298 Mr. Westwoop on Diopsis, 
centi-pallide, seta nigra. Thorax supra niger nitidulus, subtus investi- 
mento subfugaci cinereo opaco obductus, collari angusto concolori. 
Scutellum thoraci concolor, in apice spinis duabus flavis, validis, scutello 
plus duplo longioribus, divergentibus, armatum. Spine dus minores 
flavee, metathoraci, inter alas et halteres, insertae. 4bdomen thorace cum 
capite paullo longius, clavatum, (subtus tamen concavum,) rufo-ferrugi- 
neum, 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. Ale abdomine longiores, hyalinze, disco nonnihil infuscate, 
et ipso apice macula orbiculari fusca notate. Halteres albi.” Alarum 
nervi fusci. Tarsi saltem pedum posticorum albidi, nitidi. 
Dalman, whose description I have copied above, observes, * A Diopsi Ich- 
neumonea, Linn., differt hoec species preesertim abdomine unicolore et macula 
fusca alarum in summo apice, non ante illum sita;" to which Wiedemann 
adds, * Wenn die Zeichnung in der Linneischen Dissertation als vollig 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 
Schónherr, 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 * 9 ," describing their ocular peduncles as “so lang find als kopf und ruck- 
enschild zusammengenommen”, and the abdomen as “ keulformig.” 
Species? 6. Diopsis TENUIPES, mihi. 
Tas. IX. Fig. 5. 
Insectum alterum possideo, precedenti coloribus valdé affine, quod (e longi- 
tudine pedunculorum) marem ejus haberi potest. Ab illo preecipué differt 
longitudine pedunculorum oculiferorum, qui cum capite et thorace e tertiá 
parte sunt longiores, et in medio vix obscuriores; facies subtüs attenuata, 
dente utrinque longo divergenti. Thorax totus niger, nitidus. Spine scu- 
