100 Christmas Island. 



Family ELATERID^. 



36. Tetrigus murrayi, Waterli., sp.n. 



Elongatus, parallelus, brunneus, f ulvo - pubescens. Thorace 

 creberrime pimctato ; elytris striatis, striis sut fortiter punctatis, 

 interstitiis crebre punctatis. 



Long. 22 mm. ^ . " 



The thorax has the punctuation very close, and considerably 

 stronger than in T. parryi or flahellakis, and the pubescence is 

 rather coarser. The elytra are striated, the punctures in the striae 

 are much stronger than in T. flaheUatus about the same as in 

 -T. lewisi, but closer together ; the dorsal striae are nearly as 

 strongly marked as the lateral ones. The interstices are closely 

 and more strongly punctured than in T. flaheUatus, and there is 

 a slight tendency of the punctures to be asperate. The apex of 

 each elytron is angular, the angle nearly a right angle, not at the 

 suture (as in T. parryi) but between the second and third striae. 

 The prostemum is rather closely and very strongly punctured, but 

 there is a smooth median line posteriorly. The apex of the abdomen 

 is arcuately rounded, not emarginate. 



37. Anchastus discoidalis, Waterh., sp.n. 



Sordide testaceus ; capitis vertice, thoracis disco, elytrisque 

 (basi excepto) fuscis. 



Long. 6-6 "5 mm. 



This insect has much the appearance of Dolopius marginattis, but 

 it is rather more elongate, the thorax is rather longer and more 

 narrowed in front, and the elytra are a little narrower and more 

 acuminate. The clypeal carina is very sharp and prominent. The 

 antennae have the third joint distinctly longer than the second, 

 a little shorter that the fourth. The thorax is shining, moderately 

 strongly punctured, the punctures distinctly separated on the disk, 

 close together at the sides ; the posterior angles arc prolonged and 

 very acute, the inner carina is fine, and not very sharply defined, 

 . so that it is only visible in certain positions. The base is 

 testaceous, the sides and anterior angles light brownish-testaceous, 

 the disk dark brown, with a trace of a lighter median line. 

 The elytra are strongly striated, the striae closely and strongly 

 punctured, the interstices slightly convex, rather closely, finely, 

 but distinctly asperate-punctate ; the dorsal surface is dark brown, 

 the extreme base testaceous, the sides light brown, the presternum 

 is very dark brown, shining ; the under flanks of the pronotum 

 testaceous, with a broad dark-brown stripe. The rest of the under- 

 side is rather dark, the segments bordered with lighter colour. 



Two examples in rotting wood. A single specimen was also 

 taken by Mr. J. J. Lister. 



