OF HTMENOPTEEA TKOM SUMATEA, ETC. 71 



G-eu. Pachtcondtla, Smith. 



1. Pachycondyla MELANCHOLiCA. P, nigra, opaca ; antennis, man- 

 dibulis, tibiis tarsisque ferrugineis. 



Worker. Length 3 lines. Opake black, the second and following seg- 

 ments of the abdomen finely shagreened ; the head oblong ; the eyes 

 small, not prominent, and situated near the base of the mandibles ; the 

 sides cm'ved, the vertex transverse; the sides of the thorax nearly 

 parallel, the metathorax obliquely truncate ; the node of the peduncle 

 rounded anteriorly, truncate posteriorly, and filling the base of the 

 first abdominal segment, but not quite so wide, rugose above. The 

 mandibles, antennae, tibiae, tarsi, and knees ferruginous. 



Hah. Morty Island. 



This species belongs to the genus FacTiycondyla of my Catalogue, 

 the insects included in which have the body almost parallel, as 

 well as the node of the peduncle, and the calcaria pectinate. 

 Some continental authors have sunk this well-defined genus. 



G-en. EcTATOMMA, Smith. 



1. EcTATOMMA RUGOSA, Smith, Proc. Linn. Soc. iv. p. 143. 

 Hab. Sula. 



Gen. Anomma, Shuck. 



1. Anomma erratic a, a. nigro-ferruginea ; capite antice et abdo- 

 mine basi pallide ferrugineis ; flagello pedibusque ferrugineis. 



Worker. Length 2 lines. Obscurely ferruginous ; the anterior portion 

 of the head, the mandibles, apex of the scape, and the flagellum pale 

 ferruginous ; the scape black ; the mandibles with a single tooth inside, 

 their apex curved and very acute. Thorax compressed; the legs fer- 

 ruginous, the tibiae and tarsi palest; the legs elongate. Abdomen 

 ovate, the node of the peduncle and the first segment paler than the 

 following segments. The insect impunctate, very smooth and shining. 



Hab. New Guinea. 



This species is distinguished from the three species of the genus 

 with which I am acquainted by the following particulars : the an- 

 tennae are proportionally longer, the scape black, and the legs 

 considerably more elongate. 



The discovery of this genus in the Eastern Archipelago is, geo- 

 graphically, a circumstance of considerable interest, all the species 

 previously known being African. Several hymenopterists have 

 adopted the supposed affinity between Anomma and Borylus, re- 

 garding the former as worker or neuter forms of the latter. This 

 affinity was first suggested by Dr. Savage, but I am not ac- 

 quainted with a single circumstance even apparently confirmatory 

 of such a supposition. The genus Dorylus is very abundant in 



