50 [March, 



31 (bO) Second joint of hind tarsi, viewed laterally, either subtriangular and 



nmch less than twice as long as wide, ©r the face is not extra- 

 ordinarily wide. 



32 (33) Antennae not extraordinarily long; they extend when the head is 



liiid back, behind the thorax, but not so far as the apical margin of 

 the basal abdominal segment. A smaller species. 



(Basal abdominal segment generally with a very feeble apical 

 impression, which, however, is nearly always visible right across the 

 segment in some aspects, and on this part the surface is excessively 

 tiuely, but evidently, sculptured.) 



.... pnuxillus var. imvuirginaUis Sch. 



33 (32) Antennae extraordinarily long, extending, when the head is laid back, 



to the apex of the basal abdominal segment or even further, three 

 or four of the apical joints lying beyond the brow of the propodeum. 

 Larger species. 



(First abdominal segment without an evident apical impression, 

 and, along the apical margin, smooth and polished, without evident 

 minute surface-sculpture.) 



34 (35) Face in front view widely ovato or roundish ; scutellum roughly or 



rugosely sculptured, the punctures generally effaced, the sculpture 

 therefore unlike that of the mesonotum ; fourtli abdominal segment 

 viewed from the side with the general clothing consisting of ex- 

 cessively minute hairs, onW just visibly rising above the surface ; 

 tarsal joints of all the legs longer, the second joint of the hind ones 

 (viewed laterally) longer than wide. 



(Tomentose spots at base of 2nd abdominal segment laterally 

 dense and distinct in good specimens.) 



.... fulvicornis K. 



35 (34) Face in front view long-ovate ; scutellum punctured much like the 



mesonotum ; fourth abdominal segment viewed laterally with con- 

 spicuous, erect, and not excessively short, hairs ; tarsi of all the legs 

 short, the second joint of the hind ones, viewed laterallv, about as 

 wide as long. 



(Tomentose spots at the sides of the 2nd abdominal segment 



indistinct or wanting.) freygessneri Alfk. 



3G (17) Second ventral segment of the abdomen well clothed with long, erect 

 hairs, as seen in lateral aspect, the following ones also often more 

 or less similarly clothed ; in laevis alone with very short hairs or 

 nearly glabrous, but this species has short antennae, which do not 

 reach nearly to the end of the thorax. 



37 (54) Antennae often short, or at most of moderate length, when the head 



is laid back they reach at most to about the end of the anterior area 

 of the propodeum ; the 5ih and 6th joints are at most a little elon- 

 gate, in some species not at all so. 



38 (41) Anterior area of propodeum rugose throughout and bounded pos- 



teriorly by a sharp, fine, raised margin. 



39 (40) Hind angles of the propodeum with a raised margin ; abdomen with 



only very short hairs on the ventral segments 

 .... laevis K. 



