Genera and Species of Coleoptera. 343 



1859). It seems to be most allied to Monohammus and Dysthceta ; 

 from the former it is distinguished by the terminal antennary joint 

 not being longer than the one preceding (in tf ), as well as by differ- 

 ence of habit, while Dystha'ta, Pasc, differs from both in the form of 

 the basal joint of the antennae. 



Monohammus. 

 Serville, Ann. de Soc. Ent. de Fr. iv. p. 91. 



Sect. 1. Pedes anteriores maris elongatae. 



Monohammus Hector. 



M. fuscus, griseo-pubescens, fulvo varius; prothorace lateribus tumido, 

 tuberculo minuto instructo ; elytris fulvo irroratis, singulis macula nigra 

 pone medio. 



Hab. Ceram. 



Dark brown, covered with a fine greyish pile, varied with fulvous ; 

 head narrow, elongate, with a deeply impressed longitudinal line ex- 

 tending from the epistome to the prothorax ; eyes large ; antenna? more 

 than three times as long as the body, arising from two approximate 

 nearly erect tubercles ; lip and epistome short ; prothorax about equal 

 in length and breadth, narrowed anteriorly, swelling out considerably 

 at the side, and armed with a small but very distinct tubercle, the disk 

 with a slightly impressed longitudinal line ; scutellum rounded poste- 

 riorly, hairy, the centre glabrous ; elytra rather elongate, subtrigonate, 

 rounded at the apex, granulated at the base, indistinctly punctured, 

 sprinkled with fulvous, behind the middle a small black spot on each ; 

 body beneath dull brown ; legs elongate, especially the anterior pair, 

 which have also their tibiaa serrated internally, and armed near the 

 extremity with a short spine, the two basal j oints of the tarsi of the 

 same pair dilated at the sides. Length 17 lines. 



The above description is drawn up from a remarkably fine male, 

 with the antennae alone four and a quarter inches long. The female 

 has a smaller prothorax, nearly parallel elytra, shorter legs, and an- 

 tennae not more than half as long again as the body. It is allied to 

 M. Alcanor, Newm., bipunctatus, Schon., and fulvo -irroratus, Blount, 

 all of which are referable to M. J. Thomson's Bhamses, a genus 

 which I have not adopted, inasmuch as the single character which 

 separates it from Monohammus — the spined protibiae of the male — is 

 so graduated that in some species, jplorator, Antenor, <kc. for example, 

 it is difficult to decide if the little callus, which represents the spine, 

 is sufficient to constitute it a Bhamses. The habit, too, is just as 

 variable as in Monohammus. 



