Entomological Society. 337 



1. Meranoplus petiolatus, n. sp. 



Female. Length 3| lines. Head bright ferruginous, antemise dark 

 rufo-testaceous, the thorax of the same colour, longitudinally rugose, 

 the lateral margins of the thorax parallel as far as the base of the 

 wings, whence the sides are narrowed considerably to the metathorax, 

 which has a short tooth on each side ; wings pale, nervures pale fer- 

 ruginous ; legs ferruginous ; the nodes of the abdomen subquadrate ; 

 abdomen ovate, rufo-testaceous and irregularly stained with black ; 

 beneath black and having a large rufous patch in the middle, which 

 has a black stain in the centre ; the entire insect has a thinly scat- 

 tered erect pale pubescence. 



Hub. Brazil. 



A rare species apparently ; I have only seen the single specimen in 

 my own collection. 



Cataulacus, n. g. 



Sexes three — male, female, and neuter, or worker. 



Female. The sides of the head not expanded, the eyes not con- 

 cealed ; antennae inserted before the eyes, received in repose into an 

 obHque groove or channel in the cheek ; scape of the antennae grooved 

 beneath for the reception of the basal portion of the flagellum ; wings 

 having one marginal and one complete submarginal cell, the dis- 

 coidal cells obsolete ; abdomen elongate in the female, ovate in the 

 workers or neuters. 



Male not known. 



1 . Cataulacus Taprobance, Westw. MSS., n. sp. 



Neuter. Length 2 lines. Black, the head and thorax roughly 

 longitudinally rugose, the vertex behind and a small central portion 

 of the thorax anteriorly transversely rugose ; the antennae rufo-testa- 

 ceous, the scape and extreme apex pale ; sides of the head and thorax 

 crenulated, the posterior angles of the latter armed with a stout 

 spine ; the tibiae and tarsi rufo-testaceous, the nodes of the abdomen 

 coarsely sculptured ; abdomen ovate, finely shagreened and longitu- 

 dinally and deUcately rugose at the base and sides, the rugosity con- 

 sisting of a series of raised striae, which do not reach the middle of 

 the abdomen excepting at the sides. 



Hab, Ceylon. 



This species is unique in the collection of the Entomological So- 

 ciety, to which it was presented by G. H. K. Thwaites, Esq., who cap- 

 tured it in Ceylon. 



2. Cataulacus Guineensis, Westw. MSS., n, sp. 



Neuter. Length 2f lines. Black, head and thorax longitudinally 

 rugose-striate, most deep and coarse on the thorax ; sides of the 

 head crenulate, the scape ferruginous, apical joint of the flagellum 

 testaceous, the palpi testaceous ; thorax, the anterior portion trans- 



