IN COLEOPTEROUS INSECTS. U. I 



Observation*. — It is strange thai a peculiarity belonging to 

 three species, all known to Fabricius, should have escaped his 



notice. As the genus Jihipiphonu is now large, I think it 

 is well t<> make a division, which is so natural ami easily ob- 

 served. All these insects live on flowers, and arc very quick 

 in their motions. 



Explanation of tin Plate. 



Fig. I. Chauliognathus marginatus (Gantharia margina- 



ta? F.). 



a. mandible. 



b. maxilla in a dried state 



c. labium and lingua. 



d. labrum. 



e. maxilla in a recent state, with its protruding appendage. 

 /. caruncles, or ventral bags. 



Fi<^. II. Chauliognathus bimaculatus (Cantharis bimacula- 

 ta. F.). 



a. mandible. 



b. maxilla whin dried. 



e. labium and lingua. 



if. labrum. 



». maxilla in a recent state with its protruding appendagi 



Fi^-. [II. Macrosiagon dimidiatum (Rhipiphorus dimidia- 

 tus, P.). 



a. b. c. (I. tropin. ' 



• This paper was read before tbi 3 - ember 19th 



v OL. III. — '> B 



