298 Mr. Westwood on Diopsis, 



centi-pallidae, seta nigra. Thorax supra niger nitidulus, subtus investi- 

 niento subfugaci cineieo opaco obductus, collari angiisto concolori. 

 Scutellum thoraci concolor, in apice spinis duabus flavis, validis, scutello 

 plus duplo longioribus, divergentibus, armatum. Spince duse minores 

 flavse, metathoraci, inter alas et halteres, insertae. Abdoynen thorace cum 

 ca|)ite paullo longius, clavatuni, (subtus tamen concavum,) rufo-ferrugi- 

 neuin, glabrum, nitidum, immaculatum, subtus pallidius, genitalibus fus- 

 cis. Pedes omnes abdomini concolores (doch ein wenig mehr in's gelbe, 

 Wied.), tibiarum tarsorumque apicibus saturatioribus ; femora antica reli- 

 quis multo crassiora (non vero clavata) ; posteriora linearia, summo apice 

 unispinosa. Alee abdomine longiores, hyalinse, disco nonnihil infuscatae, 

 et ipso apice macula orbiculari fusca notatae. Halteres albi." Alarum 

 nervi fusci. Tarsi saltern pedum posticorum albidi, nitidi. 

 Dalman, whose description I have copied above, observes, " A Diopsi Ich- 

 neumonea, Linn., differt hsec species prsesertini abdomine unicolore et macula 

 fusca alarum in summo apice, non ante ilium sita;" to which Wiedemann 

 adds, " Wenn die Zeichnung in der Linneischen Dissertation als voUig genau 

 anzunehmen ist, so verhalt's sich allerdings so:" but of the correctness of 

 Dalman's observation it appears to me there can be no doubt. The latter 

 appears to have been acquainted with a single specimen in the collection of 

 Schonherr, which, from the figure of the abdomen, appears to be a female ; but 

 Wiedemann, who also gave an original description containing several addi- 

 tional characters, which I have added above, possessed the species, and was 

 also acquainted with specimens in the Vienna collection, all of which he gives 

 as " ? ," describing their ocular peduncles as " so lang find als kopf und ruck- 

 enschild zusammengenommen", and the abdomen as " keulformig." 



Species? G. Diopsis tenuipes, mUii. 

 Tab. IX. Fig. 5. 

 Insectum alterum possideo, prsecedenti coloribus valde affine, quod (e longi- 

 tudine pedunculorum) marem ejus haberi potest. Ab illo prsecipufe diflfert 

 longitudine pedunculorum oculiferorum, qui cum capite et thorace e tertia 

 parte sunt longiores, et in medio vix obscuriores ; facies subtxis attenuata, 

 dente utrinque longo divergenti. Thorax totus niger, nitidus. Spince scu- 



