ART. 20. ICHNEUMON-FLIES OF TRIBE PANISCINI CUSHMAN. 27 



basal ones. First tergite long, nearly four times as long as wide at 

 apex; second tergite two-thirds as long as first, nearly twice as long 

 as wide and nearly parallel-sided; sheatli slightly shorter than first 

 tergite. 



Rufo-testaceous with head, including vertex, more yellowish; 

 wings hyaline, veins dark, stigma pale testaceous and costa stra- 

 mineous. 



Type-locality. — Santa Rita Mountains, Arizona. 



Paratype-locality. — Mountain View, California. 



Type.— Cat. No. 25984, U.S.N.M. 



Described from two females, the type taken by E. A. Schwarz 

 and the paratype in June, 1892, by E. M. Ehrborn. 



The paratype is uniformly paler than the type. It lacks the 

 antennae. 



PANISCUS IMMACULATUS Morley. 



Paniscus immaculalus Morley, Rev. Ichn. Brit. Mus., pt. 2, 1913, p. 109. 



This species is unknown to me, but its description is very sug- 

 gestive of what I consider suhfuscus Cresson from the West Indies. 

 The latter differs from Morley's determination of the same species 

 in its yellow vertex and very narrow temples; it is represented in 

 the National Collection by one female specimen from Florida and 

 eleven, including both sexes, from the West Indies. 



It may, on the other hand, be a synonym of ocellatus Viereck, in 

 which the transverse aciculation of the propodeum is sometimes 

 almost entirely replaced by dense punctuation. 



PANISCUS BREVICORNIS, new species. 



In spite of the conspicuously short and short-jointed antennae, 

 specimens of this species have been confused in the national col- 

 lection with geminatus (Say) . 



Female. — Length 13.5 mm.; antennae 10 mm. 



Stout; temples gibbous, nearly as broad as eyes; ocelli distinctly 

 though briefly separated from eyes, postocellar line nearly as long 

 as diameter of lateral ocellus; frons distinctly narrower than face'; 

 eyes shallowly emarginate; face parallel-sided, much broader than 

 long, with fine but distinct, well separated punctures, the interspaces 

 very finely shagreened; clypeus very short and broad, the basal 

 groove deep and nearly straight, broadly arcuately truncate at apex, 

 the margin slightly reflexed, surface coarsely and sparsely punctate; 

 occipital carina complete except for a median interruption about as 

 long as postocellar line; antennae short, rather stout, scape nearly 

 as thick as long, first joint of flagellum hardly three times as long as ' 

 thick at apex, very nearly as long as second and third combined, 

 middle joints only slightly longer than thick. Thorax shining; 

 pronotum laterally irregularly striate; mesoscutum very finely and 

 rather sparsely punctate; notauli deep anteriorly but fading out on 



