33 ORDER COLEOPTERA. 



sides hairy. Elytra bluish black or obscure cupreous ; humeral lunule nearly inter- 

 rupted in the middle, and dilated at the extremities ; intermediate liand composed 

 of two imperfect semicircles, or two crescents united at their tips ; legs long, bluish 

 green; trochanters purple. Head and thorax metallic blue beneath ; breast green; 

 sides hairy. G iuld, Trans. Nat. Hist. Soc. Boston, p. 62-8. 



Discovered by Dr. T. W. Harris on the summit of Blue hill in Milton (Massachusetts), 

 occupying the naked rock and the patches of mosses growing thereon. Its name is derived 

 from the fact, that in flying, its abdomen appears like a drop of blood suspended to its 

 tail. 



APPENDIX TO CICINDEM. 



Cicindela campestris (Linn.). ( Plate xvii, fig. 6.) 



Above dull green, sometimes richly resplendent with coppery and golden reflections. 

 Elytra very finely shagreened, green, with from three to six pale spots on each, dis- 

 posed one externally on the shoulder, three on the outer edge of the elytra, one on the 

 tip and one in the disk. Beneath green, with rich coppery red hues ; legs bright copper 



glossed with green, especially on the tarsi ; labrum whitish. 



Stephens, p. 11, illustrations, etc. 



This is a common European species, introduced here for the purpose of comparison with 

 ours. 



CaraBidss. 



The insects embraced in this natural family, or group, possess several characters in com- 

 mon, l>y which they are distinguished from the cicindelidse, and from those which are to 

 follow. The distinguishing characters, as given by systematic writers, are as follows : 



' Anterior tibiae without emarginatioii on the inner side. Head narrower than the thorax ; 

 ' eyes rather prominent ; palpi with the terminal joints often compressed, large, and 

 ( somewhat triangular- in shape ; mandibles simple, moderately long and rather thick.' 



'I his family is divided by Westwood into five sub-families, each embracing several allied 

 genera. With the intention of giving these sub-families a natural arrangement, Westwood 

 places first upon the list the Brachinides, which stand near the head of the Geodefhaga ; 

 and ends with the Btrnbidiirles, the sub-aquatics, or the sub-family which links the Geo- 

 dephaga with the Hydrodephaga. The order, then, in which the several sub-famibes stand 

 to each other, is as follows : 



