vnth remarks on some ahei'vant rjencra of the ScoliidiV. 71 



the vertex, the sides of the head and the anterior margin of the 

 clypeus pale lutaceous yellow ; the mandibles, antenna}, the carina3 

 on the second abdominal segment, the pygidium, the tibiae obscurely 

 and the tarsi dull ferruginous brown ; the apical margins of the 

 abdominal segments above and beneath testaceous. 

 Length 8 mm. ^ tmknown. 



Hah. Mendoza, Argentina. (Purchased from H. Bolle.) 

 Distinguished from all other species known at present 

 by the form of the first abdominal segment, 



Scotoma twbvlenta, n. sp. 



^. Mandibles not elbowed, bidentate, the outer tooth rather long 

 and broad, the inner tooth very short and blunt. Clypeus deeply 

 and rather broadly triangularly emarginate, the apical angles pro- 

 duced. Antenna} a little longer than the head, thorax and median 

 segment combined, the seven apical joints arcuate, inserted about as 

 far from each other as from the eyes. Head strongly punctured, no 

 broader than the mesonotum. Thorax rather sparsely punctured ; 

 the pronotum short with the anterior margin raised ; the scutellum 

 broadly rounded at the apex, with a depressed transverse row of 

 large punctures at the base. Median segment shining, very shallowly 

 punctured, a little longer than the mesonotum. Abdomen elongate 

 and slender, shining and sparsely punctured ; segments 2-5 con- 

 stricted at the base and very narrowly depressed on the apical 

 margin ; the basal segment very slender at the base with a minute 

 tubercle on each side near the middle and a deep median sulca from 

 the base reaching beyond the middle. Epipygium very deeply 

 punctured and narrowly rounded at the apex ; hypopygium narrow 

 and short, not projecting beyond the epipygium and truncate at the 

 apex. The claspers are rather long and pointed. 



Black ; the mandibles except at the apex, the clypeus, a spot above 

 the base of each antenna, the margins of the eyes as high as the 

 base of the antennaj, and a narrow line on the inner margin of the 

 eyes near the summit, a transverse line on each side on the posterior 

 margin of the head, the posterior margin of the pronotum, a spot on 

 each side of the prothorax, a small round spot on the mesonotum, a 

 curved line above^ the tegulas, a curved spot below the base of the 

 anterior wings and two smaller spots below it, a spot on the scutel- 

 lum and one on each side at its basal angles, the postscutellum, a 

 spot on the sides of the median segment at the base, two longitudinal 

 marks on the median segment sharply curving outwards towards the 

 apex, a narrow transverse band near the apex of the first abdominal 



