246 MR. H. W. BATES ON THE 



elytris grosse (versus basin erebre) punctatis ; antennis atro- 

 fuscis, articulis 3-11 basi griseis, arfciculo undecimo ( ? ?) prece- 

 dent! duplo minori ; pedibns nigro-fuscis griseo variis. Long. 

 7 millim. 

 Sapporo. 



Mesosella, n. gen. 



Gren. Mesosce similis, sed differt antennarum scapo apice integro 

 unguibusque subparallelis ; subfam. Niphonincd pertinet. Caput 

 inter antennas triangulariter concavum, tuberibus antenniferis 

 apice baud prominentibus. Oculi modice emarginati. Antennae 

 corjDore fere dimidio longiores, scapo quam art. tertius multo bre- 

 viori, gradatim clavato, nullomodo triquetro, creberrime punc- 

 tulato, apice extus Isevi, polito ; art. tertio sat elongate (cum 

 quarto et quinto) subtus ciliato, quarto pauUo breviori, cseteribus 

 gradatim decrescentibus. Thorax brevis, subcylindricus, supra 

 sequalis. Elytra oblongo-ovata, absque cristis et tuberculis. 

 Tibise intermedise estus integrse. Tarsi articulo unguiculari elon- 

 gate, parum robusto. 



According to Lacordaire's classification, this genus belongs to 

 tbe group or subfamily Niphonince. The species on which it is 

 founded has, however, the closest resemblance to the Mesosce, 

 and might well be taken for M. gracilior. The absence of cicatrice 

 from the scape, though its place is indicated by a smooth polished 

 area in the else closely punctured surface, is the chief distinguish- 

 ing character. The subparallel or " divergent " claws are a less 

 conclusive mark of distinction between the two groups Mesosince 

 and NiphonincB, many species of the former having claws tending 

 towards the " divergent " position. 



Mesosella simiola, n. sp. (Plate II. fig. 3.) 



Oblongo-subovata, obscure fusca, fulvo-fusco tomentosa, nigro 

 maculatim varia, elytris fascia post medium dentata (suturam 

 hand attingenti) cinereo-alba ; antennarum articulis 3-11 dimidio 

 basali testaceo ; pedibus nigris griseo parce maculatis, unguibus 

 fulvis. Long. 8 millim. 



Mkko. 



Besembles Mesosa gracilior and Praonetha leiopodina, and inter- 

 mediate in form between the two species. 



Stbea stjbeasciata, n. sp. 



Elongata, postice sat convexa ; elytris apice siugulatim rotun- 



