a new Genus of Infe&s. tng 



login: who has drawn out natural chara&ers for infects (??i). To point 

 out at firft thofe circumftances in which all the individuals of a 

 genus agree, is certainly extremely ufeful, and fpares much unne- 

 ceffary tautology when we come to defcribe them. I fhall there- 

 fore follow his example upon the prefent occafion. 



AMMOPHILA. 



Sandwafp. 

 Character Naturalis. 

 Caput fuborbiculatum, fubdepreffum. Roflrum corneum, inflex- 

 urn, fubulato-conicum(«), vagina trivalvi ; vahulis duabus 

 fuperioribus {o) femifagittatis medio palpigeris, palp's fex- 

 articulatis ; inferiori (p) apice biariftata (q), arifiis membra- 

 naceis ; palpis duobus quadriarticulatis inftruclia (r) ; //«. 

 guam fubmembranaceam, retraclilem, tubulofam, fubclava- 

 tam, clava bifida, exerens (s). Labium inflexum. Maxillte 

 forcipata? minaces,. apice tridentatae:, dente interior! minimo, 

 intermedio magno truncato, exteriore maximo acuminato (t\ 

 Antenna filiformes, thorace breviores, faepius tredecim arti- 

 culorum(w), medio fronris infertae [y). Oculi ovales, dif- 

 tantes. Stemmata in triangulum difpofita* 



{m) Ego primus, in Entomologia, chara&eres naturales compofui,*introduxi, quibus 

 omne fyftema niti debet. Fabric. PblloJ. Entomoh Hamburg. 1778, VI. j 28. 



(«) Tab. XIX. No. I. ng. 4. a. (*) fig. 1. (p) fig. 2. c. 



(q) fig. 2. dd. (r) fig. 2. C (s) fig. 2. f. and fig. 3.. (*) fig. 5. 



(u) The three firft joints of the antennae differ in form from the reft — The firft, or bulb, 

 is fcarcely vifible without a magnifier, the fecond is very large, and the third very fmall. 

 In one fpecies they confift of fourteen joints. 



(v)fig.6. 



Collum 



