52 Mr. Newman's Characters of 



elevated interspaces is whiter and is interrupted by lengthened 

 spots of an intense velvety black. Beneath, every part of the in- 

 sect is covered with a dense concolorous pile of a testaceous brown 

 colour. 



The species of the very natural division of Elater, which has 

 received the name of Alaus, are of uniform habit and uniformly 

 of large size : this beautiful species, the only Australian one which 

 I have happened to meet with, is no exception, and I have been less 

 particular in details of form and sculpture, because they present no 

 salient differences. Mr. Gibbon found a single specimen in a 

 saw-pit, and I have great pleasure in associating it with the name 

 of one who has done so much for the Entomology of Australia, 

 and who has with such liberality presented the rarities of his col- 

 lection to our national Museum. 



Sp. 2. Elater (^Dorcostoma) Jansoni, Newman. 



Obesiis, depressus, subcomplanatvs, fuscus, opacus, pilis sparsis 

 brevibus adprcssis pynlUdioribus omnino tectus ; captte mediocri, 

 in prothorace recepto, prothorace duj)lo angustiori ; labro por- 

 recto acuto ; mondibulis exsertis porrectis, extus hirsutis, pro- 

 minentibus, dente mediano valido interno armatis, apicc uncinatis, 

 acuiissimis ; ocidis aterrimts glabris, provi'muUs ; prothorace 

 lato ant'ice sinuato, laterlbus ddatatis, ant'ice siibrotundalis pos- 

 t'lce subexcavatis, anguliti post'tcis productis, dentevi magnum 

 truncatum utr'msque lateris fingentibus ; elytris dilatatis mar- 

 ginatis, costis jmulhdam at mainfesto reflexis puncto-striatis, 

 striis 9. (Corp. long. 1 unc. ; elytrorum lab. max. •42.') 

 unc.) 



Brown, unicolorous without gloss, beset with short scattered 

 appressed hairs. Antennae about equal in length to the prothorax, 

 11 -jointed, flattened, slightly serrated; labrum somewhat trigo- 

 nate, porrected, acute in front ; mandibles very strong, porrected, 

 prominent, sliglitly liooked and very acute at the tips, and having 

 one large strong very acute tooth, situate about the middle of the 

 internal margin ; prothorax broad, the longitudinal and transverse 

 breadth nearly equal, its anterior margin excavated to receive the 

 head, and the excavation slightly sinuated, the lateral margins 

 dilated, anteriorly rounded, posteriorly somewhat excavated, each 

 posterior angle produced into a large blunt tooth ; elytra broad, 

 somewhat depressed, the costal margin dilated and somewhat re- 

 flexed, the dilation originating below the slioulder ; the disk im- 

 pressed with nine well-marked punctate striae, the interstices 



1 



