90 LUCANID^. 



Butli liis descriptions iipply to a spccinicu in the Hope collection, 

 except that the length is given as 21 lines (breadth 6| lines) 

 in the first and 22 lines (breadth 7| lines) in the second. 

 Hope's label records " curvidens, Hope. Assam. 8. Jones," but 

 the measurement he gives for dehaani fits the specimen more 

 exactly than that given for curvidens. In the ' Catalogue of 

 Lucanoid Coleoptera,' Westwood has rei^rodueed the (inac- 

 curate) measurements given for curvidens but he described 

 another and smaller specimen, only 17 lines long, as dehaani. 

 The elytra, described as smooth in the original type, are 

 striate in Westwood's specimen. Hope's red label, bearing 

 the name dehaani, has been placed by mistake upon a female 

 specimen and this apparently deceived both Westwood and 

 Boileau. The latter referred to this female as the type of 

 the species, but Hope knew only the male. The specimens 

 all belong to the same species. 



29. Dorcus rudis. (Plate XII, fig. 20.) 



Cladognathus rudis Westw.,* Trans. Ent. Soc. 1864, p. 35, pi. U. 



fig. 5. 

 Dorcus rudis Boil., T.E.S. 1913, p. 254. 

 Prosopoccelus sulcatipennis Houlb.,* Insecta, v, 1915, p. 51. 



2. Black, shining, with the lower surface deep red. Rather 

 narrowly elongate, convex, with slender legs. The head is 

 closely rugose, with a pair of minute tubercles placed trans- 

 versely between the eyes. The canthus is narrow^ extending 

 beyond the middle of the eye, and not prominent at the end. 

 The pronotum has a very irregular double series of punctures 

 along the middle line and the sides are very broadly and 

 closely punctured. The short interval between the median and 

 lateral group.-; of punctures bears very fine scattered punctures . 

 The lateral margins are gently rounded to well beyond the 

 middle, where tiiey are rather sharply angulate, and from 

 there strongly excised to the strongly marked hind angles. 

 The elytra have each five shining costs?, placed wide apart, 

 and diminishing in width outwards from the sutural one, 

 wliich alone extends to the apex. The fourth costa arises 

 at the shoulder. The space between the first and second 

 costse is deeply striate, leaving two narrow, shining intervals. 

 The remaining interspaces are less deeply striate and the 

 intervals are rugose. The ai)ices are very finelj' and closely 

 rugose. The mentvm is coarsely rugose. The prostermi^n is 

 narrowly com])ressed and rather sharply produced behind. 

 The sides of the metasternum are rugosely j)unctured and 

 clotiied with fine yellow hair. The abdomen bears scattered 

 ])unctures, except upon the last sternite, which is closely 

 punctured. The front tibia is rather narrow, sharply forked 

 at l\u' end, ;ind has three sharj) lateral teeth. 



