224 ADDENDA. 



the middle of the face, and consist of thirteen of* 

 fourteen joints: its stemmata are very large and 

 prominent : its face behind the antennae swells into 

 two protuberances: its thorax is extremely gibbous: 

 and overhangs the head : its scutellum is large and 

 gibbous : the base of its wings is not defended by 

 squamulae: its legs are very short; the second joint of 

 their apophyses is of a very singular shape, being con- 

 cavo-convex, very thin, and emarginate at its apex ; 

 the thighs are compressed, very flat and thin, and 

 the tibiae and tarsi short and slender : the abdo- 

 men is elongate : the spiracula, which is remark- 

 able, are easily discovered in its dorsal segments, 

 and the last ventral segment terminates in two 

 truncate setae, like some of the Neuroptera, with 

 which class this insect seems to have some affinity. 

 If Termes was placed at the end of that class, and 

 Dorylus at the head of this, I think we should not 

 depart far from the order of Nature. I know not 

 whether the neuter of Dorylus be apterous or not, 

 but I suspect it may. 



MUTILLA. TheLinnean^rf?/?cm/ Character ai 



this genus is very insufficient. One drawn up in the 



following terms would apply well, at least to all the 



species that 1 have had an opportunity of examining. 



Os proboscide brevi, palpis setaceis : 



^?zze?i72^ anteriores, spirales, articulis 13—- 14, 



apice fusiformi : 

 Oculi minuti, subrotundi, laterales : 

 AliE et Stemmata neutris nulla : 

 u^culeus reconditus. 



I have. 



