1. CIMBEX. 5 



Shining violaceous, black above, duller below ; three yeLow spots, 

 increasing in size, on the sides of segments 3-5 of the abdomen ; 

 segment 7 edged behind with tawny above, and, with the following, 

 wholly tawny beneath ; segments 8 and 9 wholly tawny, except a 

 dark mark on the back of segment 8. Antennae violet-brown at 

 the base, and yellow beyond the third joint. Femora blue-black ; 

 tibiae yellowish brown ; tarsi yellowish. Wings purplish hyaline, 

 strongly iridescent below the stigma and on the outer half of the 

 fore wings. 



Hah. Japan. 

 a. $ . (Type of species.) Tokei. Montague Fenton, Esq. 



10. Cimbex americana. 



( J Plate I. fig. 2 ; 2 Plate XVI. fig. 2.) 



c?. Cimbex americana, Leach, Zool. Misc. iii. p. 104, n. 3 (1817). 

 2 . Tenthredo femorata, Abbot, Drawings of the Insects of Georgia 

 (MS8. in B. M.), xii. pi. lxi. (1792). 



Exp. al. 2 poll. 2 lin. ad 2 poll. 3 lin., long. corp. 13-14 lin. 



Male. Head and thorax blaek, finely punctuated and clothed 

 with hair; cheeks deep violet. Antennae black at the base, the 

 basal joint tufted ; third joint piceous, shading into luteous ; the 

 joints beyond and the tarsi luteous. Femora and tibiae deep 

 blue, densely clothed with hair, which is very long on the tibiae. 

 Abdomen deep violet above, with a luteous membrane at the base ; 

 under surface black. Wings hyaline, with piceous nervures, clouded 

 at the tips and below the stigma. 



Female. Head, thorax, and legs black. Antennae, eyes, tarsi, 

 basal membrane, and two spots on each side of the abdomen yellow. 

 Abdomen violaceous. Wings brown. 



The description and figure of the female are taken from Abbot's 

 drawing, which is accompanied by the following note : — " Taken 

 4th April, near Briar- Creek Swamp, and bred in stumps of trees 

 that have been cut down. I have taken them, when laying their 

 eggs, with their tails thrust into the wood so far that they were 

 sometimes not able to disengage themselves. Rare." I suspect, 

 however, that this observation, which is repeated in the case of a 

 species of Hhyssa, was not originally intended to apply to Cimbex. 



This species has always been mistaken for the following ; but the 

 hind femora are shorter and much more swollen. The specimen 

 agrees with Leach's description, and is probably his type ; but the 

 dimensions given by him (long. corp. 13^, exp. al. 25| lin.) some- 

 what exceed those of our specimen. 



Hah. Georgia. 



a. $ . (Type of species ?) Georgia. (Probably from Abbot's 



collection.) 



