CYCL0P1DES PAL.EMON. 207 



maxillae, in front of this is the hollow below nose-horn, whilst behind, 

 the line curves to the base of cremastral spine, which is hollow 

 ventrally (pen-shaped). The antero-posterior diameters would be : 

 the head (l'3mm. from front), l*5mm. ; at summit of mesothorax 

 and wing-spines (4mm. from front), 2-8mm. tapering to 2-2mm. at 

 posterior margin of 6th abdominal segment (12mm. from front). The 

 texture is semi-transparent with darker markings, the colour during 

 life would, therefore, be very pale ochreous. The markings are a black 

 dorsal line from prothorax to end of cremastral spine ; this just 

 reaches to the head ; a subdorsal black line faint on head, at back of 

 eyes, on mesothorax down patagia, and apparently in line with broad 

 black line down inner margin of forewings. Ventrally, the base of 

 maxilla and of 1st legs have a good deal of black, the posterior three- 

 fourths of the maxillae making a notable black line down the venter. 

 The wing-veins are clearly marked out by lines that are something 

 short of black. They are the 1st and 2nd anal veins, the cubital con- 

 tinuing straight into vein 4 (median 3), the median (fainter than the 

 cubital) meeting the transverse veins between 5 and 6 (median 1 and 2); 

 the radial is only seen just where it joins the transverse, and gives off 

 veins 7, 8, and 9 ; the rest of the radial, as well as the subcostal and veins 

 10 and 11, is wanting. These veins reach to "Poulton's line," beyond 

 which is a spread-out colourless margin, almost l-0mm. wide at apex, 

 barely 0*2mm. at anal angle ; the wing-apex is just within posterior 

 margin of the 4th abdominal segment. The maxillae are free only as to 

 their extreme tips, which reach over on to the 5th abdominal, supported 

 by tips of 3rd legs, which reach halfway from end of wings to end of 

 maxillae. The hindwings are a narrow colourless strip, wide opposite 

 the 1st abdominal, notched from the spiracle of the 2nd abdominal, and 

 disappearing under 1st wing just after reaching the 3rd abdo- 

 minal. The spiracle of the 2nd abdominal segment is barely free, 

 whilst that of the 3rd abdominal is covered by wing (this may be 

 normal for the species or only an accident in this specimen). The 

 glazed eyes face forwards, and, on dehiscence, each separates in one 

 piece, with the included area behind. The labrum is narrow and long, 

 and the lappets on either side (mandibles ?) are well-marked ; there is 

 a narrow scrap (labium) between the bases of the maxillae. The 

 maxillae reach well forward, so that the labrum is rather anterior than 

 ventral. The antennae reach down to about the middle of the 3rd 

 abdominal segment (about as far as hindwings), the 3rd legs a little 

 beyond (nearly to hind margin of the 3rd abdominal) ; the 1st legs are 

 considerably shorter; the 2nd legs abut widely against eyes. On 

 dehiscence, the headpieces separate from antennae, etc. The dorsal 

 headpiece is about -6mm. across (on either side), 0-14mm. wide at 

 dorsal, and 0*2mm. at outer, end ; it remains attached to pro- 

 thorax, and, with the 1st and 2nd segments of the thorax, splits 

 dorsally on dehiscence. The metathorax does not split, but 

 separates from the mesothorax, and the 1st and 2nd wings 

 separate for some distance. There is a wide hiatus between the 

 metathorax and the 1st abdominal segment, which was obviously 

 present during life, the bottom of the gap being transparent membrane ; 

 this looks as if it were an accident in this specimen, though the 

 membrane below shows that it is probably, if so, not a rare one. A 

 depressed line on the wings shows that the girth passed across middle 



