504 ELEMENTS OF BRITISH ENTOMOLOGY. 



The first subdivision, Adephagi, forms two tribes, the Ge- 

 odephaga and the Hydradephaga ; the first of these consists 

 of two races, 1st, the Eupterina (comprising the single family 

 Cicindelidce), and 2nd, the Euti'echina (given as the nomen- 

 clature of Kirby and Spence 1 ), composed of six families, 

 Brachinidce, Scaritidae, Harpalidce (divided into six minor 

 groups, Harpalinii Pcecilini, Amarini, Anchomenini, Trichi- 

 ni, and Licinini), Carabidce, Elaphridce, and Bembidiidce. — 

 The Hydradephaga in like manner consist of two races, 1st, 

 the Eunechina, composed of the single family Dytiscidce, di- 

 vided, after Erichson, into two subfamilies, Haliplites (com- 

 posed of two groups, Haliplini Erichs., and Pelobini, Erichs.), 

 and Dytiscites (formed of three groups, Hydroporini, Er., 

 Colymbetini, Er., and Dytiscini, Er.), and 2nd, the Gy rone- 

 china, composed of the single family Gyrinus. 



The second subdivision, Brachelytra, comprises seven 

 families, Omalida, Oxytelida, Stenidce, Staphylinidai , Ta- 

 chinida, Aleocharidce, Pselaphidce. 



The third subdivision, Helocera, comprises three tribes; 

 1, Clavicornes, composed of the fourteen families, Scydmceni- 

 d<e, Agathidiidae, Scaphidiida, Cholevidae, Sphceritidce, Ne- 

 crophoridcB (given as that of Shuckard, but first proposed by 

 Kirby, in the i Fauna Boreali-Americana'), Silphidce, Nitidu- 

 lidce, Engidce, Dermestidce, Byrrhidm, Heteroceridce, Parni- 

 d<B and Elmidae ; 2nd, the Palpicornes, composed of four 

 families, Spercheida, Helophorida, Hydrophilida, and Sphce- 

 ridiidce; 3rd, the Fracticornes, consisting of the single family 

 Histerida. 



The fourth subdivision, Petalocera, is composed of two 

 tribes ; 1st, the Pectinicomes (or family Lucanidce), and 2nd, 

 the Lamellicornes, forming two races, Saprophaga, consisting 

 of the four families, Geotrupidce, Scarabaeidce, Aphodiid<B y 

 and Trogida ; 2nd, the Thalerophaga, composed of two fa- 

 milies, Melolonthidce and Cetoniidce. 



In placing the Brachelytra immediately after the aquatic 

 beetles, a situation not assigned to them by English writers, 

 our author has followed the views of Latreille, and Kirby (in 

 the i Fauna Boreali-Americana'). He has, however, given 

 no reasons for such an opinion, and he even objects (p. 118) 

 to the affinity suggested by Dr. Heer between the larvae of 

 the Staphylini and Dytisci. Of all the recent arrangements 

 relative to the location of the Brachelytra, that suggested by 



1 Kirby and Spence (Introd. to Entomol. vol. iv. p. 392) employ the name 

 Eupodina for the whole of the Linnaean Carabi ; Mr. Kirby, in the Fauna 

 Boreali-Americana, uses the word Eutrecha for part only of the Linnaean 

 Carabi. These authors have not employed the name Eutrechina. 



