Mr. C. O. Waterhouse on new Coleoptera. 383 



interstices convex, especially the third and fifth ; with nume- 

 rous minute black dots, those near the base a little more con- 

 spicuous. 



Hah. Aneiteum (J. Brenchley). 



In the British Museum there is a specimen found in 

 Santa Anna, in the Solomon Islands, by Dr. Guppy, which 

 appears to be referable to this species, but which differs in 

 having a slight bluish tint on the suture of the elytra, and on 

 the base of the elytra there are numerous small, transverse, 

 shining, raised spots. Probably these differences are due to 

 the specimen being slightly rubbed and in less good condition 

 than the type. 



Prionidse. 



Xixuihrus costatus, n. sp. 



Fusco-piceus, sordide flavo-pnbescens ; thorace transverso, lateribus 

 crenulatis parallelis, angulis auticis late rotundatis, disco tuber- 

 culis nonnullis ornato ; siugulo elytro costis quatuor instructo, 

 costa tcrtia brevi, intcrstitio quarto tertio multo angustiori ; pedi- 

 bus rugosis vix spinosis. tf . 



Long. 35 lin. 



Antennae reaching to the apex of the elytra, nearly black 

 at the base, pitchy red beyond the third joint. The first joint 

 12 millim. long, subparallel, closely and very rugosely punc- 

 tured ; the third and following joints beset with very short 

 acute tubercles ; the eleventh joint longitudinally grooved. 

 Thorax closely and finely rugose and finely punctured, with 

 some shallow larger punctures intermixed. On the disk there 

 are some slightly raised smooth lines, which together form 

 the letter M, and on each there is an oblique interrupted raised 

 line. The irregular teeth on the sides are very short and 

 rather blunt. The first and second costse of the elytra are 

 very strong, thicker in the middle than at the apex ; the 

 third is very short and much finer, and is much closer to the 

 fourth than to the second. The reflexed margin is rather 

 broad when compared with that in allied species. The legs 

 are long ; the anterior femora and tibiae are very rough, closely 

 beset with short tubercles, those on the underside of the tibite 

 acute. The intermediate and posterior femora are compara- 

 tively smooth, with a series of scarcely noticeable acute spines 

 beneath ; the tibise are longitudinally rugose, with some acute 

 tubercles on the inner side, but not spinose ; third joint of 

 the tarsi very broad, the fulvous fringe on the margins of the 

 anterior tarsi long. 



Ilab. Santa Anna, Solomon Is. (Dr. Gapjty). 



