26 G. C. DAVIS. 



Described from one specimen from Wa.shington. Type in the 

 Cresson collection. 



SyrpliocloiiiiM {(illettii n. sj). 



^. — Li3ii;;tli 4.") luni. Black, shiuiiiK, with short yellowish pubescence; broad 

 orbital lines in front, mouth, tcfiulge, spot in front and line beneath each winjj, 

 yellowisli white. Le^s honey-yellow ; ocelli prominent; antennai black, reddish 

 brown beneath. WiiiKs liyaline, sti}<nia and veins brown. Head and mesotliorax 

 veiy broad ; metathorax, all of first and second abdominal segments and basal 

 half of the third and fourth, coarsely and deei)ly jjunctured ; seginents of abdo- 

 men about e(iual widtii throufihout. 



I)e.scril)e<l from one fenuile sent l)y Prof. (,'. P. (lillette, of Colo- 

 rado, to whom I take plcasiiR! in (U-dicatiiiii' tliis sj)ecies. 



fSyrplKX'ioiiiiM iiiollipcM I'rov. (IlHuum), Add. Faune Hymen. 429. 



J.— Lcngtli :j.7 una. 151ack, with legs jiale yellow; n)etiithorax bicarinate : 

 first segment of abdomen aciculated and second ])uu(turi(l. 



Canada. Type not seen, l)nt probably does not belong here. 



SyrplioctoiiiiM iiiaciililroiiN Cr. {Bassus), Proc. Ent. Soc. Phila. iv, 272, 9 • 



Bassm seinifamMiim Walsh, Trans. St. Louis Acad, iii, 87, % . 



9. — Length r>~7Sy mm. Black, with a S])ot beneath antennie, triangular spot 

 on each side near eyes, mouth, teguhe si)ot in front, line beneath, cuueifonn line 

 on mesonotum, scutcllum, ])ost-scutellum, and interrupted margins on alHloniiual 

 segments, yellowish white. Legs rufous, except posterior tarsi, which are nearly 

 black. 



% . — Has face, scape beneath, cheeks bencalli, lour anterior coxtB and trochan- 

 ters, crescent on mesosternum and longitudiual dash on j)leur{e, yellowisli white; 

 other markings as in 9 . 



Fourteen spcM'imens from California, Nevada, Colorado, Montana 

 and Illinois. 



iSyrplioctonuH paeifieiiM Cr. il'iixsns), Proc. Acad. Nat. Sci. 187H, 37(j, 9- 

 Banmx xanthoimn Ashm., Proc. L'. S. Nat. Mus. xii, 440, %. 



9. — Length .5-() mm. Black, with tlie central part of al)domen rufous; ohloiig 

 si)ot on front, mouth, tegulse, s])ot in front, line ])eneath, large cuneiform si)ot on 

 margins of mesonotum, strijie between nu-so- and nietai)leurie ; trochanters and 

 more or less of coxic, yellowish white; nu)st of postxu-ior coxte and base of the 

 others, black ; remaiiuler of legs rufous. Abdonusn, with tip of segment 2, all of 

 segment .'>. and iiioic or less of segment 4, rufous; segmc^nts 1 and 2 roughly 

 sculptured. 



-jj .—Ditfiu's ill having the (entire fa(;c, scajx^ beneath, prostcrnum. anterior mar- 

 gin of mesosternum couliuuiug onto pleura;, longitudinal stripe 011 lower meso- 

 pleuraj, more or less of four anterior legs and a more or less di-stinct yellow band 

 or two dots at base of third abdominal segment, yellowish white; fourth and 

 fifth segmenls ol' I lie ahilonieii usually black, margined with rufous. 



Two female and seven male s])ecimens from California, Nevada, 



Wa.shington and Vancouver's Island. 



