544 Mr. C. L. Withycombe's Notes on 



a frosted appearance. These projections always remain 

 colourless. The micropylar knob is large, smooth and chalky 

 white. Relatively it is three or four times the diameter of the 

 same structure on the egg of Hemerobius. At first the egg 

 is yellowish-white in colour, but begins to darken in a few 

 days, and after about a week it is dark brown, especially 

 so at the micropylar pole. The micropylar knob remains 

 conspicuously white. Sterile eggs do not darken at all, 

 but become graduall}^ shrunken. Last year I kept the 

 eggs which had darkened, for some months, then, con- 

 sidering them lifeless, put them in spirit. This year again 

 the same thing has happened M'ith a large number of eggs 

 from wild caught females. The eyes of the embryo are 

 not visible, but I am convinced that these must be fertile 

 and shall await events. 



Young larvae I have nob seen. The second and third 

 instars are similar. 



Description of Tliird-inslar Larva. (Plate XL, fig. 7.) 



Length when full fed about 9 nun. Body-colour opaque crcamj^- 

 white, v.ith interrupted, broad, chocolate-coloured, latero-dorsal 

 bands. 



Head whitish with fuscous markings. These markings are 

 characteristic. The general plan is as in larvae of Hemerobius, i. e. 

 there is a central wedge-shaped brown mark, fading at the anterior 

 margin. Laterally the head is brown, with a lighter line at the 

 same level as the eye on each side. Between central and lateial 

 marks are two smaller marks, one running towards the base of each 

 antenna, but fading before reaching it. These two marks are distinct 

 for concinna, though anteriorly they may tend to merge into the 

 lateral marks, near the ej^es. Eyes black; antennae blackish; 

 palpi also blackish, but more esijecially the last joint cf same. The 

 jaws are dark fuscous, with the apical fifth distinctlj^ castaneous. 



Body creamy-white, with two rov/s of chocolate- coloured blotches 

 latero-dorsally. These blotches are broadest anteriorly on each 

 segment and pass well down the sides. Posteriorly they narrow and 

 are interrupted from one another. The prothorax has a pair of 

 latero-dorsal brown lines extending througliout the first tv/o divisions 

 of that segment. The posterior division, which bears the spiracles, 

 is immaculate and wholly white. Imbedded in the latero-dorsal 

 bands is a pair of semi-lunar blackish sclerites. The latero-dorsal 

 bands of meso- and metathorax are similar to those of the abdominal 

 segments. They are composed of one pair of chocolate-coloured 



