CERAMBYCIDAE. 



HI 



Lamiinae. 

 8. Dihammus acanthias Pasc. 



Monochamus acanthias Pascoe, Ann. Nat. Hist. (4), 15, p. 65, 1875 ; Haplohammus acanthias 

 Auriv., Denkschr. K. Ahad. Wiss. Wien, Math.-Naturw. KL, 89, p. 691, 1913. 



Eleven males and five females from the coast-districts of Savaii and Upolu. 

 Savaii : Fagamalo and Iuasivi, xi.1925 (Buxton and Hopkins) ; Salailua, 

 21.V.1924 (Bryan). Upolu Is. : Apia, 18.ii., 30.vi.1922, 19.iv., 18.V.1924 

 (Armstrong) ; 13.ix.1923 (Swezey and Wilder) ; vi., vii., xii.1924 ; Vailutai, 

 Lalomanu and Aleipata, lO.iv., 9.vi., xi.1924. 



My surmise (I.e., 1913) that this species has been introduced into the 

 Samoan Is. in recent times is corroborated by the localities mentioned above. 



9. Dihammus holotephrus Boisd. (?) 



Lamia holotephra Boisduval, Voy. Astrol. Ins., 2, p. 498, t. 8, fig. 3, 1835 ; Haplohammus holotephrus 

 Auriv., Denkschr. K. Akad. Wiss. Wien, Math.-Naturw. Kl, 89, p. 692, 1913. 



Eight males and eighteen females, from Upolu and Tutuila. Upolu : Apia, 

 i.-vii.l924; Malololelei, 2000 ft., 14-30.vi., 28.xi.1924; Aleipata, xi.1924. 

 Tutuila : Pago Pago, 20.ix., 18.xii. 1923 ; Amauli, 5.ix.l923 ; Fagataga, 

 29.iii.1926 (various collectors). 



As to the interpretation of Boisduval's species, see my paper quoted above. 



10. Dihammus rusticator F. 



Lamia rusticator Fabricius, Syst. Eleuth., 2, p. 294, 1801 ; Monohammus rusticator Blanch.., Voy. 

 Pole Sud Zool., 4, p. 294, t. 17, fig. 5, 1853 ; Monochamus rusticator Aulm., Fauna deutsch. 

 Kolon., 5, 3, p. 19, fig. 14, 1912 ; 5, 5, p. 20, fig. 16, 1913 ; Lamia fistulator Germ., Ins. 

 Spec. Nov., p. 478, 1824 ; Monochamus fistulator Pasc, Trans. Ent. Soc. Lond. (3), 3, p. 293, 

 1866. 



One male, one female from Upolu : Apia, xi.1925 ; Lalomanu, xi.1924. 

 One male from Tutuila : Pago Pago, 4.xi.l925, one 



This widely distributed species, not hitherto known from the Samoan Is., 

 is probably a recent introduction. 



