206 COLEOPTERA 



CHAP. 



Carabids of the genus ACJIKS, that pass a large part of their 

 lives under stones below high-water mark (emerging only when 

 the tide uncovers them), on the borders of the English Channel 

 and elsewhere, are very closely allied to these blind Insects, and 

 have themselves only very small eyes, which, moreover, according 

 to Hammond and Miall, are covered in larger part by a peculiar 

 shield. 1 A few Carabidae, of the genera 6V///>/V.s and Orthogonius, 

 are believed to live in the nests of Termites. Savage found the 

 larva of G. sculptilis in the nests of Tcrmes IcHicosus; it has 

 been described by Horn, and is said to bear so great a resem- 

 blance to young queens of the Termites as to have been mistaken 

 for them. 2 Mr. Haviland found Rhopalomelus angusticoUis in 

 Termites' nests in South Africa. Peringuey states that it emits 

 a very strong and disagreeable odour. It is probable that it 

 preys on the Termites, and this also is believed to be the habit 

 of the Ceylonese Hdluodes taprobanae. Some species of the 

 Mediterranean genus Siagona stridulate by means of a file on 

 the under surface of the prothorax, rubbed by a striate area, 

 adapted in form, on the anterior femora. 



A valuable memoir on the classification of this important 

 family is due to the late Dr. (I. H. Horn ; 3 he arranges Carabidae 

 in three sub-families ; we think it necessary to add a fourth for 



1. Middle coxal cavities enclosed externally by the junction of the nieso- and 



nieta-sternum ; neither epimeron nor episternum attaining tin- 



cavity. 

 Head beneath, "with a deep groove on each side near the eye for 



the reception of the antennae or a part thereof. 



Sub-fam. 3. PSEUDOMORPHIDES. 

 Head without antennal grooves. Sub-fam. 2. HARPALIDES. 



2. Middle coxal cavities attained on the outside by the tips of the episterna 



and epimera. Sub-fam. 4. MORMOLYCIDES. 



3. Middle coxal cavities attained on the outside by the tips of the epinirm, 



but not by those of the episterna. Sub-fain. 1. CARABIDES. 



These four sub-families are of extremely different extent and 

 nature. The Harpalides are the dominant forms, and include 

 upwards of 10,000 known species; while the various tribes 

 into which the sub-family is divided include, as a rule, each many 



i/ of aquatic Insects, 1895, p. 376. 

 2 Tr. Anur. cnt. Soc. xv. 1888, p. 18. 

 <>j>. cit. v. 1881, p. 91 ; cf. Sharp, Tr. cut. Soc. London, 1S82, p. 61. 



