LONGHCOSir BEETLES OF JAPAN. 239 



MoNOHAMMirS PAEDALINTJS, H. Sp. 



Pro hoc genere parvus et gracilis; antenuis tenuibus, articulis 

 3-5 subtus sparse ciliatis tibiisque intermediis medio extus baud 

 tuberculatis. Elongatus, fuscus, supra pallidus vel fulvo-fuscus, 

 maculis numerosissimis rotundatis atro-fuscis, plerumque separatis 

 conspersis, post medium in maculam utrinque majorem congestis. 

 Capite et oculis sicut in Monohammis typicis, sed tuberibus anten- 

 niferis apice baud acutis ; antenuis ( J ) corpore plusquam duplo 

 longioribus, obscure rufis, articulis a tertio basi griseo-testaceis ; 

 thoracis spinis lateralibus conicis acutis ; elytris relative valde 

 elongatis, post medium paullulum ampliatis delude usque ad 

 apicem curratim angustatis, apice singulatim rotundatis. Long. 

 12 millim. S • 



Tuyama. 



The slender antennae and the markings give this species the 

 appearance of an elongate Leiopus ) but the perfectly margined 

 cicatrice and the shape of the scape, the thorax, and other cha- 

 racters are those of Monohammus. The slightly rounded sides of 

 the elytra are seen in several small species of true Monohammus 

 from Assam and Siam, and the scantily ciliated basal joints of the 

 antennae it partakes with M. Fredericus (White). The only 

 character which may be of generic importance is the total absence 

 of tubercle and notch preceding the sinuation of the middle 

 tibiae. 



Haplohammfs, nov. gen. 



A Monohammo differt scapi cicatrice laeviori, minus acute et 

 integriter marginato. A Dihammo (Thorns.) diifert tibiis et tarsis 

 anticis c? normalibus. 



A genus proposed for a numerous series of Indo-Malayan and 

 Australasian Monohammi which, differ from the typical species by 

 the smoother antennal scape and the less abruptly truncated and 

 smoother cicatrice, the bordering rim of which is much less com- 

 plete. The series of species is readily distinguishable from the 

 true Monohammi by their more uniform colours and " facies." 

 Dihammus, Thorns., an equally numerous Eastern group, pre- 

 sents a similar form of cicatrice, but is amply distinguished 

 by the prolonged external apices of joints 1 and 2 of the 

 anterior tarsi of the male, and the dentiform projection which 

 surmounts the groove of the anterior tibiae in the same 

 sex. 



17* 



