U. LEPTOGASTER 753 



stripe-like dark markings on the hind femora, by the black tips to all and 

 especially the hind tibiae, and by the entire dark dorsal stripe on the 

 abdomen being unintorrnpted by paler l)ands. A rather small male 

 (Wicken, June 21, 1906) has the face gilded or rather dark orange but 

 greyish silvery white below the face-beard ; face-beard composed of about 

 twenty white hairs ; frons brown ; postocular bristles yellowish to their 

 very tips, very obvious and long though rather wide apart, and the bristles 

 lower down the back of the head about as long but thinner and whiter. 



Z.cylindrica is not nncommon in Britain, but owing to its being usually 

 confounded with L. guttiventris the only records I can give with certainty 

 are from Devon, Somerset, Dorset, and thence to Kent, and up to Cam- 

 bridgeshire (Wicken), Norfolk, Bucks (Stokonchurch), and Notts (South 

 Leverton), but it occurs in numerous localities over all that area, while 

 I have also seen it from G-lamorgan (Porthcawl); I have notes of its 

 occurrence in Worcestershire (Wyre Forest), Leicestershire (Blaby), 

 Herefordshire (West Hide), and Cheshire (Delamere Forest), but I cannot 

 be certain whether those specimens belong to this or the next species. 

 I am also in doubt as to its period of occurrence, but can speak of it 

 with certainty from June 5 to August 10, while I have a doubtful record 

 of August 24. It may often be found on long grass near woods. It is 

 recorded from Western and Northern Europe and extends to Eastern 



2. L, guttiventris Zetterstedt. Abdomen with inconspicuous pale 

 bands. Hind femora with an incomplete dark subapical band; hind 

 tibiae with a vague dark ring before tlie tip. Upper branch of the fork 

 of the postical vein almost always connected with the discal cell by the 

 small cross-vein. (Fig. 401.) 



Very closely resembling the previous species but even more 

 lanky. 



(J . Very much like L. cylindrica. Face narrower and whiter, and the sides of 

 the moutli whiter ; iface-beard very small, composed of about eight white 

 hairs ; frons darker ashy grey, hardly orange ; postocular bristles less evident 

 and more hair-like, but the two or three top ones rather stout and inclined 

 to be black. Antennae with the style microscopically pubescent. 



Thorax of a more brownish yellow tint, with the dark stripes more distinct 

 and the middle one more obviously split on the front part; humeri and 

 postalar calli rather ferruginous ; hind part of the disc bearing minute dark 

 bristles which are by no means confined to the dorso-central rows. 



Abdomen longer and thinner, with an obscure pale band before the hind- 

 margin of each segment, and these bands becoming rather ferruginous on 

 the second, third, and fourth segments ; the actual sidemargins rather 

 ferruginous near the hind corners of the segments, though more noticeably 

 so on the basal segments than on the others ; the darkened dorsal stripe 

 indistinct and interrupted by the paler bands, and becoming vagiic and widened 

 out just before each band. Genitalia smaller, the lateral lamellae having a 

 small almost quadrate shining orange basal segment, followed by a longer 

 simple falcate second segment which is dark orange at its base but soon 

 becomes black and bears under its basal half a long pale fringe ; hooks inter- 

 crossing ; beneath are two lateral basal subquadrate shining pale chestnut 

 lamellae and a triangular intermediate one ; the upright small lamellae near 

 the base on the upper side are oblong, shining brown, and bear pale 

 pubescence. 



3 B 



