URBICOLA COMMA. 183 



described, but are larger (about l-Gmm. long, 0-04mm. wide) and dark 

 brown in colour. The intersegmental subsegment is very marked on 

 the 7th and 8th abdominal segments. Hairs are numerous. The 

 sculpture is almost entirely pitting. Small lenticles (like spiracles, 

 but half the length of the actual ones) exist on the 5th, 6th and 7th 

 abdominals, close to posterior margin of segment, at about horizon of 

 iii. The ventral aspect shows the dehiscence separating antenna? from 

 wings and legs for about two-thirds of their length ; the appendages 

 are all finely wrinkled transversely ; the free portion of proboscis 

 deeply ringed so as to look like a rat -tailed file or a screw with fine 

 thread ; the ridges do not anastomose, but are complete circles, or 

 would be if each half were not in contact with the other ; in front of 

 the 4th abdominal segment the wing-margin does not reach beyond 

 the middle of the 2nd subsegment, but the extreme apex of the wing is 

 produced, not as a gradual spreading of the hind-margin but, as a sepa- 

 rate rounded lappet, right into the 3rd subsegment (the intersegmental 

 one) ; from beneath these, about l'2mm. of the 3rd tarsi appear, the 

 proboscis reaching nearly 2mm. more. The lappet seems to be formed 

 by its angle with the hind-margin being held back by the leg scar, a 

 small elevation with several small circles (lenticles) ; a similar scar, 

 with six lenticles, is on the 5th abdominal segment ; on the 6th, it is 

 not so fully developed on one side, but even more pronounced on the 

 other. No other lenticles occur ventrally. The sculpture is chiefly 

 in pits. No demarcation is visible between the 8th, 9th and 10th 

 abdominal segments. On the middle line, immediately behind the 7th 

 abdominal, is a longitudinal impressed line, rather faintly marked, 

 0-15mm. long, then, after an interval (about 0-1 5mm.), a longer, well- 

 marked, depressed line, darkly coloured (about 0'4mm.) ; then, after 

 about 04mm., the surface bends dorsally, and has a deep, well-marked 

 anal scar, then (from the dorsal half of the segment) arises the 

 cremastral spine, of much the same fluted and ridged aspect on this 

 side as dorsally. Recurring to the wings, they have round their hind- 

 margins, a wide strip (0*6mm.), marked off by "Poulton's line," which 

 passes some distance up the costa (2mm.), and along the inner margin is 

 still evident till opposite the 2nd abdominal. A point that is noteworthy 

 is that the anal angle of the wing is on the abdominal incision 2-3, and 

 so the slip of hindwing, passing, before disappearing beneath forewing, 

 to beyond middle of 3rd, curls round the anal angle of forewing. This 

 is the usual position of anal angle in Ehopalocerous pupa?. In obtect 

 Heterocera it is usually opposite abdominal incision 3-4. The veins are 

 distinct as paler (raised ?) lines, but veins beyond vii or viii are lost in 

 the costa [Described from pupa-case, the larva of which was picked up at 

 Albarracin, and from which the butterfly (a 2 ) emerged some time 

 afterwards.] (Chapman). The slender pupa is about 17mm. long ; the 

 wings show a blue bloom, whilst the other parts of the body, the head 

 in particular, are covered with a mildewy-looking exudation. The J 

 pupa exhibits, in the middle of the wing, a marked longitudinal 

 elevation, in which is formed the black androconial streak of the fore- 

 wing (Staudinger). About 19mm. long. The head rounded; the 

 thorax slightly swollen ; the abdomen cylindrical and tapering, 

 terminating in a long anal point furnished at the extremity with an 

 ample bunch of cremastral hooks. The head, thorax and abdomen 

 are clothed in short, stiff spines, below the spiracles they occur in dense 



