44 MIOCENE FAUNA. 



caraboides) presents the long narrow elytra of an American spe- 

 cies (C. longipenne, Dej.), which makes the transition to the 

 Carabi. 



The Calosomata no doubt frequented the forests; but two 

 species of Nebria, a small Brachinus, an elegant Cymindis, 

 several delicately formed species of Badister and Stenolophus, 

 and a minute Bembidium most probably lived near the shores 

 of the lake of (Eningen, and concealed themselves under stones 

 and dead plants. (Eningen has furnished seven species of 

 Amara and fourteen species of Harpalus, for the most part 

 nearly approaching European species, as is shown by the insects 

 represented in figs. 284 and 285. One species of this group, 



Fig. 283. Fig. 285. 



Fig. 28-1. Fig. 286. 



Fig. 283. Calosoma Nauckianum, Heer. 

 Fig. 284. Harpalus tardiyradus, Heer, four times nat. size. 

 Fig. 285. Amara princeps, Heer, four times nat. size. 

 Fig. 286. Sinis brevicottis, Hear, four times nat. size. 



however, constitutes a peculiar extinct genus (Sinis brevicollis, 

 Heer, fig. 286) ; and another form (Dichirotrichus) occurs now 

 only upon salt marshes. 



D. Hymenoptera. 



The Hymenoptera, from their including the wasps, bees, and 

 ants, are among the best-known of insects. The care with 

 which they provide for their young, the marvellous dwellings 

 which they construct, and the various ways in which they pro- 

 cure their nourishment have always attracted attention. 



