armatures in the Hymenopterous ficnus CoUetes. 61 



33. Cunicularius, L. PI. VIII, 33, 33a. PI. IX, 40, 48. 



This being so common and well-known a species — rare 

 perhaps nowhere except in our own islands — I will merely 

 point out the unusually attenuated " wings " of its 

 sagittse, and the detachment of the " costae," both exterior 

 and interior, from the lobes of the seventh ventral segme.it. 



34. Formosus, Perez. PI. VIII, 34, 34«. PI. IX, 39. 



35. Cariniger, Perez. PI. VIII, 35, 35a. 



In these extraordinary species, which must surely be 

 nearly related in spite of considerable external differ- 

 ences, I may leave (I think) my figures of the dissection- 

 characters to speak for themselves. 



Formosus ^, determined by its author, was sent to me 

 by M. Vachal; cariniger I have taken myself in Egypt, 

 and its female (I believe) in Spain, and I have also seen 

 specimens (^ and $) taken by the late Sir S. S. Saunders 

 in the Balkan peninsula. 



I am strongly inclined to think that formosus is the 

 real " lacunatus " of Dours, and cariniger his " collaris." 

 Everything at all distinctive that I can see in Dours's 

 descriptions bears out this view ; but as his types seem 

 to have disappeared, and I do not know the $ oi formosus, 

 it is more prudent perhaps to adopt at present synonyms 

 which are certain. 



Explanation of Plate VI. 



(Characters of Colletes $ ^ .) 



