26 MUTILLIDA, 
acute spine, which does not extend beyond the apex of the 
plates. 
Type, M. Ichneumonides. 
t4+ This genus was first established by Latreille, in his 
“‘ Histoire,” for the female; the male which was afterwards 
sent to him by Monsr. de Sanvitali he formed into a genus 
by the name of Tengyra, in his Genera, in 1809, and which 
he placed with Tiphia in the first tribe of his Fossores ; 
but Monsr. Wesmael, of Liege, was led subsequently to 
suspect that it might possibly be the male of Methoca, as 
he always captured them on the same spot; and this was 
afterwards confirmed by his repeatedly taking them in 
copula. The disparity of the sexes is so remarkable, that 
without this corroboration his supposition could never have 
been received. This fact Vander Linden communicated in 
the “ Annales des Sciences Naturelles,” Jan. 1829, and 
which he has also published in the preface to the second 
part of his ‘‘ Observations sur les Hyménopteéres d’Europe.” 
It is singular that since these observations have been made 
Nees should place the female in the genus Gonatopus of 
the family of the Dryini. 
Sp. 1. IcHNeumMonipes. Lat. 
nigra, nitida, thorace pedibusque rufis ¢. 
mgra immaculata @. 
length 9 2—3% lines, ¢ 53. 
¢ Lat. Hist. 13. 269; Nouv. Dict. I. H. N. 20.488; Genera, 4. 118 ; 
Guerin, Icon. du Reg. An. Insectes, Pl. 69. f. 7; Curtis, Brit. Ent. 
V. 7. pl. 329. 
Mutilla formicaria. Jurine, Obs. Hyménop. P. 266. Pl. 13. fig. 49. 
Gonatopus mutillarius. Nees ab Esenbeck, Hym. Ichneu. Affin. tom. 2. 
384. 
$ Tengyra Sanvitali. Lat. Gen. 4. 116; Vander Linden, Obs. pt. 1. 
p- 13; Guerin, Icon. Pl. 69. f. 8. 
Head black, smooth, shining, with a few scattered punctures ; 
