fnsects. 7721 



marginal and submarginal cells. Coxae black ; trochanters yellow ; 

 femora more or less spotted with yellow and black ; tibiiE and tarsi 

 reddish yellow or light orange. 



The saw and ovipositor of the female are long and slender, both 

 somewhat curved, especially at the basal extremity. The saw is 

 marked off by transverse lines into about twenty divisions, of which 

 the foremost have one rounded tooth and the basal two ; those divisions 

 which are furnished with two teeth have also little longitudinal folds 

 (see figs. 6 and 7). 



The manner of oviposition, as also the shape and colour of the eggs, 

 I have not observed. From what has been stated above it clearly 

 appears that this sawfly has only one brood in the year. 



Cladius viminalts. 



Fallen, Kongl. Vetensk. Acad, nya Handllngar. t. xxix. p. 117. 

 Hartig, Fain, der Blatt. mid Holzwespen, p. 177 (C. eucera, 

 Mus. Kleg.) Bouche, Naturgesch der Ins. S. 140. Lepel. de 

 St. Fargeau, Monogr. p. 61, No. 179 (Nematus grandis). Ratze- 

 hurg, Forsiinseclen, iii. p. 129, Taf. iii. f 9. Brischhe, Blatt- 

 wespen-larven, 1 Lief S. 9. tab. ii. f. 1, a, b. 



Cladius fulvus, capite, thoracis dorso, scutello et macula pectoral! 

 nigris, tarsorum articulis fuscis, basi fulvis, alarum stigmata 

 fulvo. 



From the above references it will be seen that this sawfly has been 

 by some authors placed in the genus Cladius, and by others in Ne- 

 matus. The neuration of the wings, however, will show that it can- 

 not be ranked in the latter genus, although at the same time the 

 insect in question does not very well fit into the group of the ordinary 

 Cladii ; for not only does it differ in the shape of the saw and borer 

 in the female, and in the parts of the mouth in both sexes, but the 

 entire facies, the size and colour, have something that recalls the 

 Nemati ; and Cladius viminalis may properly be regarded as a form 

 leading from one genus to the other. This species might thus be 

 separated as a sub-genus of Cladius ; but as I am very reluctant to 

 add, without absolute necessity, to the thousands of existing genera 

 and sub-genera, I shall continue to regard our insect as belonging to 

 the genus Cladius. 



I am acquainted with the larvae of the five indigenous species 

 belonging to this genus : those of the species about to be described 

 are not rare, and are conspicuous, when full grown, on account of 

 VOL. XIX. 3 I 



