Rules of Zoological Nomenclature. 181 Ahrceus cohceresy sp. n. A. bonzico eimilis, sed multo minor, fronte leviter impressa ; meta-sterno baud canaliculato. L. If miU. Circular in outline, convex, black and somewhat opaque, densely punctate, with short slightly club-shaped setae ; the head densely and coarsely punctured, with a feeble median frontal impression ; the thorax and elytra are similarly punc-tate, except that the thorax has large punctures along the basal edge, and the elytra for the posterior half are longi-tudinally rugose ; the propygidium is punctured like the disk of the thorax, but the punctuation of the pygidium is smaller, more even and clear ; the prosternum and mesosternura are somewhat irregularly punctured, the punctures varying in size ; the metasternura has an extremely fine longitudinal median line, and the punctures on the surface are more closely set than those of the mesosternum ; along the anterior edge of the first abdominal segment is a row of large punctures. This species resembles A. bonzicus, Mars., but it is about half its size. A. honzicus has a straight, shallow, but well-marked median channel down the middle of the metasternum; this character is not noticed by Marseul. It is probable both species are of stercoraceous habits, as I found A. bonzicus in great profusion in horse-dung at Otaru, on the west coast of Yezo, on the 4th August, 1880. Hab. Hongkong {J. J. Walker). Several examples. XXIV. — Report on the Eules of Zoological Nomenclature to besuhmittecl to the Fourth International Zoological Congress at Cambridge by the International Committee for Zoological Nomenclature*. 1898. Iktkodxjction. This Keport is " informal," in the sense that while the Committee has discussed the subject-matter herein contained, and has agreed to submit to the next International Zoological Congress the views expressed below, it has not yet had an opportunity to discuss in detail the exact arrangement of the various rules and recommenda-tions. In its final sessions at Cambridge the Committee will * The International Committee, which was appointed at the Leyden Meeting of the Congress in September 1895, consists of Dr. R. Blanchard of Paris, Prof. J. Victor Cams of Leipzig, Dr. F. A. Jentink of Levden, Mr. P. L. Sclater of London, and Dr. C. W. Stiles of Washington. ' The English edition of the Keport has been prepared by Dr. Stiles,
XXIV.—Report on the rules of Zoological Nomenclature to be submitted to the fourth International Zoological Congress at Cambridge by the International Committee for Zoological Nomenclature
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