LeConte.] '^24: [Jan. 5, 



slermis, wiiicli arc supposed to be cosmopolitan, our genera arc not found 

 on the other continent. Tiic se which have been previously described, 

 mostly extend to the southern tropics of America, and of the eight new 

 genera, nothing can yet bo said. As a tribe the distribution is general. 



VI, iv, 10. Copturus abounds in tropical America, and is feebly repre- 

 sented in tropical Asia. Piazurus is entirely American. As a tribe the 

 distributicm is general. 



VI, iv, 17. Tachygonus is exclusively American ; one species is Brazil- 

 ian. The only representative in foreign parts is Dinorhopala Pascoe, in 

 Burmah. 



VI, iv, 18. "With closer comparison the number of species common to 

 Europe and the United States may probably be increased. There is but 

 one, Ceutorhi/nc/niH rapm. which may have been introduced. 



VI, iv, U). Until a new study lias been made of Baris, Centrinus, and 

 allied genera, any remarks upon geographical distribution would be pre- 

 mature. 



VI, V. Balaninus, as recorded in the Munich Catalogue is cosmopoll'an ; 

 a better study of the foreign species is nccessarj', in order to know if they 

 possess the essential character of the subfamily ; the vertical movement 

 of the mandibles. 



VII, i. Our two genera extend into tropical America. 



VII, ii. CyJan formicariu» has i)robal)ly been imported from Asia, though 

 ConvoUulus batata, upon which it depredates, is considered an American 

 plant. 



VITI, i, 1. Rhynchophorus is cosmopolitan, but confined to tropical and 

 subtropical regions, being parasitic upon palm trees. Sphenophorus is 

 cosmopolitan. Calandra has deen distributed in cereals until it is now 

 difficult to determine whence the species have emigrated. 



VIII, iii, 1. Dryoplithorus seems to be cosmopolitan, the other genera are 

 local, so far as known at present. 



VIII, iii, 2. Cossonus and Mesites are common to both continents ; Cau- 

 lopliilus is found in Madera, and Ilimatium in India. Stenomimus occurs 

 in Brazil, and Ilomaloxenus in San Domingo. 



VIII, iii, 3. Stenoscelis is almost cosmopolitan; Rhyncolus is found 

 throughout the nortliern hemisphere, and in Brazil ; Phlwophagus, Amau- 

 rorhiiuis, and Ilexarlhnini in the Atlantic Island and Europe ; the last 

 named also occurs in Japan. 



IX, i. Platy]His is cosmopolitan. 



IX, ii, 1. Pityo]ihthorus, Xylotcrus, Xyleborus. Dr)'oca?tes, Cryphalus, 

 and Tomicus, are common to both continents. 



• IX, ii, 2. Scolytus is widely dillused on both conlincnts. 



X, 1. Troi)ideres is the only genus occurring on the other continent. 

 X, 2. Anthribusand Brachytarsus are represented in Europe. 



X, :!. C'iioragus also occurs in Europe. Arieocerus is cosmopolitan, and 

 distributed in ariicles of commerce. 



X, 4. Xenorchestes has been found only in Madeira. 



XI. Apion is cosmopolitan. 



