30 James Waterston, 



of tlie median liiie of the head. There is the nsual pair of short 

 liairs before the occiput. 



Antennae. Ist Joint short, hardly so long as the trabecula 

 which is basally swollen and tapered distally. 2nd Joint slightly 

 longer than Ist, 3rd shorter than 2nd, 4th very short, 5th about 

 equal to 3rd. The ocular band is very short. The eye is small 

 giving rise to a long curved hair. The temples are evenly 

 rounded and bear two long pustulated hairs and three extremely 

 short bristles before the occiput. Occiput bare with broad band 

 marginally, convex in outline though slightly overhung by the 

 temples. The occipital bands, ill defined anteriorly, appear to 

 converge on the base of the raandibles. 



The margin of the head generally is incrassated, being thinnest 

 at the temporal angle. 



Thorax. 



Prothorax set deeply in the head, bare save for the usual 

 long hair at the posterior angle. Hidden below the occipital margin 

 however are 6 (3, 3) very short prickles or spines. 



Metathorax bare, strongly pointed over the abdomen. sides 

 divergent. At the postero-lateral angle a very short spine and 

 6 longish pustulated hairs of unequal thickness on each posterior 

 edge. The apex is bare, chitinous ribs appear between the coxae. 

 The mesosternum bears 2 hairs and the metasternum 4. 



Abdomen. 



Shape, elongated, Ist segment with subparallel or slightly 

 divergent sides. Its posterior edge is not quite transverse but might 

 be almost described as angled over the second. 4th segment broadest. 

 The 9th sternite is well developed. The lateral bands are narrow 

 and pointed anteriorly. They enter the segment in front for some 

 distance. 



Chaetotaxy. Ist segment with 6 hairs rising from small 

 pustules end arranged a) 2 apart — one on each side of metathoracic 

 apex, b) 2 approximated in the middle of the segment and c) 2 widely 

 apart near posterior edge. Segments 2—6 bear on each side one 

 long hair on large pustule below the Stigma. These segments also 

 bear a curved median row of hairs as follows. 2nd has 8 ; 3rd has 

 7—8; 4th has 6—7; 5th has 5—7; 6th has 4. The 7th segment 



