550 CLASS vii r. 



Compare C. ZIMMERMANN Ueb. die Usherige Gattung Amara, in GISTL 

 Faunus, Zeitschr. f. Zool. 1. 1, s. 140 ; SCHIODTE in KROYER'S Tidskrift 

 * PP- 3965 and p. 99. 



Genera: Myas ZIEGL., Cephalotes BONELLI, Colpodes MAC L., 

 Sphodrus GLAIR v., BON., Ctenipus LATE., Galathus BONELLI, 

 Taphria BONELLI. 



b) Abdomen petiolate. Antennae often broken, rnoniliform. 

 Scarites FABR. 



Add several genera and sub-genera : Apotomus HOFFMANS., 

 Ditomus BONELLI, Morio LATR., Dyschirius BONELLI, Clivina LATR., 

 Camptodontus DEJ., Oxystomus LATR., Oxygnathus DEJ., Scarites 

 FABR. in part, Acanthoscelis LATR., Scapterus DEJ., Pasimachus 

 BONELLI. 



Sp. Scarites arenarius FABE., Tenebrio fossor L., PANZER Deutschl. Ins. Heft 

 43, Tab. 1 1, CLAIRVILLE Ent. helv. n. Tab. vm. fig. A, a. 



Carenum BONELLI. 

 Siagona LATR. 

 JEnceladus BONELLI. 

 Ozcena OLIV., Morio LATR. 



Note. Add sub-genera JBasoleia and Melisodera WESTWOOD, whom see 

 in GUERIN Magas. de Zool. 1835, PI. 132. These coleoptera form the 

 transition to the carabici with truncated elytra, with which, according 

 to the opinion of some authors, they would be more correctly classed. 



* Elytra truncated at the apex or obtuse. 



Truncatipenes LATR. ; a subdivision scarcely to be defined by certain 

 limits, separate from the preceding by negative characters ; compare WEST- 

 WOOD Modern Classification i. p. 75. Tarsi mostly not different in the 

 sexes. Claws of tarsi often denticulate beneath. 



Different species of the typical genus of this division, Brachinus 

 (Aptinus BONELLI), eject for their defence an acrid fluid from the 

 anus, which presently evaporates with an explosion and causes an 

 inflammation on the skin. Hence the name of Bombardier-beetle. 



ROLANDER gave the first account of this peculiarity in the Transactions 

 of the Academy of Stockholm for 1750. See, on the parts which secrete 

 the fluid, LEON DUFOUR, Ann. du Museum, xvm. 1811, pp. 70 81, PL 5 

 (in Aptinus ballista], and especially Ann. des Sc. natur. vm. pp. 6 14. 



