86 HYMENOPTEKA. 



mark on the side of the basal area of the median segment, are yellow. Median segment 

 aciculated, very finely and coarsely punctured ; the basal area raised, a little longer than 

 broad, rounded at the apex ; the apex of the segment with a gradual slope, the centre 

 depressed at the base. Abdomen shining, impunctate, the apical segments covered with 

 short whitish hair. Pygidial area coarsely aciculated, depressed before the apex, 

 which is about one fourth of the width of the base ; the sides straight. Petiole not 

 curved on the lower side, dilated at the apex, a little longer than the second segment ; 

 the basal half of the petiole, a somewhat oval spot on the sides of the second segment, 

 a longer pair on the third, and a stripe on the apex of the penultimate segment, yellow. 

 The anterior knees, tibiae, and tarsi in front, and all the spurs, are yellow. The first 

 transverse cubital nervure is bent backwards in the middle, thus forming an angle 

 there, the second straight and oblique, the third bent above the middle. The third 

 antennal joint is hardly one quarter longer than the fourth. 



PHILANTHOCEPHALUS, gen. nov. 



Eyes emarginated at the top on the inner side, reaching to the base of the mandibles. Wings with four 

 cubital nervures, the second and third receiving each a recurrent nervure ; radial cellule elongate, acute 

 at the apex; second and third cubital cellules broad at the top, especially the second; anal nervure in 

 the hind wings interstitial, or received a little beyond the cubital. Stigma elongated, narrow. Abdomen 

 petiolate, the petiole at least two thirds the length of the other segments united ; furrowed laterally, 

 dilated at the apex. Spurs on the hind tibise not flattened, the inner one not dilated. Middle tibiae 

 with two spurs. Head usually broader than the thorax ; occiput margined. Pygidial area flat, not 

 differing from the penultimate segment, the sides not margined, the apex rounded. 



The affinities of Philanthocephalus are, it seems to me, with Mellinus, although it 

 differs widely from that genus in many respects. The head is differently shaped, 

 having quite a Philantkus-look, not only from the general form of the head itself, but 

 from the incised eyes ; in the alar neuration, again, it varies from Mellinus in the first 

 recurrent nervure being received in the second (not in the first) cubital cellule. From 

 the Mimesidse it may be known by the incised eyes and by the two spurs to the middle 

 tibiae ; in its general form, however, Philanihocephalus more nearly resembles Mellinus 

 than Mimesa. 



The maxillary palpi are six-, the labial palpi four-jointed, and the form of the trophi 

 does not differ materially from that of Gorytes or Mellinus. In the male genital 

 armature there is no essential divergence from these two genera. 



Synopsis of the Species. 



1 (6). Head and median segment punctured. 



2 (3) . Head rugosely punctured, entirely black j the thorax and apex of the 



median segment, the abdomen only on the second segment, marked 



with yellow hirticeps. 



