Geodephagous Coleoptera of Japan. 221 



Leistus alecto. 



L. laticollis (Mor.), Putzeys, Ann. Soc. Ent. Belg. 

 1875? 



L. piceo quoad formani haud dissimilis, sed elytris 

 versus basin minus angustatis ; L. laticolli (Moraw.) 

 affinissimus, differt solum elytris paullo longioribus et 

 postice magis dilatatis, colore obscuriori subaeneo-tincto. 

 Elongatus, gracilis, piceo-niger subaeneo-tinctus ; an- 

 tennis (articulis 1- vel 1 — 4 leviter infuscatis) partibus 

 oris tibiis et tarsia testaceo-fulvis ; capite convexo, laevi, 

 collo sulcato-constricto ; thorace minus lato, sub- 

 rotundato, lateribus postice ante angulum rectis, mar- 

 gine antice et postice plus minusve punctato ; elytris 

 elongato-ovatis ab ultra medium usque ad basin gradatim 

 angustatis sed humeris magis quam in L. piceo per- 

 spicuis, sat profunde punctulato-striatis, striis versus 

 latera et apicem evanescentibus ; prosterno medio pec- 

 toreque lateribus sparsim grosse punctatis. Long 9 — 

 9i mm., <? , ? . 



Sapporo ; Nikko. 



The tendency of the striae on the sides and the apex to 

 become more feebly impressed or to disappear altogether 

 is common to this species and to a distinct East Siberian 

 one, four examples of which I obtained from the Maack 

 collection, and which agree very well with L. laticollis, 

 Mor. 



Leistus prolongatus. 



Valde elongatus, antennis (articulis 1 — 4 infuscatis) 

 partibusque oris fulvo-testaceis, tibiis et tarsis rufo- 

 piceis, palpis maxillaribus apice intus guttula nigra; 

 capite quam in L. spinibarbi longiori, oculis minus 

 prominentibus, mandibulis maxillisque multo magis 

 elongatis, vertice valde convexo collo constricto ; thorace 

 subovato, antice modice rotundato postice gradatim 

 usque ad angulos posticos obtusos (fere rotundatos) 

 angustato, basi tantum punctato ; elytris maxime elonga- 

 tis, angustis, postice convexis, medio subparallelis, prope 

 basin gradatim angustatis, basi (apud plicam) angustis, 

 humeris nullis, punctato-striatis, interstitiis sat convexis. 

 Long. 10^- mm., $ . 



Oguma, in Higo. One example in May. 



TBANS. ENT. SOC. 1883. PART III. (AUG.) S 



