J. CHESTKK BRADLEY. 117 



striolatiini, punctulis disjiersis valde inconspicuis, post suturani crenulataiii ten- 

 uissime transverso- rugulosum sive tenuissime coriaceuni. Segnienturu teuuiter 

 reticulato-rugosiim, postice in medio loiigitudinaliter carinulatum. Cosse poste- 

 riores opaose sive tenuissime scabiae. Teiebra abdomine brevior, abdominis 

 petiolo longior, vaginis nigris, apice alliis. Nigrum, pedibus quatuor anticis 

 brunesceiitibus, tibiis, imprimis posterioribus ad basin albo-sigiiatis. 



This species I have not seen. It is closely related to F. incertas, 

 but the ovipositor is about the length of the abdomen. 

 Hab. — British Columbia (Yale). 

 Type. — In k. k. Nath. Hofm. in Vienna. 



Foenus pensilis Schletterer. 

 1889. Gasteruption pensile Schlett., 9, Ann. k. k. Nath. Hofm. Wien, iv, p. 483. 



"9- L. 10-11 mm. Caput antice levi-nitidum, supra subtilissime trans- 

 verso-striolatum sive opacum, post ocellos evidenter transverso-striatuni ; capitis 

 pars occipitalis mediocriter longa et obconica, margine postico simplici. Gense 

 vix longitudine flagelli articuli primi. Flagelli articulus secundus quam primus 

 evidenter duplo longior, tertius articulus quam primus triplo longior. 



"Collum brevissimum. Me.souotum subteuuiter et evidenter transverso-strio- 

 latum, post suturam crenulatam in medio medioci'iter tenuiter transverso-rugo- 

 sum et in rus;is iiiconspiciie punctatura. Segraentum medianum evidenter re- 

 ticulato-rugosum. Coxae posteriores supra subtiliter ti'ansverso-striolata'. Te- 

 rebra quam corpus totnm pauUulo longior, vaginis nigris, apice albis. Nigrum, 

 pedibus fuscis, tibiis ad basin tarsisque exceptis posterioribus albatis." 



Hab. — Saskatchewan River. 



Type. — In the collection of H. de Saussure. 



FfleuiiM arcus Couper. 

 1870. Feonus area Couper, Canad. Ent., vol. ii, p. 110. 



"Head black, glossy, impunctured ; eyes black, round; antennte black, two- 

 eigbtbs of an inch long; thorax not so black as head; the sides beneath and 

 between dark chestnut, interspersed with short fulvous hairs; wings fuliginous; 

 nervures and stigma black; legs black, hairy; base of the femora fulvous: 

 abdomen bright red, with scattered fulvous hairs; ovipositor black, as long as 

 the antennae. Length 3-8ths inch." 



Mr. Couper mention.^ finding- this in a cocoon under the hark of 

 a tree. 



"On the 8th of January last, while searching for hybernating Coleoptera in 

 the woods near Ottawa, I had occasion to strip the bark of a decayed ash tree, 

 under which, among other insect store, 1 found a small transparent and curiously 

 formed cocoon containing a laiva of a fly which was at that time unknown to 

 me. The cocoon was imbedded in the bark occupying what I am now led to 

 believe tlie excavation made by a grub of Cerambyx or some otlier coleopterous 

 bark borer ••■ •■■'. The siiape of the cocoon is oblong surrounded by a band 



and covered by a thin pellucid lid, and the form resembles a small coflin. The 



TEANS. AM. ENT. SOC. XXXIV. APEIL, 1908. 



