240 JAMES WATERSTON. 



their own length ; scapal grooves deep (the space between raised, not prominent in 

 profile, but carinate between the toruli), not meeting in a sharp angle, but separated 

 superiorly by a small flat area. Below the toruli, the scrobe continues as a hollow 

 above the mouth-edge, extending laterally to the genal keel. On the vertex and 

 frons, between the orbits and scapal grooves, the entire surface is covered with large 

 thimble-like setigerous punctures ; on the elevation between the grooves there are 

 about twenty smaller, more widely placed punctures ; similar sparser and smaller 

 punctures are seen above the clypeus and sides of the mouth-opening. Above the 

 mouth, the surface for a short distance is nearly smooth between the punctures, but 

 on the vertex the unpunctured surface is strongly and finely raised reticulate ; the 

 genae behind the malar keel are punctured similarly to the lower lateral angle of the 

 frons in front. 



Antennae slender, the club not greatly expanded, and only a little over one-third 

 of the funicle ; length, 1*4 mm. of which the scape is '47 mm. ; bulla elongate, 

 two-ninths of the scape ; the latter nearly six times as long as broad, narrow basally, 

 and expanded on the apical two-thirds ; pedicel (13 : 6) one-third of the scape, but 

 barely as wide ; as long as the first funicular. First four joints of funicle cylindrical ; 

 the fifth quadrate ; the sixth transverse ; in the ratio 18 : 14 : 14 : 12 : 11 : 10 ; 

 the breadth increasing from 6 on the first joint to 11 on the sixth ; club (in the same 

 scale) 10 : 7 : 12, with a breadth of 16. Except on the last two segments of the club 

 the bristles are stout ; sensoria — first funicular, 1 ; second, 3 ; third, 4 ; fourth, 5 ; 

 fifth, 8 ; sixth, 10 ; club, 14, 19, 8. 



Mouth-parts : mandibles (17 : 10) elongate, with one small ventral tooth, above 

 which is a broad concave lobe (?two nearly fused teeth), the upper internal one much 

 shorter ; the upper basal angle broadly bare ; 30-40 bristles on the rest of the outer 

 surface. Stipes coarsely reticulate ; one long bristle behind the palpus, and another 

 about the middle ; maxillary palpus, 5:4:4:8; mentum rough ; pattern a 

 little finer than on the stipes ; bristles 3:3. The galea is covered with bristles, 

 8-9 standing at the edge, on which, at the upper basal angle, there are also 4-5 short 

 clear spines. 



Thorax stout and broad ; pro- and meso-notum coriaceous, i.e. the pattern fine, 

 transversely drawn out, with numerous close, very short striae, and densely set with 

 setigerous punctures much smaller than those on the head ; scutellum (two-thirds as 

 long as the pro- and meso-nota) longitudinally striate ; the pattern more highly 

 raised. Propodeon very smooth centrally, swollen, round and rougher below the 

 larger, broadly oval spiracle. 



Wings two and four-fifths as long as broad; length, 2*1 mm. ; breadth, '75 mm. ; 

 submarginal five times the radius ; the marginal punctif orm and not reaching the costa ; 

 the post-marginal not half the radius. Submarginal with 15 bristles ; 4 bristles on the 

 costa, at base of radius and on postmarginal ; 7 bristles at the root of the radius, 

 and 8-9 on it or at the sides. At the apex of the submarginal cell is a row of 10 short 

 dark bristles, and 6-7 longer nearly hyaline ones rise from the membrane underneath ; 

 besides these there are numerous minute hyaline bristles, many submarginal in 

 position, in from two to four rows. The majority of these bristles rise from below, 

 but at the base are two short rows from the upper surface. The general distribution 

 of the bristles is shown in fig. 3 a, c ; the two clear areas — the basal triangle and the 



