AUGIADES SYLVANUS. 141 



segments are lenticles ranging with iii, and on each a pair ranges with ii, 

 which on mesothorax are accompanied by a hair, the base of which 

 much resembles a third lenticle. The lenticles are little black raised 

 rings with clear centres, and are from O03mm. to 0-04mm. in diameter. 

 The true legs are light brownish. The prolegs are complete circles, 

 quite round, and 0'4mm. in diameter when expanded, the hooklets are 

 in one row, but alternately large and small, and about sixty in number. 

 At the inner posterior aspect for four or five hooklets there is, on 

 one or two prolegs, a decided weakness of the hooklets, one or two being 

 only horny points ; on other prolegs the circle is quite complete. 

 The claspers are larger but otherwise much the same, except that 

 they are deficient along the posterior margin for about one-quarter 

 of the total circumference (Chapman, October 12th, 1905). ? Same 

 instar (after hybernation) : About 13mm. long when at rest, 15mm. 

 when crawling. Head large; prothorax constricted; the body, from 

 lst-6th abdominals, almost cylindrical (although slightly wider at 

 1st abdominal), thinning off rapidly to prothorax and anus. Colour 

 of body dull green, except at the anal segment, which is brownish ; 

 skin covered with minute, shiny, black points, here and there also are 

 scattered metallic-looking points. The subspiracular flange is paler, 

 inclining to white ; the skin-surface covered with a thick clothing of 

 minute hairs ; a slightly darker, mediodorsal, longitudinal line, and a 

 rather paler subspiracular line. Head oval in outline from front, 

 sloping upwards and backwards, exceedingly rough, brownish-black in 

 colour, with more definitely black markings, and covered with short 

 stiff bristles ; the mouth- parts shiny black, the ocelli also shiny black 

 and conspicuous. The prothorax narrow, apparently divided into 

 three subsegments, the meso- and metathorax into four subsegments, 

 the 1st and 2nd abdominals into five, and the 3rd to 7th abdominals 

 into seven, subsegments, whilst the last segments are less distinctly 

 subdivided, the 8th appearing to have almost three equal subsegments, 

 the 9th undivided, whilst the 10th consists of a large anal flap that 

 shows no segmentation ; in the abdominal segments 1-7, the 1st sub- 

 segment is much wider than the others. The bases of the primary 

 setae appear to be traceable as rather larger black points than those so 

 abundantly spread over the skin-surface, but it is difficult to locate 

 them for certain. The spiracles are somewhat flesh-coloured, inclining to 

 brown, those on the prothorax and 8th abdominal conspicuous, the others 

 small and inconspicuous, and all placed just above the subspiracular 

 flange. There is also a series of supraspiracular lenticles, almost 

 exactly of the same colour as, but larger than, the spiracles, which 

 might be connected with the supraspiracular tubercles, but do not 

 seem to be so. The venter is flat, the skin much folded and wrinkled, 

 the colour rather fuller green than the dorsum ; the true legs paler 

 greenish, glossy-looking, with a dark brown terminal hook, and rings 

 of tiny, down-pointing hairs at the joints ; the prolegs are of the same 

 green hue as the venter, with bristles at the joints, which are large and 

 well-marked ; the terminal hooks also pale brown (Tutt, April 21st, 

 1905). ~binal instar : 25mm. in length, the figure, viewed from above, 

 nearly even in width, tapering a little at prothorax and anal segment, 

 but viewed sideways it tapers in a carve considerably from 4th to the 

 terminal segment, which last is flattish, and forward again to prothorax, 

 which is the smallest segment ; the head is like a knob, but the lobes 



