of Pseudomyrma and Tetraponera. 67 



ferruginous, the stigma fuscous. Abdomen darker than 

 the head and thorax ; the first node with a short stout 

 petiole, the apex swollen ; the second wider and sub- 

 globose ; the apex pointed ; the margin of the second seg- 

 ment narrowly pale ferruginous. 



Hab. — St. Paulo (Brazil). Type in British Museum. 



57. Pseudomyrma sedula. 



Male. — Length 5 lines. Dark fusco-ferruginous ; the 

 head beneath, the face, mandibles, and basal joint of the 

 antennas, yellowish-white ; the sides of the thorax, beneath, 

 and also the legs of the same colour ; wings hyaline and 

 brightly iridescent, the nervures rufo-testaceous, the stigma 

 fuscous. Abdomen elongate, the first node petiolate, 

 swollen at its apex ; the second somewhat pear-shaped ; 

 the abdomen covered Avith a fine white sericeous pile ; 

 beneath yellow- testaceous. 



Hah, — St. Paulo (Brazil). Type in British Museum. 



58. Pseudomyrma Jlavicornis. 



Worker. — Length 3 lines. Head black, thorax and 

 abdomen rufo-fuscous ; the antennas, mandibles and tarsi 

 reddish-yellow. Head oblong, narrowed anteriorly and 

 posteriorly ; eyes large and oblong-ovate. The thorax 

 strangulated in the middle ; the sutures, and the sides of 

 the thorax redder than the disk ; the metathorax obliquely 

 rounded to its apex ; the articulations of the legs reddish. 

 The first node of the abdomen with a short pale ferruginous 

 petiole, the node subglobose ; the second node larger and 

 subglobose ; the apex of the abdomen pointed and pale 

 ferruginous. 



Hab. — Nicaragua. 



59. Pseudomyrma elongata. 



Worker. — Length 2| lines. Pale ferruginous and slightly 

 shining ; head large, much wider than the thorax or 

 abdomen, oblong, narrowed anteriorly and posteriorly ; 

 eyes large, oblong-ovate and black. Thorax naiTow, 

 elongate, sti*angulatcd in the middle, rounded at its anterior 

 and posterior margins. Abdomen : the first node pctiolatcd, 

 clavate ; the second subovate ; the first segment with a 

 dusky lateral spot at the basal margin ; the two folloAving 

 segments dusky at their basal margins. 

 JIah. — INIexico. 



