PARASITIC HYMENOPTERA. 345 



fusca ; scutellum fuscum lateribus flavum : metathorax cvim 

 postpectore nigro-fuscus : femora medio, tarsi apice obscuriores. 

 Taken near London. 



Gen. II. — LiTus. Haliday. 



AntenncB feminae ^-articulatce capitulo exannulato. Tarsi 



pentameri. 



Characteres fusiores petendi sub singulis speciebus, 



Sp. 1. L. cynipseus. Niger capite thoraceque opacis, alis 

 fuscis longt ciliatis, pedibus ferrugineis $. (Long. .02; 

 alar. .08.) 



Caput et thorax granulato-opaca : frons lata truncata : vertex 

 planus: occiput excavatum : antennae /emmi^ radicula brevissima, 

 scapo longiusculo arcuato utrinque attenuato, pedicello lato com- 

 presso, articulis flagelli 6 minutis, 3''°. breviore, exterioribus sensim 

 incrassatis subglobosis, ultimo 3 prsecedentibus simul sumtis lon- 

 giore, ovato-acuminato : thorax brevis gibbus : collari brevissimo 

 arcuato ; metathorace truncate : abdomen breve sessile metathoraci 

 adpressum, tereti - compressum, ventre carinatum, aculei apice 

 subexerto, (forma fere ut in genere Cynipede): alae lineares 

 anticse paulo latiores undique longe ciliatae : pedes approximati 

 solito crassiores, tibiis anticis clavatis. 



Not uncommon on grass near trees. 



Sp. 2. L. dimidiatus. Piceus ano concolore, alis lutescenii- 

 hyalinis, antennis basi abdomine pedibusque luteis. ? . 

 (Long. .04 ; alar. .08.) 



Mymar dimidiatus. Curt. G.—E. B. 



Huic omnia fere ut in O'dctonis sectionis B. modo antennae 9-arti- 

 culatse et alae angustiores sunt: caput oblatum vertice fere lineari, 

 piceum ore lutescente : antennae luteae apice fuscescentes, articulis 

 flagelli oblongis extres latitudine crescentibus, ultimo oblongo 

 ovato vix duplo majore quam praecedente : thorax piceus scutello 

 rufescente : abdomen subsessile compressum, luteum apice fus- 

 cum : pedes graciles lutei : alae anticse fere lineares breviter ciliatae 

 posticae angustiores longius ciliatae. 



This and the preceding may be considered as the probable 

 types of distinct genera, which I have thought it premature 

 to separate without having examined a greater number of 

 species. 



NO. IV. VOL. I. Y Y 



