PARASITIC IIYMENOPTERA. 339 



Subgen.— Omphale. Haliday. 



Antermoi 1-art'iculatce, flagello — maris elongato Ihieari, ver- 

 ticillato-jnloso, articidis cequallbus ; — feminae Jiliforml 

 articidis apicis longitudine decrescentibus ultimo minuto 

 ncuminato. Alee anticce ciihito brevissimo radio statim 

 abrttpto. Abdome7i siibsessile maris oblovginn ; — feminae 

 acuminatum rima ventrali in basin fere elongata, aculei 

 apice exerto. 



Vertex linearis, frons late impressa : antennse femince scapo lineari, 

 pedicello clavato, breviore quam articulo 3". reliqviis longitudine 

 decrescentibus discretis ultimo minuto acuminato •,-^maris scapo 

 dilatato, pedicello brevissimo, fiagello elongato lineari compresso, 

 articulis singulis apice attenuatis : tropbi fere quales subgeneri 

 Eulopho sc. mandibula lata trigqna apice tridens : mentum sub- 

 compressum, labium plicatum apice attenuatiim incisum : palpi 

 articulis subequalibus, 2^°. apice attenuate : maxilla lata com- 

 pressa, lobo attenuato-trigono intus membranaceo dorso firmiore 

 indistincte articulato : palpi labialibus conformes parum longiores :" 

 thorax ovatus : collare brevissimum : mesothoracis paraptera 

 remota minuta humeris arete annexa, scutellum rotundatum leniter 

 convexum, lineola transversa subtilissima vel obsoleta : meta- 

 tliorax brevis declivis : abdomen thorace angustius subsessile 

 segmenti primi puncto petiolari membranaceo incisum ; — maris 

 liueare obtusum thorace parum longius ; — femince dimidio- 

 triplo longius, lanceolatum dorso deplanatum, ventre carinatum, 

 usque sub segmentum dorsale 2"'". rima ventrali fissum : aculeus 

 longus apice et valvulis breviter exertis : alaj antics ulna elongata, 

 radio ultra basin cubiti brevissimi vix producto : posticse ulna 

 tenui duplicata : pedes graciles. 



From Eucercus (Walker), which it somewhat resembles, 

 it may be distinguished by the antennae, being but 7-jointed, 

 not clavate in the female, with the joints after the pedicel of 

 equal length in the male ; by the less convex scutel without 

 longitudinal lines, the shorter aculeus and the cubital nervure 

 shorter and nearer the tip of the wing. 



Sp. 1. O. salicis. Viridi-aurea alts candido-hyalinis, ati- 

 tennarum scapo basi Jlavo, pedibus luteo fuscoque variis 

 S $ •• abdomine medio atro purpurea S : aut fasciis alro 



' Sp, examined— 0.«a/?«'.'!. 



