COLLECTED IN BOBNEO, ETC. 81 



hyaline and yellowish ; the nervures scarcely discernible ; the hinder 

 margin of the metathorax slightly emarginate its entire width, with 

 an acute spine at each of the lateral angles. The nodes of the ab- 

 domen rugose ; the first node oblong-quadrate ; the second nearly 

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

 thinly sprinkled with erect whitish hairs. 

 Hab. Borneo (Sarawak). 



2. Cataulacus horridus. C. niger; capitis angulis posticis spino- 

 sis ; marginibus capitis crenulatis ; thorace aspere sculpto, spinis dua- 

 bus acutis elongatis postice armato ; abdomine ovato, basi striato. 



Worker. Length 3 lines. Black ; the antennae short, thick and clavate ; 

 the apex rufo-testaceous ; head reticulated, produced before the eyes 

 and widely truncated, the lateral angles of the truncation rounded ; 

 the lateral margins with a short spine before the eyes j the vertex with 

 the posterior margin emarginate its entire width, forming at the lateral 

 angles large acute spines. Thorax : ruggedly sculptured on the disk, 

 narrowed to the apex of the mesothorax, which is separated from the 

 hinder portion by a deep transverse incision ; produced posteriorly at 

 the angles into long, stout, acute spines ; the nodes of the abdomen 

 rugose ; abdomen rounded, emarginate and striated at the base ; the 

 entire insect sprinkled with short erect white setse. 



Hab. Borneo (Sarawak). Malacca. 



3. Cataulacus reticulatus. C. niger, delicatule reticulatus, 

 praesertim in abdomine ; marginibus capitis thoracisque lateribus 

 crenulatis ; thorace spinis duabus validis postice armato, . 



Worker. Length H-2 lines. Black ; head and thorax reticulated ; 

 antennae short, thick and clavate ; the clypeus widely emarginate ; 

 the sides of the head produced into a sharp angle in front of the eyes ; 

 behind the eyes the margin is crenulated, the posterior lateral angles 

 acute. Thorax : the anterior margin slightly rounded ; the sides 

 rounded and narrow to the metathorax, with a short tooth anteriorly 

 and posteriorly; the thorax produced behind into two elongate, lateral, 

 acute spines ; the anterior tibiae and tarsi and the apical joints of the 

 intermediate and posterior tarsi, ferruginous. Abdomen : oval, mar- 

 gined, emarginate in front and very delicately reticulate. 



Var. a. minor. The scape, apical joint of the flagellum, the margin of 

 the head before the eyes and the legs, ferruginous. 



Hab. Borneo (Sarawak). 



This species somewhat resembles the C. Taprobance, but is different in 

 sculpture and form. 



Gen. Mebanoplus, Smith. 



1. Meranoplus castaneus. M. castaneo-rufus ; capite thoraceque 

 subrugosis ; metathorace bispinoso ; pedunculi nodo secundo spina 

 postice armato. 



