EPIRHYSSA. 87 



Genus EPIRHYSSA, Cms. 



Epirhyssa, Cresson, Proc. Ent. Soc. Philad. 1865, p. 39. 

 Rhyssonota, Kriechbaumer, Ann. Nat. Hofmus. Wien, 1890, p. 489. 



GENOTYPE, E. speciosa, Cress. 



A genus of very large and strongly elongate species, with trans- 

 striate inesonotuin and the terebra longer than the whole body. 

 Head short, subbuccate and transverse, usually dilated behind the 

 oval and subreniform eyes ; clypeus veiy short, strongly trans- 

 verse and apically subproduced centrally, often basally discrete ; 

 mandibles stout and basally broad. Antennae slender and filiform, 

 not attenuate ; flagellar joints elongate. Thorax subcylindrical 

 and discally deplanate ; mesonotum closely and regularly trans- 

 strigose throughout, with the notauli entire and often deeply 

 impressed ; metanotum longitudinally canaliculate, with the 

 spiracles oblong or ovate, and the areas obsolete. Scutellurn 

 subconvex. Abdomen cylindrical, sessile, smooth and uitidulous, 

 obsoletely alutaceous ; ventral valvulae of cf exserted ; anus of $ 

 subcompressed, third segment not basally impressed, eighth 

 exserted and triangular, hypopygium not reaching base of 

 terebra. Legs, and especially the hind ones, elongate, with 

 tarsal claws simple and posterior coxte subcylindrical. Wings 

 ample, though not broad, with areolet entirely wanting ; nervellus 

 intercepting recurrent nervure close to its junction with the 

 median vein. 



Range. In. America the genus has a wide distribution, from 

 Brazil to Canada, and is also found in Cuba ; but elsewhere, the 

 representatives here enumerated, with a few from the Malay 

 Region, are the only ones at present known from the Old AVorld, 

 with the exception of single Japanese and Annamese species. 



This genus differs from Rhyssa, to which it is closely related in 

 its strongly trans-striate mesonofcuin, in having the alar areolet 

 entirely wanting. 



Table of Species. 



1 (2) Abdomen and legs not black-marked .... flavobalteata, Cam., 



2 (1) Abdomen and legs broadly black-marked. [p. 88. 



3 (4) Frons carinate ; scutellum punctate ; 



abdomen mainly red carlnifrons, Cam., 



4 (3) Frons not carinate ; scutellum strtate. [p. 89. 



5 (6) Abdomen Savons ; scutellum apically 



black ; all femora immaculate maculicornis, Cam., 



6 (5) Abdomen fulvous ; scutellum pale ; all [p. 89. 



femora black-marked ornatipes, Cam., 



[p. 90. 



