HYMENOPTERA. 197 



tooth anteriorly and posteriorly ; the anterior tibiae and tarsi, and 

 the apical joints of the intermediate and posterior tarsi ferrugi- 

 nous. Abdomen ovate, margined at the sides and einargiuate 

 at the base. 



Var. minor. The scape, apical joint of the flagellum, the head, 

 before the eyes, and the legs, ferruginous. 



Hab. Borneo (Sarawak). (Coll. W. W. Saunders, Esq.) 



7. CaTAULACUS INSULARIS. 



Male. Length 3 lines. — Black : the lateral angles of the 

 vertex ))rodueed into stout acute spines ; the metathorax bispi- 

 nose. The head and thorax rugose ; the antenuEe, eyes, mandibles, 

 tibiae and tarsi, ferruginous ; the eyes large and prominent ; the 

 clypeus produced, truncate anteriorly ; the sides of the head 

 behind the eyes serrated ; beneath the lateral spines of the vertex 

 are two smaller spines ; the wings pale llavo-hyaline, the ner- 

 vures scarcely discernible ; the metathorax emarginate its entire 

 width, with an acute spine at the lateral angles. The noih's of 

 the abdomen rugose; the first node oblong-quadrate, the st rond 

 nearly quadrate ; the abdomen reddish at the base, and, as well 

 as the nodes, thinly sprinkled with erect whitish hairs. 



Hab. Borneo (Sarawak). (Coll. W. W. Saunders, Esq.) 



Genus 4. ECIIINOPLA. 



Echinopla, Smith, Proc. Linn. Soc. ii. 79 (1857). 



Head transverse ; eyes small, placed laterally, high on the 

 head, on the top of short pedestals ; antennfe 12-jointed, inserted 

 forwards on the head, wide ajiart; labial palpi 4-joiuted. the 

 three basal ones of about equal length, clavate, the apical joint 

 as long as the two j)receding joints united. Maxillaiy palpi 5- 

 jointed, elongate, the tliree aj)ical joints long and slender, the 

 two basal ones much shorter and stouter. Mandibles short, stout, 

 and of equal width throughout, armed with four teeth at the 

 apex. Thorax oblong- quadrate ; legs of moderate length; tarsi 

 5-jointed, each tibia armed with a single spine at the apex. Ab- 

 domen globose ; peduncle formed of a single node ; the first 

 segment very large, concealing the other segments beneath it. 



1. Echinopla MELANARCTOS. B.M. 



Echinopla melanarctos. Smith, I'roc. Linn. Soc. ii. 79- 1 § • 



Worker. Length 2^-3 lines. — Black : body hispid ; the palpi 

 pale testaceous ; on each side of the face anteriorly is a thin 



