HYMENOPTERA. 139 



A mutilated specimen of a female was received with the worker : 

 it is of much paler colour, but is equally smooth and shining, the 

 thorax and abdomen being elongate-ovate ; the wings yellowish 

 and subhyaline, with the nervures pale rufo-testaceous. 



13. CREMATOGASTER LIMATUS. B.M. 



Worker. Length l line. Rufo-testaceous : the abdomen 

 very dark blackish-brown, except at the base, which is paler ; the 

 tarsi arid articulations of the legs very pale testaceous, nearly 

 white. The body entirely smooth and shining ; the thorax deeply 

 strangulated in the middle, the metathorax with two slender 

 acute spines ; the nodes of the peduncle clavate, the basal one 

 longest ; the abdomen heart-shaped. 



Female. Length 2f lines. Of the same colour as the worker, 

 but with the legs and the mandibles entirely pale. This sex 

 differs from the worker in having the eyes larger and more 

 prominent ; the thorax ovate, and the spines on the metathorax 

 short ; in having wings, which are colourless, with the nervures 

 pale testaceous : the nodes of the abdomen differ in form from 

 those of the worker ; the first node is clavate, with the upper apical 

 margin emarginate, the lateral angles subdentate, the second 

 node globose ,; abdomen as in the worker. 



Male. Length 1J line. Body entirely testaceous, with the 

 antennae and legs very pale ; wings colourless and beautifully 

 iridescent, the nervures pale testaceous ; the form of the thorax 

 and abdomen very similar to that of the female, but the head 

 is much smaller and narrowed behind, with the eyes very 

 prominent. 



Hab. Brazil (Ega). 



Mr. Bates says of this species, " The formicarium is in perfo- 

 rated glandular swellings in suspended air-roots of a parasitic 

 plant. I have never found Coleopterous parasites in the nests of 

 any species of this genus." 



14. CREMATOGASTER MONTEZUMIA. PL I. fig. 1. Nest. B.M. 



Worker. Length H line. Obscure brown-black, opake; the 

 abdomen shining black. Head, seen above, rotundate, eyes 

 rather prominent. Thorax deeply strangulated between the 

 meso- and metathorax, the latter widely and deeply excavated, 

 with a short acute spine on each side. The first node of the 

 peduncle, viewed in front, is oblong ; the second subglobose, with 

 a deeply impressed line above : the insect is thinly sprinkled with 

 long glittering white hairs. 



