. A contribution towards the revision of the Passalidae of the world. Passalidae. 1918.] F. If. (Jravelv: I'assalidae oj tin- World. lOo Labienus ptoxoides, n. sp. 1<V- XIV, 3 and XV. 2. Two spoiimons, oue irom ^iiidai and the other from Mt. Arfak, both in New (hiinea. Length 44-46 mm. This . allied to L. gracilis and L. ptox. The antennae resemhle those of L. ])(ot, the first two lamellae being (luito short and the remaining four very lont;. The secondary scars of tlic mentiim are straight, and extend to the margin. The head closely. 3. I'Ki. .\V. Lahieiiiix ayiii. :


. A contribution towards the revision of the Passalidae of the world. Passalidae. 1918.] F. If. (Jravelv: I'assalidae oj tin- World. lOo Labienus ptoxoides, n. sp. 1<V- XIV, 3 and XV. 2. Two spoiimons, oue irom ^iiidai and the other from Mt. Arfak, both in New (hiinea. Length 44-46 mm. This . allied to L. gracilis and L. ptox. The antennae resemhle those of L. ])(ot, the first two lamellae being (luito short and the remaining four very lont;. The secondary scars of tlic mentiim are straight, and extend to the margin. The head closely. 3. I'Ki. .\V. Lahieiiiix ayiii. : iiu'iitum :< S. 1. K. iinieiiiiali.^. {\y. 2. L. dravcly. 'â i. L. Kaiip. that of both L. giricilis and L. ptox, especially the latter. The pronotum resembles that of L. ptox, the scar,s being more densely hairy and punctured than in L. ffmcilis. In all other respects the present insect resembles both species. Labienus ptox. Kaup. Fis. XV. :',. Erincnemix Kaup. 18()8r;. p. ";). Labienus plox. Kaup, 1871, p. 'W. Numerous specimens from New CJuinea (Stephansort, Bongu, ^lilne Bay and Rood Islands), Aru (Ureiuning and Wamma Dobbo) and Waigeu. Also one said to come from Borneo and three from Sumatra. Length 4S-58 mm. This .species differs from the last only in its larger size and in having the .scars on the mentum strongly arched instead of straight. Labienus compergus (Boisduval). Fi<;. XIV. 4; pi. 1. l';(iliis compergus, BoLsduval, ;). |)j). 'it 1-2 Hi I'lllejus eonrpergus, Kaup, 1871, p. 3(i. Several specimens from New Guinea (Milne Bay : Stephansort, Astrolalie Bay : .Vndai ; Kapaur ; aiul Hattam, Arfak) and one from Waigeu. Length S2-j:,6 mm. The antennae resemble those of the majority of .species belonging to the gemis. Tiu^ right outer tubercle is more or less distinctly double. The left outer tubercle may be similar, or may be composed of three more or less distinct The prono


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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1910, bookyear1918