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Show 158 ON COLEOPTERA FROM DUKE-OF-YORK ISLAND. [Feb. 20, dentate as in B. Wallacei. As to the general form of body, legs, and antennae there is no conspicuous difference. The species is allied also to B. una of White (New Hebrides), described from a 2 example ; but in this latter the clothing of the elytra is quite unicolorous. One example. BATOCERA NEBULOSA, n. sp. (Plate XXIV. fig. 1.) B. gerstaeckeri (Thorns.) affinissima ; differt elytris fere eequaliter cinereo irrorato-nebulosis anguloque exteriore truncaturce apicalis nullo modo spinoso. Elongata, fusca, elytris subceneo-fuscis nitidis, tomento cinereo passim subplagiatim irroratis, basi dense tuberculatis; thorace immaculato; corpore subtus lateraliter albo vittato. 8. Antennis corpore duplo longioribus, rugosissimis: articulis 3-6. subtus denticulato-asperatis, apice haud spinosis: tarsorum anticorum articulis 1. et 2. extus spiniformiter productis. A species so closely resembling B. gerstaeckeri from Sula, that I should not have ventured to treat it as distinct, had not the many dozens of specimens compared showed a perfect constancy in the few points of difference. Most of the specimens are more or less abraded ; but in the many which have the pubescence intact, it is much more equally distributed over the elytra than in B. gerstaeckeri, and the subregular bare shining patches of the ground-colour of that species do not exist. In the abraded specimens the derm does not possess the glossiness which distinguishes B. gerstaeckeri. A constant structural peculiarity is the untoothed outer angle of the elytral truncature. The spinous prolongation of the anterior tarsi of the 8 is always seen on the first joint, but on the second only in large well-developed individuals. PERIAPTODES LUCTATOR, Pascoe, Trans. Ent. Soc. iii. ser. 3, p. 284. Several examples. The species was originally taken by Wallace in Ceram. GNOMA GIRAFFA. Cerambyxgiraffa, Schreibers, Linn. Trans. 1801, vi. p. 198, pl. xxi. f. 8. Two examples, 8 • Much more robust in form than the same species from Ceram and Amboyna; but the elytra are granulated and punctured in the same way, and not smooth posteriorly as in the closely allied New-Guinea species Gn. ctenostomdides. ECZEMOTES GUTTULATA, n. sp. (Plate XXV. fig. 4.) Oblonga, convexa, atro-fusca, tenuiter brunneo-pubescens, supra omnino subconfertim nitido-granulata; elytris guttulis ochraceis sparsim conspersis, apice brevissime truncatis; subtus nigro-nitida, capite et sternis lateribus, tibiis autem extus fulvo- |