398 



NATURAL HISTORY OF ARTHROPODS. 



Fig. 489. 



Fig. 490.— Pairotes 

 rujipes. 



Fia. 491. —Bem- 

 bidium lavigo/- 

 tv/m. 



slender and with long legs. Its color is light brown. This species is eyeless, although 

 Grenier states that A. aubertis, from southern France, has minute non-pigmented eye- 

 spots, and that these spots are black in A. milleri, from Hungary. The 

 larva of an Anophthahnus from Mammoth Cave has been carefully 

 described by Mr. H. G. Hubbard. The larva has no 

 ocelli, and Mr. Hubbard writes of it that, " except in 

 its very elongate form, I can find no striking differences 

 between this and other Carabid larvffi allied to Trechus^ 

 Treclms and Patrobus are genera which are closely re- 

 Trechus lated, systematically, to Anophthahnus, but which have 

 eyes. 

 A large number of small beetles, which scarcely ever exceed 0.25 

 of an inch in length, and many species of which are found running 



about in the sunlight upon the sand of river banks and of the shores 

 of lakes, are included in the genus Hembidiwn in its wider sense. In 

 proportion to their size these beetles are among the quickest running 

 insects, and considerable dexterity is necessary to capture them. The 

 species of Tachys are even smaller than those of the last-mentioned 

 genus, which they i-esemble in habits. 



Morio georgim, which is black and about 0.5 of an inch long, is the 

 single representative in the United States of the tribe of insects to 

 which it belongs, of which a few species are found in most parts of the 

 world. It is found in the southern States. 



The sub-family Carabinse, which includes the larger and more beau- 

 tiful species of Carabidce, are characterized as follows : " Middle coxal 

 cavities not entirely enclosed by the sterna, the epimeron of the meso- 

 sternum reaching the coxa." The genera are more easily recognized 

 in this sub-family than they are in the preceding one, and their charac- 

 ters will be given, following, as usual, the autlioritative work for North American 

 Coleoptera, Drs. Le Conte and Horn's classification. 



In the tribe of which Scarites is the typical genus, the posterior 

 coxae do not attain the side margin of the bodj^, the anterior coxal cav- 

 ities are closed behind, the presternum does not conceal the mesoster- 

 num, the antennas arise either under a distinct frontal plate or a ridge 

 which extends backward over the eyes, the body is pedunculate, and 

 the posterior coxse are contiguous. In Scarites itself the hind angles 

 of the thorax are wanting, the elytra are without a 

 humeral carina, the maxillse ai-e slightly hooked at the 

 tip, and the basal joint of the antennse is long. S. 

 subterraneus is a very common species in New Eng- 

 land, and is from 0.7 to 1 inch in length, with large mandibles. It is 

 said to live in the burrows of Copris, a scarabteid, and probably de- 

 vours coprophagous larvas. Monhotia gloriosa, a species from southern 

 Europe, which is similar to Scarites, attains a length of over two inches. 

 Pasimachus differs from Scarites in having the hind anerles of the Fig. 494.— Pasimo- 

 thorax distinct, the elytra with a humeral carina of variable length, 

 and the maxillee very obtuse at the tip. The species, which are usually margined with 

 blue, are all North American. P. depressus is of a dull black color, without strisB or 

 punctures, and is found in the southern United States. 



Fig. 492. — Morio 

 georgifB. 



Fig. 493. — Scarites 

 subterraneus. 



