Hymenopterous genus Scleroderma. 128 
pallide fuscescentibus, vena mediana parva, apice antice 
curvata et cum subcostali conjuncta, postice absque ramo 
ordinario deflexo. 
?. Elongata gracilis, glaberrima, capite thorace 
latiore, piceo, subquadrato, angulis rotundatis, thorace 
lutescenti, postice obscuriori; abdomine nigro; antennis 
piceis, articulis basalibus fulvis ; pedibus piceis, tarsis 
pallidioribus. Long. corp. maris fere3 mm. Exp. alar. 
ant. fere5 mm. Long. corp. feemine, circiter 3 mm. 
Hab. In insula Ste. Helene (D. 7’. Vernon Wollaston). 
Mas et fem. in Mus. Hopeiano Oxonie (olim nostr.). 
Scleroderma vigilans, n.s. (Plate V., figs. 3, 4). 
@. Picea glabra, antennis tarsisque luteo-albidis ; 
collare trigono rufo-piceo ; alis pallide fuscescenti tinctis ; 
capite subquadrato ; abdomine elongato, apice attenuato ; 
alarum anticarum vena subcostali brevi cum stigmate 
ovali subdiscoidali fere connexa, vena mediana apice 
deflexo, ramum in discum ale extensum formante. Long. 
corp.22mm. Exp. alar ant. 4 mm. 
Obs. 1. Individua duo foeminea ocellis distinctis 
instructa. (Plate V., fig. 4). 
Obs. 2. Individuum unum fcomineum alis perfectis 
ocellisque instructum. (Plate V., fig. 3). 
Hab. In insula Taprobane (D. Thwaites). In Mus. 
Hopeiano Oxonie (olin nostr.). 
Scleroderma Thwaitesiana, n. 8. 
?. 8S. vigilanti foemine normalis (PI. V., fig. 4) forma 
congruit at multo minor, gracilis, nitida; obscure lutescens 
capite magis castaneo; abdomine thorace latiori seg- 
mentis in medio obscurius transverse fasciatis, nigri- 
tudine in segmento apicali magis distincta; antennis 
pedibusque corpore concoloribus, femoribus latis. Long. 
corp. circiter 38 mm. 
Hab. In insula Taprobane (D. Thwaites). In Mus. 
Hopeiano Oxonie (olim nostr.) 
Scleroderma soror,n.s. (Plate V., fig. 5.) 
@. Parva, tota pallide lutea, antennis capite vix 
longioribus fulvis, articulis apicalibus sensim incrassatis, 
nigricantibus ; capite oblongo, oculis nigris; thorace 
