Mr. F. Walker on the Mymaridse. 51 



(of the Mymaridce) ; by the palpi, wings, shorter legs, podeoii of the 

 abdomen which is inserted higher than the hind coxae, the meta- 

 thorax correspondingly shorter and not so sloping. On the whole, 

 I lay most stress on the palpi and wings as separating it from My- 

 maridce; the other distinctions (except of the head) being rather 

 generic or specific." Thysanus, the other genus, seems to connect 

 Trichogramma, &c. with the Mymaridce. 



Lym^inon. 



1. acuminatus (Walker MSS.)- Niger: antennis basi et pedibus 

 piceo-pallidis : fern, abdomine elongato conico, terebra exerta. 



2. jlavocinctus. 



3. pictus. Sulphureus : antennarum flagello capitis thoracisque 

 signaturis anoque nigricantibus. 



4. litoralis. Piceus : antennis basi, abdomine antice pedibusque 

 sulphureis, his proparte infuscatis. 



5. fuscicornis. Nigro-piceus, antennis pedibusque piceis. 



L. litoralis is very abundant in England and Ireland. It is darker 

 than L. Jlavocinctus and paler than L. fuscicornis, but perhaps all 

 three are varieties of one species. 



Arescon. 

 1. dimidiatus. Piceus ano concolore, antennis basi abdomine pe- 

 dibusque luteis : fere -*- lin. 



Taken many years ago near Belfast ; it has not since occurred. 



Litus. 



1 . cynipseus. Niger capite thoraceque granulatis abdomine lrevis- 

 simo alis infumatis pedibus ferruginosis : J lin. 



Var. Capite thoraceque piceis. 



This species is common near London, and I have often found it 

 on the windows of a greenhouse. 



Alaptus. 



1 . minimus. Ferruginosus antennis et pedibus pallidis. 



2. fusculus. Praecedente major colore obscurior antennis longio- 

 ribus ? vix revera species distincta. 



These two seem to be only varieties of one species which is com- 

 mon on windows near London. 



Anagrus. 

 Mr. Haliday has described three species (atomus, incarnatus, and 

 ustulatus) of this genus, in which he has noticed three other species 

 (atricajrillus, concinnus, and albiscapus), but I am unable to define 

 them by good specific characters. Some of the species are very 

 abundant. 



Anaphes. 



1. fuscipennis . Niger alis fuscis antennarum basi pedibusque 

 piceo-pallidis, fern, antennarum articulis 4° et5° subaequalibus : 1 lin. 

 Common near London and in Ireland. 



E2 



