248 THE ENTOMOLOGIST. 



with my insect, so that I was obliged to bethink me of a 

 name ; and, in consideration of its near relationship to 

 Neniatus ventricosus, I called it Nematus consobrinus. The 

 points of difference between the two species are shown in 

 plate 10, and will appear from the following description. 



After I had already been in possession of full-grown larvge, 

 some very young examples were sent to me on the 2 1st of 

 May, 1870, from Haarlem (fig. 1): they had shining black 

 heads and black thoracic legs ; the body was sordid pale 

 green, having a few, but rather large, black spots on the back 

 and sides. The full-grown larv« are represented at figures 

 2 to 6 ; the description is as follows : — Head shining green, 

 with numerous little black spots on the vertex, placed in 

 curved rows, and reaching to the clypeus ; each of these 

 spots bears a hair. Eyes in round black spots at each side 

 of the head. Body cylindrical, with twenty feet; colour sap- 

 green, with yellow and bluish green. The 1st segment is 

 almost entirely yellow, as are also the large folds of the skin, 

 or rather protuberances, on the sides of the 2nd and 3rd 

 segments (faint) ; segments 4 to 10, and almost the whole of 

 the Uth, are also yellow. The penultimate segment and the 

 first half of the terminal segment are bluish, the other half of 

 the latter being yellovv. The dorsal line is very narrow, and 

 somewhat bluer green than the ground colour. The segments 

 have transverse rows of little, black, shining, wart-like spots, 

 each bearing a hair. On either side of, and close to, the anus 

 is a yellow spine, having a black tip. 



The larvae were in considerable numbers together; they 

 were very voracious, and stripped a branch pretty speedily ; 

 their usual posture was that .-^hown at fig. 3, or even a little 

 more bent, — sickle-shape. About the 2(ilh of May they 

 changed their skin for the last time, when all the little wart- 

 like projections or points, and all the hairs, disappeared. 

 The head was now pale green, smooth and shining, but the 

 eyes were still situate in round black spots; the jaws were 

 brown. The body was of the same green tint as before, the 

 dorsal line being blue and thicker; also there was more 

 orange-yellow on the whole of the 1st segment, as also on 

 the folds above the thoracic legs, and on large spots at the 

 sides; the entire 11th segment was of this colour, as also the 

 12th, or last, at the anus. 



