70 Mr. F. Smith's descriptions of new species 



Worker. — Length 2 lines. Resembles the female in 

 colom^ation, the thorax being compressed posteriorly, the 

 abdomen not so deep a black; in some examples fusco- 

 ferruginous, with the margins of the segments paler. 



Male. — Length 2 lines. Head orbiculate, black and 

 shining, with the anterior portion, the mandibles and 

 antennse pale rufo-testaceous. The thorax and abdomen 

 obscure rufo-ferruginous and shining ; legs rufo-testaceous ; 

 wings subhyaline, the nervures pale fuscous; abdomen 

 one-third longer than the head and thorax ; the first node 

 of the peduncle, which is very short, subglobose ; the 

 second twice the size of the first, and only a little narrower 

 than the first segment; the basal margins of all the 

 segments testaceous. 



The descriptions are made from the typical specimens, 

 from Ceylon, Mr. Walker's being too brief, in my opinion, 

 for the separation of the species from others closely re- 

 sembling Sima allahorans. 



10. Tetraponera petiolata. 



Female. — Length 4| lines. Black and shining ; the 

 head and thorax with fine distant punctures. The scape 

 and first joint of the flagellum ferruginous. Thorax 

 oblong ; the prothorax rounded in front, with the sides 

 parallel; the meso- and meta-thorax combined of an 

 oblong-ovate form ; the legs slender, with the claws of the 

 tarsi and the calcari^ pale rufo-testaceous. The petiole 

 of the abdomen as long as the first node, which is oblong- 

 ovate ; the second node larger and subglobose ; the abdo- 

 men as long as the head and thorax, and of about the 

 same width as the latter, and covered thinly with fine 

 hoary pile. 



Worker. — Length 3| lines. Only differs from the 

 female in being deeply constricted between the meso- and 

 meta-thorax. 



Male. — The size of the worker. Shining-black, narrow 

 and elongate. The head much narrowed behind the eyes, 

 which are large and prominent; the ocelli pale and placed 

 in a triangle on the vertex, the anterior ocellus opposite 

 the vertex of the eyes ; the antennge and tips of the man- 

 dibles rufo-testaceous; the head and cheeks with long 

 pubescence, also a little on the vertex. Thorax rather 

 more than twice the length of the head, but narrower ; 

 the tibite, tarsi and trochanters pale rufo-testaceous ; the 



