178 BULLETIN 40, UNITED STATES NATIONAL MUSEUM. 



(le.sciibed fur the tiist time. A sinj^le 6 spocimeii (to<;i'tlicr with several 

 feiiuiles) was ican'd from spider <'.iij;s in an orange-colored coeoon by 

 Mr. J. H. Emerton, in 1871, and is now in the Department of Agricul- 

 ture. This single si)e('imen has enabled me to perfect the diagnosis 

 of the genus. It bears a close resemblance to the male in the genus 

 Acoloides, but differs in having subelavate antenna^, a little longer 

 marginal vein, longer stigmal vein, and a distinct basal nervure. 



The habits of the genus were unknown to the European authorities, 

 and we are indebted to an American, Mr. L. (). Howard, for tirst making 

 us acquainted with them in this country. All that have been reared 

 are from si)ider eggs. 



The species known to me may be tabulated as follows: 



TA15LK OF Sl'E<'IKS. 



I'xxly not fiitirely black 'J. 



lUxly c;iitii<'Iy black. 



Head and thorax faintly niuToscoi>ically imnctiilatc; abdonieu smooth, shininj^. 



Legs ami aiitemuc fuscous B. minutus, sp. uov. 



Legs, scape aud funiclo, brownish-yellow B. nioer, sj). nov. 



2. licadldack. 



Thorax and abdomen fuscous or pieeons ; legs and antenuie, brownish-yellow, the 



stajie and pedicel at base, fuscous B. PlCEUS, sp. nov. 



Thorax an<l abdomen brownish-yellow; legs and anteun.e yellow, the clul) 



black B. ci.AVATUS, Prov. 



Wludly dark honey-yellow B. AMKKICANUS, How. 



Baeiis ininutus, sii. nov. 



9 . Length, 0.5""". Black, shining, faintly microscopically punctu- 

 late, with a microscopic sericeous pubescence; antenna' and legs fus- 

 cous, or dark brown, the tarsi paler. Antenna' 7-jointed, very short, 

 the club large, ])ointed-ovate; pedicel large, pale at tip; first fuuiclar 

 joint scarcely longer than thick; the renmining joints of funicle very 

 minute, transverse. Abdomen broadly oval, convex, shining, impunc- 

 tate, wider than the head and as long as the head and thorax united. 



Habitat. — Ottawa, Canada. 



Types in Coll. Ashmead. 



Described from 2 9 specimens received from W. Hague Harrington. 

 Baeus nigei, sp. nov. 



9 . Length, (KT""". Black, shining, with a tine sericeous pubes- 

 cence: head impunctate; eyes very large, nearly round, occupying the 

 whole side of tlie head, i»ubescent; thorax not longer than the length 

 of the head, microscoj>ically i)unctate. Antenna' Aery sliort, the scaj)*' 

 and funicle pale ruf\)us or brownish-yellow, the chib large, black. Legs 

 brownish yellow, the tibiie with a slight dusky streak at the middle, 



