140 HYMENOPTERA. 



Female. Length If line. Usually of a darker colour than 

 the worker, nearly black : the wings slightly fuscous and sub- 

 opake, the nervures pale testaceous ; the metathorax armed with 

 sharp spines ; the basal node of the petiole oblong, with the 

 angles prominent, the second node transverse and deeply notched 

 in the middle : sprinkled with white hairs like the worker. 



Male. Length 1| line. Of the same colour as the worker : 

 the head transverse ; the eyes prominent, as well as the ocelli, 

 which are placed wide apart on the vertex, the anterior one larger 

 than the posterior pair. Thorax ovate, not spined. Abdomen 

 closely resembling that of the worker. 



Hob. Mexico. 



15. CREMATOGASTER VICTIMA. B.M. 



Worker. Length 1 line. Pale rufo-testaceous : the head 

 usually rather darker than the thorax, the abdomen rufo-fuscous 

 with the base palest. The head smooth and shining ; the thorax 

 slightly roughened anteriorly, the lateral margins raised, the 

 metathorax armed with two acute spines, a deep strangulation 

 between the meso- and metathorax ; the abdomen thinly sprinkled 

 with long pale hairs. 



Hob. Brazil (Santarem). 



16. CREMATOGASTER QUADRICEPS. B.M. 



Worker. Length 2 lines. Jet-black, with the antennae and 

 articulations of the legs obscurely rufo-piceous : the head, viewed 

 in front, nearly quadrate, with the hinder angles rounded ; the 

 anterior margin of the face nearly straight, the mandibles ferru- 

 ginous at their apex ; the head rugose, with the clypeus smooth 

 and shining. Thorax rugose, the metathorax armed with two 

 long acute spines ; the tarsi rufo-testaceous. Abdomen : the 

 first node oblong, the second subovate ; the apex of the abdomen 

 very acute. 

 Hob. Brazil (Ega). 



Genus 5. MYRMICARIA. 



Myrmicaria, Saund. Trans. Ent. Soc. Lond. iii. 57. 



This genus of Ants is founded on characters derived from males 

 only : in all probability the genus Physatta, the characters of 

 which are derived from females, may prove to be the other sex of 

 Myrmicaria ; specimens of both genera have been received from 

 India, Java, and Port Natal, but it appears desirable to keep them 



