OARABIDAE. 9 



to bear the same relationship to each other that Damaster does 

 to Carabus. 



In Nomarelus and one group of Ctjchr-us (Sphsroderus), the 

 lip of the prosternum is somewhat prolonged. 



Tribe IV.— CARABIIVI. 



Antennie slender, with four basal joints glabrous, arising under 

 a feeble frontal ridge. E3'es round, moderately prominent and 

 distant beneath from the buccal opening. Head not constricted 

 behind the eyes, with but one supra-orbital setigerous puncture. 

 Labrum broad and emarginate. Mandibles .stout, arcuate, acute 

 at tip, concave on the outer side and without setigerous puncture. 

 Mentum broad, emarginate, with a variable tooth. Ligula vari- 

 able, the paraglossse distinct. Ma.xilliB with inner lobe strongly 

 hooked, densely ciliate within, outer lobe stout. Palpi moderate 

 or long, last joint of both pairs securiform. Thorax with a seti- 

 gerous puncture at the side and one also near the posterior angle. 

 Body not pedunculate, scutellum small. Elytra feebly embracing 

 the sides of the body, the lateral margin continuous. Prosternum 

 horizontal at tip and prolonged, the anterior coxal. cavities open. 

 Mesosternura nearly vertical and subcarinate in front. Meta- 

 sternal epimera invisible, posterior coxte contiguous. Anterior 

 tibiae gradually broader to tip, slightly grooved within, the spurs 

 terminal but placed obliquely to each other. Femora moderate, 

 the anterior stouter. Middle and posterior tarsi long and slender, 

 the anterior shorter. 



In the males the anterior tarsi are dilated and densely pubes- 

 cent beneath, the dilated joints variable in number, simple in both 

 sexes in Damaster, a Japanese genus. 



This tribe is composed of species of at least medium or even 

 of large size, remarkable for tlu; most part for their beauty of 

 form, color, and sculpture. 



Within our faunal limits but two genera occur, separated by 

 the form of the third antennal joint. 



Third joint of antennae cylindrical. Carabus. 



Third joint of antcnnre compressed. Calosoma. 



In the number of species these genera in our fauna reverse 

 that of Europe where Carabus is far more numerous than 



