The Zoologist — July, 1869. 1735 



brown spots; the anterior part of the anal cell is clivided by a straight 

 nervure. The first segment of the abdomen is bronze coloured, and 

 has a deep semicircular emarginalion on the dorsum, the space being 

 occupied by a white membrane. The second segment is deep purple; 

 the third yellow, with abroad purple spot, occupying the centre of the 

 dorsum; the fourth yellow, with a longitudinal purple mark in the 

 middle ; the remainder yellow. The divisions between the segments 

 are mostly deep purple. Tlie ventral surface is dark, either brown or 

 purple. Tile valves of the ovipositor are deep brown, and covered 

 with stiff hairs. Although I have so often kept the cocoons of this 

 species, and that for long periods, I have never been fortunate enough 

 to rear a male insect; but Professor Zaddach's expressions respecting 

 that sex are so precise, that I have felt no hesitation in representing a 

 male at fig. 16, from a specimen taken by M. Fransen, near Rotter- 

 dam, and preserved in the Museum at Leyden. This writer, after 

 enumerating the characteristics which distinguish the male of 

 C. connata according to the diagnosis of Ratzeburg, continues — 

 "Weit mehr in die Augen fiillend als dieses Merkmal, auf welches 

 Herr Ratzeburg aufmevksam gemacht hat, ist ein anderes, welches 

 in den Fliigeln liegt. Diese sind nilmlich durchsichtig und tragen 

 bald scharfer, bald weniger scharf die gewohnliche Zeichnung, aber 

 die ganze Flache des Fliigels zeigt von der Seite gesehen einen sehr 

 schonen, und lebhafl hellblauen Atlasglanz." With this charac- 

 teristic as a guide, I have for years past been able easily' to separate 

 the males of the different species of sawflies found in this museum 

 under the collective name of C. variabilis, the difference being imme- 

 diately perceptible. The male which I have represented was twenty- 

 two millimetres long, with a flight of forty-five millimetres. Head, 

 thorax, coxae and femora black, with a purplish glow ; the abdomen 

 is purplish black, a reddish tinge being perceptible on the terminal 

 segments; the basal half of the antennae is brown, the remainder being 

 orange; the tibiae are deep brown, the tarsi ferruginous. The whole 

 body is covered with black and brown hairs. The wings are trans- 

 parent, the nervures being ferruginous, and the stigma dark brown • 

 as mentioned above they have a tserulean reflection in proportion as 

 the light falls upon them. 



The ovipositor and saw of the female, represented at fig. 17, have 

 been accurately described by Lyonet : according to his figure the saw 

 differs in some measure from that of Cimbex Saliceti, lutea, or what- 

 ever the species may be called, which lives on willows. At fig, 18 



