Mr. C. 0. Waterliouse on new Coleoptera. 381 XLVIII. — Note on two Species of Lucanoid Coleoptera, allied to Cladognathus bison. By Charles O. Waterhouse. The British Museum has recently acquired an interesting series of Coleoptera from the Salomon Islands, collected by Mr. C. M. Woodford. Among them is a fine series of a Cladognathus allied to C. bison. In the Museum collection there is a good series of another species from Cape York, Torres Straits (Thursday I., Murray I., and Cornwallis I.), and New Guinea. These three species closely resemble each other in general form and colour ; but C. bison is easily dis-tinguished from the two others by its having reddish-yellow spots on all the femora and often on the sternum. The two other species are extremely alike, with nearly uniformly coloured legs ; those from the Salomon Islands, however, have the femora more castaneous than the species from Torres Straits. I am in doubt which of these two species is to be referred to C. cincius, Montr., from Woodlark I. ; but the proximity of Woodlark 1. to the Salomons, and the fact that Montrouzier states that the large males of C. ductus have five or six teeth on the inner side of the mandibles, incline me to believe that the Salomon-Islands species is the true C. cinctus. The species from Torres Straits I propose to call C. limbatus. Cladognathus limbatus^ n. sp. General form and colour of C. bison ; nearly black, with the elytra and sometimes the thorax dark pitchy brown. The larger males with the sides of the thorax yellowish (with a black spot in the middle of the yellow) ; the smallest males and the females with a reddish-yellow crescent-shaped mark at the sides. The elytra with a broad margin of yellow, as in C. bison, but narrowed at the extreme apex as it approaches the suture. Legs black. The large males have two teeth beyond the middle of the mandibles, with the apex furcate ; the smaller males have the mandibles serrate. Thorax with the posterior angles sinuate. cJ . Length (with the mandibles) 10-24 lines. ? . „ „ lH-16 „ This species difters from C. bison in having the legs uni-form black. The mandibles of the large males have much fewer teeth, and the yellow band of the elytra narrows as it reaches the suture. The large triangular tooth at the base of the mandibles appears also to be much more simple. The species from the Salomon Islands, which I believe to be the true C. cinctus, differs from C. limbatus in the males
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