APIS. (**. c. 1. «.) 227* 



I observed above (k), that ^. conica and quadri- 

 dentata were male and female, it will perhaps be 

 expected that I should here assign the reasons which 

 induced me to adopt this opinion. 



Any one who compares these two inSects toge- 

 ther, will immediately perceive between them the 

 most striking resemblance, and that the only dif- 

 ference arises from the anal spines or teeth, and 

 more thickly coated face of A, quadridentata. 

 Now as these circumstances are common dis-^ 

 tinctions of the male sex in all the subdivisions of* 

 this family, they will not furnish a sufficient rea- 

 son for separating insects which are so very similai" 

 in other respects, without specimens of each sex- 

 can be produced, distinguished in one ilistance by 

 an acute anus, and in the other armed with anal 

 spines; but as those which exhibit the former 

 character are invariably aculeates, and those that 

 possess the latter as invariably males, I think this 

 alone will sufficiently justify me for putting them 

 together. Rossij although apparently not aware 

 of the difference of sex of these two insects, seems 

 to think yi. quadridentata a variety of j1. conica, 

 " Alia," says he, under A. conica, " prsetcrea spe- 

 cimina habemus, statura et habitu omnino prioribus 

 simillima, quae cum habeant abdomen conicum, 

 atrum, marginibus incisurarum quinque albis, aniim 

 quadridentatum dentibus intermediis bifidis. A, 

 quadridentatce nomine determinari possent. 

 (k) Vol. 1. p. 153. 



VOL, II, ft Ij) 



