366 EDWARD NORTON. 



2. T. sericeus. 



Tremex sericeus, Say, West. Quart. Eep. ii, 1S2.3, 13; Am. Ent. ii, 1525, 73, 9> 

 pi. 32, 1. 



Tremex Servillei, Brulle, Hist. Nat. Ins. Hym. iv, 045, pi. 45 fig. 2, ?. 



" F'^rruginous, wings subviolaceoiis, j)rotliorax tuberculate." Length 1.20 — 

 1.48'; with ovip. 1.30— 1.92. Br. wings 1.72— 2.36 inch. 



5. — Reddish or yellowish ferruginous; antennas IS-jointed, gen- 

 erally of one color, sometimes with a blackish band ; mouth blackish; 

 a black spot at times about the ocelli, two spots on sides of me.sothorax, 

 sutures of metathorax and the breast black (all of these spots some- 

 times wanting) ; tergum sericeous, paler, second segment yellowish; 

 cornus short, serrate, acuminate; ovipositor black, as long as abdomen 

 with cornus; sheath pale, legs darkest at base, changes of color not 

 sharply defined; wings sub-opaque, sub-violaceous, nervures yellowish. 



Tennessee, Maryland, Missouri. 



This seems more common in the Western States. In form it is pre- 

 cisely like T. cohunha, but the difference in color and marking seems 

 to be distinct. It is probable that the male will not differ much from 

 the male of T. cohunha. 



Mr. Say has described a female but figured what appears to be a 

 male. 



0. TEREDON, nov. gen. 



Wings with two marginal and four submarginal cells, the second and 

 third each with a recurrent nervure, lanceolate cell with straight or 

 slightly oblicpie cross-line, under wings Nvith two middle cells. 



^r?/e«Has fusiform, five or six-articulate; labial palpi apparently as 

 in 7'r<???jej". the second joint enlarged and truncate. Body as in Tremex, 

 ovipositor exserted, the first joint of hinder tarsi in both sexes longer 

 than tibitxj, wide, much flattened as in C/ae»"»s. but produced, at one side 

 beyond the two next tarsal joints, remaining joints short, the second 

 third and fourth, not longer together than the fifth. 



This may be considered a subgenus of Tremex^ which it resembles 

 precisely in appearance of liead and body, but from which the form of 

 the antennae and the dilated tarsi serve to distinguish it. The wings 

 are like those of Urccerns. The form of the antennas is very singular, 

 the third being shorter than the fourth, and the filth longest, unless it 

 is composed of two joints closely soldered, of which there is some ap- 

 pearance. 



1. T. cubensis. 



Trenie-r. cubensis, Cresson, Proc. Ent. Soc. Phil, iv, 1SG5, 2, 9- 

 "Length 10 lines, Br. wings 16 lines." 

 " o . — Yellowish, uiesothorax. scutelli. T)leura, anterior portion 



