334 HALIDAY ON 



declivi, undique marginato, cordiformi, longitudinaliter canalicu- 

 lato : petiolus descendens cylindricus striatus, mari longior : 

 abdomen ovatum convexum, thorace fere brevibus et vix angus- 

 tius, ajjice obtusum ; aculeo brevi valido, parum compresso, 

 desuper exerto : segmenta 2 anteriora longitudine subaequalia, 

 primum basi fossulatum carinulis lateralibus antrorsum productis, 

 3""". maximum, reliqua brevissima linearia : coxae magnse com- 

 pressse : femora utrinque attenuata : tarsi tibiis breviores, articulis 

 intermediis minutissimis, metatarsis antico dilatato, posterioribus 

 elongatis : alae anticas nervo subcostali " dimidiato (sc. humerali a 

 margine parum remoto et ulnari longitudine subequalibus) cubito 

 brevissimo perparum dilatato, radio mox abruj)to vix illo longiore : 

 posticse nervo subcostali tenui ultra medium costag abrupto. 



This genus has a shght resemblance in habit to Megaspihis 

 as the following to Microps. 



Sp. 1. Sp. hirta. Capite thoraceque fere toils jmnctato 

 reticulatis confertim villosis. $ (Long. corp. .14; 

 alarum .2). 



Caput obscure aeneum antice magis attenuatum quam in sequente, 

 totum confertim crasse punctatum et villosum, plag^ intermedin 

 frontis tantum laevissima glabra : antennae nigras quam in ill4 

 longiores et minus incrassatoe, articulo 3''°. parum breviore quam 

 2''" : thorax obscure aeneus : collare, mesothoracis scutum et 

 humeri confertim punctati, scuti tantum margine antico levigato : 

 paraptera et scutellum vage punctata, hoc apice parciCis : meta- 

 thoracis latera rugoso-punctata, scutellum loevissimum marginibus 

 et canalicula media crenatis : squamulae fusco-ferrugineas : alae 

 dilute ferrugineae nervis fuscis : abdomen et pedes ut in sequente. 



Taken in England ; I forget the particular spot. 



Sp. 2. Sp. nigra. Capite punctulato (fronte la^vissimdj, 

 et thorace antice suturisque punctato, sparsim jJubescenti^ 

 bus. $ $ (Long. .1± ; alar. .15±.) 



Spalangia nigra. Latr., Spin., Dalm., 8fc. 



Caput et thorax nigra nitida viridi s. aeneo micantia : caput vage 

 punctulatum pubescens, fronte late depressa laevissima glabra : 



"^ As the variations of the subcostal nervure afford some useful divisional cha- 

 racters, I have employed the following terms to distinguish its parts : — 



1. The interior portion distinct from the rib I call Humeral. 



2. The costal portion before the fork .... Ulnar. 



3. The costal portion beyond it Radial. 



4. The descending branch of the fork .... Cubital. 



