290 Geodephagous Coleoptera of Japan. 



Belongs to Penetretus by the glabrous upper surface of 

 the tarsi, but in form and facies more resembling Delto- 

 merus ; the facies is something between Patrobus exca- 

 vatus and Deltomerus tatricus. 



Penetretus dilatatus. 



P. ambiguo brevior et latior ; piceo-niger, antennis 

 partibus oris pedibusque picescenti-rufis ; capite^ fere 

 laBvi ; thorace late cordato, antice valde rotundato, pos- 

 tice sinuatim angustato, angulis posticis acutissimis, 

 basi et lateribus punctatis ; elytris latius ovatis, sub- 

 punctulato-striatis. Long. 8^ mm. 



Shimidzu-toge. One example (male) only. 



Stomonaxus Iceviventris. 



S. striatocolli similis sed angustior, elytris oblongis, 

 subtus toto corpore laevissimo ; piceo-niger, thoracis 

 lateribus postice et angulis rectis ; elytris lsevi-sulcatis, 

 apice juxta suturam vix rufescenti ; antennis, partibus 

 oris, pedibus, segmentisque 3 ultimis ventralibus, piceo- 

 fulvis. Long. 5j mm. 



Hakone ; many examples in decaying beeches. Head 

 and thorax sometimes rusty red. 



Explanation of Plate XIII. 



Fig. 1. Cicindela ovijjennis. 



2. Lachnoderma asyerum. 



3. Carabus grandis. 



4. Cojitodera Japonica. 



5. Lioptera erotyloides. 



6. Trigonodactyla insignis. 



7. Broscosoma elegans. 



