COLEOPTERA : CLASSIFICATION. 345 



b. [Subaquatic, or aquatic species]. 



1. Acanthopodes (Heteroceridce}. 



2. Macrodactyles (Elmidce). 



E. Palpicornes. 



a. Hydrophiliens (Hydrophilidce and Helophoridce). 



b. Sphaeridiotes (Sphceridiida). 



F. Lamellicornes. 



a. Scarabseides (genus Scarab&us, Linn., chafers). 



b. Lucanides (genus Lucanus, Linn., stag-beetles). 



2. HETEROMERA. 



A. Melasoma. 



a. Pimeliares (Pimeliidce). 



b. Blapsides (Blapsidee, darkling beetles). 



c. Tenebrionites(Tene6nowic?,meal-wormbeetles,&c.) 



B. Taxicornes. 



a. Diaperiales (Diaperidte). 



b. Cossyphenes (Cossyphidce). 



C. Stenelytres. 



a. Helopiens (Helopida). 



b. Cistelides (Cistelida;). 



c. Serropalpides (Serropalpidce). 



d. (Edemerites ((Edemeridce). 



e. Rhynchostomes (Salpingidce). 



D. Trachelides. 



a. Lagriaires (Lagriidce). 



b. Pyrochroides (Pyrochroidai). 



c. Mordellones (Mordellidce). 



d. Anthicides (Notoxidce). 



e. Horiales (Horiidce). 



f. Cantharides (Cantharida, blister- and oil-beetles). 



3. TETRAMERA. 



A. Rhynchophores (Bruchidce and Curculionidce, weevils). 



B. Xylophaga (Scolytidce, Paussidce, Bostrichida, 



Cucujida). 



