

 tarsisque pallide testaceis. 



Worker. Length If line. Jet-black, smooth and shining ; eyes very 

 large, ovate, and about half the length of the head ; the antennss and 

 mandibles pale testaceous ; a faintly-impressed line extends from the 

 insertion of the antennae to the vertex. The thorax narrowed poste- 

 riorly, and deeply strangulated between the pro-, meso-, and meta- 

 thorax ; the tibiae and tarsi pale testaceous. Abdomen ovate : the 

 first node of the peduncle petiolated, the second subglobose. 



Hab. Bachian. 



Gren. Mesoxeka, Smith. 



Head suborbiculate, a little wider than the thorax ; eyes round, promi- 

 nent, situated in the middle at the sides of the head ; ocelli obsolete in 

 the worker ; anfennce geniculated, the scape one-third shorter than the 

 flagellum ; the flagellum 11 -jointed, gradually increasing in thickness 

 from the basal to the apical joint, the latter pointed at its apex ; the 

 maxillary palpi 6-jointed, the first joint minute, the rest elongate. 

 Thorax oblong, the sides nearly parallel, the anterior and posterior 

 margins slightly rounded ; the divisions between the pro-, meso-, and 

 metathorax not perceptible, or monomerous ; legs of moderate length, 

 the calcaria at the apex of the intermediate and posterior tibiae very 

 shoii;. Abdotnen subovate ; the basal segment very large, nearly con- 

 cealing the following ones ; the peduncle with a single node, the node 

 incrassate, nearly as wide as the thorax, truncate anteriorly and 

 rounded behind. 



Tlie characters laid down for this remarkable genus are drawTi 



