NO. 1206. ICHNEUMON FLIES— ASHMEAD. 123 



the latter tribe, })y the absence of any trace of a flividini;- ricrx itrc in 

 the anal cell and by the longer tibial spurs. 



Four genera are placed in the tribe, as follows: 



TABLE OF GENERA. 



Marfiinal cell neither large nor extending to tip of the wing, tlie radius reac^hiiig the 



costal margin much before the tip 2 



Marginal cell large, extending to the tip of the wing. 



(951) HijuienorJidotda Dalle Torre. 



2. Finst abscissa of the radius much shorter than the transverse cubitus, the mar- 



ginal cell not very broad at base; subdiscoidal nervure originating usually 



heloto the basal thii-d of the discoidal nervure 3 



First abscissa of the radius long, nearly as long as the transverse caibitus, the 

 marginal cell therefore very Ijroad at base; subdiscoidal nervure originating 

 from the basal third of the discoidal nervure. 



(952) Oreshnus Ashmead, new genus. 

 (Type, Eubadizon maculivenlris Cresson.) 



3. Submedian cell not longer than the median, equal or a little shorter, the trans- 



verse median nervure interdilkd or nearly with the basal nervure. 



(953) Orgilohiurpha Ashmead, new genus. 



(Type, Ganyeliorus gelirhiiv Ashmead.) 



Sulimedian cell usually somewhat longer than the me<lian, the transverse 



median nervure uniting with the median vein beyond the origin (jf the basal 



nervure (954) Orgilus Ilalida}'. 



Tribe III. CALYPTINI. 



1862. Br achistokLv, Family 17, Forsteu, Verb. d. naturh. Ver. ])r. Rheinl., XIX, 



pp. 229 and 253. 

 1882. Liophronoidse, Family 19, Forster, Verb. tl. naturli. Ver. pr. Rheinl., XIX, 



PI). 229 and 254. 

 1885. Ci-ypiides Marshall, Trans. Ent. Soc. Lond., p. 10. 

 1887. Calyptina', Subfamily Cresson, Syn. Hym. North America, pp. 54-55. 

 1900. Ccdyptini, Tribe I, Ashmead, Smith's Insects of New Jersey, ]>. 590. 



This tribe is distinguished from the former by the second abscissa 

 of the radius T)eing always more or less arcuate, never straight, and 

 never forming a straight line with the transverse cubitus; by the 

 anal cell being most frequently divided by transverse nervures or 

 traces of nerviu'es, rarely normal; and l)y the short tibial spurs. 



The group is closest allied to the next, or the Sif/alj)hl/uv through 

 the genus Calyptiis Haliday. 



There has been the greatest confusion in regard to some of the 

 names of the genera placed in this group and I am ]>v no means satis- 

 tied that I have correctly identified the genera. 



Nees's original description of LeIopJurm could apply only to a form 

 similar to Centistes Haliday, although he afterwards included other 

 forms. Forster's conception of this genus was, therefore, evidently 

 correct and ma}' yet prevail. 



The species placed in Leiophroii hy American students l)elong to the 

 genus BracMstes Wesmael, as defined In my table. 



