84 Journal New York Entomological Society, t^'o'- xxviii. 



In Amara ohesa the anterior edge of the grooves on the anterior 

 femora is sharply carinate from the apex for about four fifths the 

 length of the joint; the posterior for one quarter only. In Badistcr 

 pulchellus the anterior carina is still stronger and entire, ending on 

 the center line of the joint. Unequal carination of the edge of the 

 grooves is also found in Loxandrns and Diplochila. In the males of 

 Chlccnius laticollis the anterior caringe of the anterior femora end 

 in a prominent acute tooth at less than one quarter from the base. 

 The tooth is on the center line of the joint. The posterior carinae 

 vanish a short distance in front of the tooth. In the males of 

 Chlccnius prasimis the edges of the grooves are not carinate; there 

 is, however, a short, obtuse tooth, whose apex is carinate at about 

 one third from the base. This tooth is not on the center line but 

 anterior to it, on the edge of an evenly outlined groove. In Chlccnius 

 ruficauda, also, the edges of the grooves are not carinate. In the 

 males of this species there is a short, acute tooth at one fourth from 

 the base, situated as in prasinus. In Nehria ovipennis both edges 

 of the anterior femoral grooves are carinate and vuiite in a distinct 

 point at about one fourth from the base; in the closely allied Nehria 

 gehleri both edges of the grooves are strongly carinate and entire 

 to the basal margin, where they do not unite. In Pachyteles tes- 

 taceiis, a small species placed in the tribe Nomiini, there is a large, 

 very acute tooth on the anterior edge of the femoral groove, about 

 two fifths from the apex. Between the tooth and the apex the edge 

 is not carinate. There is a strong carina, however, from the tooth 

 to the base of the joint, which is continuous with the strongly com- 

 presso-carinate trochanter, the only instance known of a modification 

 in the form of the latter. 



The most important structural modification in the form of the 

 tibiae is found in the interior groove of the anterior pair. In the 

 Cychrini there is a long straight groove on the interior face, evanes- 

 cent toward the base and widest and deepest at the apical margin 

 between the two spurs. In Nehria sahlhergi, Leistus ferrugineus or 

 Calosoma calidnm, the groove is not straight, but curved apically 

 against the posterior spur, which is slightly higher on the tibia than 

 the other spur. The curve in the groove is still more pronounced 

 in the genus Blethisa, and the groove instead of terminating on the 

 apical margin of the tibia as in Cychrus, terminates in the lateral 



