334 BRUES. 



The peculiar conformation of the antennae which are very distinctly 

 thickened near the apex raises some doubt whether the species may 

 not be really worthy of generic rank, as I do not know of the occurrence 

 of similar antennae in any recent species of either genus, but as there 

 appear to be no other differential characters, I have not thought such a 

 procedure advisable. 



I have dedicated this species to Brischke in recognition of his work 

 on Amber Hymenoptera as it is quite possibly the one referred to by 

 him ('88) as Mcsochorvs. 



Family BETHYLIDjE. 



Palseobethylus Gen. now 



A characteristic bethylid type, showing however many resemblances 

 to living members of the Ampulieidae, particularly to Rhinopsis. 

 Body much elongated, especially the prothorax and head, the former 

 strongly flattened. Head large, flat; the occipital foramen placed 

 very near the vertex. Eyes elongate, bare; ocelli in a triangle. 

 Mandibles long, acute when seen from below, with rounded, edentate 

 margins. Maxillary palpi with four nearly equal joints; labial palpi 

 two-jointed, the basal joint more than twice as long as the apical one. 

 Antennae slightly thickened, 13-jointed; scape long. Prothorax very 

 long, much depressed and narrowed anteriorly, with a sharp, median, 

 grooved line; mesonotum shorter, with two pairs of furrows; scutel- 

 lum without foveae at the base; propodeum and all the pleurae long. 

 Abdomen of the usual form, obtusely pointed at the apex. Wings 

 with a complete marginal cell, though the apical half of the radial 

 vein is weakly marked; stigma lanceolate; submedian cell longer 

 than the median; second discoidal cell closed, the first discoidal and 

 also the first cubital cell indicated by streaks as in the genus Pristo- 

 cera. Hind wing lobed at the base. 



Type species, P. longicollis sp. no v. 



Palseobethylus longicollis sp. nov. 



cf. Length 5 mm. Apparently aeneous throughout; wings with 

 a distinct brownish cast. Head, viewed from the front, as wide as 

 high, the malar space one-third as long as the eye-height. Antennae 

 inserted very close to the oral margin; 13-jointed; scape broad and 



