134 HYMENOPTERA. 



ferruginous. Abdomen ovate, narrowed at the base, which is 

 slightly rufous ; the nodes of the petiole rugose, the first elon- 

 gated, the second subglobose ; the first node is produced in the 

 middle above into a short acute spine, and it has also a spine at 

 its base beneath. 



Female. Length 6^ lines. Of the same colour as the worker : 

 the head rather more elongate-quadrate ; the thorax elongate- 

 ovate, sculptured as in the worker ; wings subhyaline, the ner- 

 vures pale rufo-testaceous, the stigma fuscous ; the femora swollen 

 as in the worker ; the basal node is raised in the middle to a 

 sharp transversely rounded edge, not spined; beneath, at its base, 

 is a flattened acute tooth : otherwise like the worker. 



Hab. Australia (Adelaide). 



This fine species is placed provisionally in the genus Myrmecina : 

 a dissection of the parts of the mouth would determine that 

 question; it is however closely allied to that genus, if not belonging 

 to it ; the neuration of the wings only differs in their anterior 

 pair having the cubital vein and also the subdiscoidal vein con- 

 tinued to the apical margin of the wing. 



Genus 3. STRONGYLOGNATHUS. 



Eciton, Schenck, Beschr. Nass. Ameis. 117 (1852). 

 Myrmus, Schenck, Ent. Zeit. 299 (1853). 

 Strongylognathus, Mayr. Form. Austr. 159 (1855). 



Maxillary palpi 4-jointed, labial palpi 3-jointed. Anterior wings 

 with one incomplete marginal cell, one submarginal and one dis- 

 coidal cell. Mandibles narrow, arcuate, smooth, and with the apex 

 acute. Antennae of worker 12-jointed, the club consisting of 3 

 joints. 



1. STRONGYLOGNATHUS TESTACEUS. 



Eciton? testaceus, Schenck, Beschr. Nass. Ameis. 117. 

 Myrmus emarginatus, Schenck, Ent. Zeit. 299. 

 Strongylognathus testaceus, Mayr. Form. Austr. 158; Unaar. 

 Ameis. 20. 1. 



Nyl. Form. Fr. et d'Alaer. 101. 1. 



Hab. Europe; France; Austria. 



Genus 4. CREMATOGASTER. 



Formica, pt., Oliv. Encycl Meth. vi. 497 (1791). 

 Myrmica, pt., Latr. Rist. Nat. Fourm. 261 (1804). 



