318 



BRITISH LEPIDOPTERA. 



pupa is some 2 '5mm. to the ventral side of the apparent axis ot 

 the pupa, the mesothoracic dorsum and the two wing-bases are rather 

 prominent, and there is a hollow where the 1st abdominal segment dips 

 under the hindwings, otherwise the form is fairly circular at all points, 

 but with just so much flattening under and beyond the trunk-horn, 

 that it looks as if a true cylinder would just enclose the horn instead 

 of exposing it. The measurements taken of a fair-sized 2 pupa are : 



MEASUREMENTS AT 



LENGTH FROM 

 ANTERIOR 

 EXTREMITY. 



ANTERO-POSTERIOR 

 DIAMETER. 



TRANSVERSE 

 DIAMETER. 



Posterior border prothorax, 1st 







(including 

 proboscis) 



(without 

 proboscis) 









3'3 mm - 

 8-o „ 



ii'Omm. 9*3mm. 



12*6 ,, II'O ,, 



8-on 

 12-3 



im. 



Wing-base, summit of mesothorax . . 



>i 



Posterior border metathorax 



12-c; 



»j 



1 1 -5mm. 



n-8 



»> 



Front of 2nd abdominal segment, 













end of antenna and 1st legs 



16-0 





12-6 „ 



12*2 



»» 



Front of 4th abdominal segment, end 













of 2nd legs 



21*0 



>> 



130 II 



126 





End of wings, posterior border of 







26-0 



31-0 





13-5 » 



12-4 ,, 



I3'3 



12-5 



15 

 » » 



Front of 7th abdominal 



34'5 



»> 



12-0 „ 



H'5 



»> 





37-5 



>> 



lO'O „ 



9-6 



11 



Front of 9th abdominal 



40-0 



> j 



8'5 » 



9-0 



M 



Front of 10th abdominal segment . . 



42*0 



)> 



4'° »i 



4-0 



»» 



Base of anal spine 



Extreme lengthrr: 



43"0 

 46*0 



J5 



'*5 ». 



2*0 



>> 



The horn from labrum to extremity is 8mm. — yomm. in a small 

 pupa • it is about 2mm. in diameter, a little less basally, where a 

 space exists between it and pupa, a little more at end where it touches 

 pupa. The pupa is thoroughly " Sphingid " in having the labrum 

 well in front, it is almost, but not quite, the most anterior portion 

 of the pupa. The convexity of the eye-lines is directed about 30 

 less than directly forwards, i.e., 6o° forwards of ventral. The labrum 

 is not always clearly marked out, when it is, it is of pentagonal form, 

 with a flat side to the maxillae and an angle dorsal, and it carries 

 a pair of tubercular elevations. The rest of the head is finely 

 wrinkled rather than tuberculated. The glazed eye is a well-marked 

 depressed curved line, with a narrow band outside it and a 

 broader within, smoother than the rest of the head but with 

 radial wrinkles, the outer passing into the general surface, but the 

 inner well marked off by a definite curved groove from a central 

 area of ordinary surface. The antennae show the segments very 

 plainly, about 65 can be easily counted ; each segment has a 

 central elevation and a lower one on either side, basally, where they 

 are largest, these are further elaborated and subdivided and along the 

 dorsal margin is a further row of chainlike wrinkling. The first leg 

 is broad and touches both eye and antenna, and is marked with 

 fine sharp transverse ridges, but markedly flattened down along the 

 tarsal portion. Between this and the maxillae is a very narrow smooth 

 area about 3'5mm. to fomm. long (the 1st femur?). The second 

 legs are comparatively very narrow, with similar (transverse 

 anastomosing) ridges to those on first. The maxillae extend to 



