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1U4 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxih. 



Subfamily T. LYSIOGNATHINvE. 



1895. I/iisiognaOi'mx, Subfamily I, Proc. Ent. Soc. Wash., Ill, p. 277. 



This subfamily is separated from the Alysiinw, with v/hich it agrees 



in ha\'iiio- three cubital cells, by having two distinct recurrent nervures. 



It is represented at present by a single genus distinguished as follows: 



Head aubquadrate, seen from in front wider than long, the vertex bilobed; clypeus 

 narrowly transverse; mandibles widely separated, bidentate at apex, and spread- 

 ing Avide open as in Alysia; abdomen sessile, in outline oblong-oval, suV)com- 

 pressed at apex and ending in a prominent ovipositor; second cubital cell in 

 front wings small, oblique, subrhomboidal, similar to the areolet in Pimpla. 



(814) LysiognatJia Ashmead. 



Subfamily 11. ALYSIIN^E. 



1862. Alysioidx, Family 25, Forster, Verb. d. naturh. Yer. pr. lilicinl., XIX, 



pp. 229 and 263. 

 1885. Alysiides Marshall, Tr. Ent. Soc. Lond., p. 11. 



1887. Alysiime Ceesson, Syn. Hym. North America, p. 62. 



1888. Alysiidx Marshall, Species des Hym. des Braconides, I, p. 67. 



1900. Alymnse, Subfamily II, Ashmead, Smith's Insects of New Jersey, p. 585. 



The wings in this tribe have only one recurrent nervure and three 

 cubital cells, the latter being the only character to distinguish it from 

 the Dacnusince. In it are included all wingless or subapterous forms. 



Two minor groups or tribes have been recognized, distinguished by 

 venational characters, as follows: 



TABLE OF TRIBES. 



Winged forms 2 



Wingless forms Tribe II. All(eini 



2. Front wings with a large, distinct stigma, which is triangular, oval, or subovate, 

 never linear or narrowly lanceolate; hind wings with a recurrent nervure, 



and also most frequently with a radius Tribe I. Alvsiixl 



Front wings with the stigma linear or narrowly lanceolate, never l>road; hind 

 wings without a recurrent nervure and usually without a radius. 



Tribe II. Allcenl 



Tribe I. ALYSIINI. 



In this tribe are placed all winged forms having a large, distinct, 

 triangular, oval, or subovate stigma, never with a linear or narrowly- 

 lanceolate stigma, and always having a more or less distinct recurrent 

 nervure in the hind wings. 



Twenty-seven genera, with these characters, are tabulated below: 



TABLE OF GENERA. 



Second abscissa of radius shorter than the first transverse cubitus, very rarely as long 

 or a little longer 2 



Second abscissa of radius much longer than the first transverse cubitus 13 



2. Second transverse cubitus always distinct 3 



Second transverse cubitus incomplete or subobsolete. 



(815) Asyntadu.^ Marshall. 



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