Innccis. 7573 



petiolated, and the first joint of the hinder tarsi but slightly ex- 

 panded. The head is pale ochreous-yellow ; the eyes black, and a 

 black spot on the crown of the head, in which spot are found the ruby- 

 coloured ocelli; the size of this mark varies in different individuals. 

 The mandibles are brown ; the antennae black. The under side of 

 body is ochreous-yellow, with the exception of two small black spots 

 on the sides beneath the wings ; the dorsum is a mixture of yellow 

 and black. On the thorax, the gi-eater part of the central lobe and 

 the two lateral lobes, as also the metathorax, with the exception of 

 the post-scutellum, are black, and on each segment of the abdomen is 

 a shining, black, transverse band (fig. 4). In the male the black colour- 

 ing is more diffused, so that both the scutellum and post-scutellum 

 are frequently black. In this sex also the bauds on the abdomen 

 present themselves as black triangular marks, having the apices 

 in the direction of the terminal segment (fig. 5). The first seg- 

 ment of the abdomen in the male is excised or notched, so that 

 there is a triangular opening between the corneous integument of that 

 segment and that of the second, which opening is filled in with a white 

 membrane. 



The legs are yellow in both sexes, with light brown tarsi on the 

 first and second pairs, and light or sometimes dark brown tibiae and 

 tarsi on the posterior ; in the males these tibiae are sometimes yellow 

 on the under side. The borer of the female is black, and projects 

 somewhat beyond the abdomen. Viewed under the microscope the 

 saw appears very simple, having a curved back and a straight edge 

 with irregular teeth projecting in a backward direction, and which do 

 not greatly exceed fifteen in number. The ovipositor is curved, and 

 shuts witli its concavity on the rounded back of the saw; its shape 

 can be seen in fig. 6, that of the saw in fig. 7. 



I am unable to say anything respecting the egg or the manner of 

 ovipositing. I have no doubt this sawfly has more than one brood in 

 the year ; I observed a second generation in the month of July at 

 Brummeu, and believe in the possibility of a third. 



I thought il as well to retain our term, anal, for the whole cell, and to designate Hartig's 

 Area lanceolata as the anterior porlijii of the anal cell, leaving the remainder to be 

 spoken of as the posterior portion. The German author employs the different forms 

 assumed hy this anterior portion of the anal cell (which are very constant) to separate 

 the genera of Tenthredonids into groups. See Hartig's ' Holz-und Blattwespen,' 

 pp. 25 and 40 ; and for the figures of the various forms of the cells, tal). ii. figs. 32 

 to 37.— J. W. M. 



