382 Dr. D. Sharp on 



excision are not prolonged into laciniaB, and there is only an 

 extremely short lateral tooth on each side ; the posterior part 

 of the preceding plate has in the middle behind a narrow 

 deep depression, the anterior part of which is furnished with 

 coarse granules. In the female the last dorsal plate is 

 divided into three lobes by two incisions, but the lobes are 

 not separated from one another and the last ventral plate is 

 nearly simple, it being scarcely produced in the middle ; but 

 its hind margin is for a considerable breadth finely ciliate. 



Though very similar to T. trifidus and T. hidens this 

 species is very distinct ; it will, apart from the sexual cha- 

 racters, be easily recognized by the entirely black thorax and 

 the more distant pubescence of the hind body. Only two 

 individuals have been found. 



Hakone and Kiga. 



TacMnus nigriuus^ n. sp. 



Niger, Bubnitidus ; antennarum basi rufo, pedibus piceo-rufia ; capite, 

 thoracc elytrisque subtiliter punctulatis, minus subtihter strigu- 

 losis ; abdomine dense subtiliter punctato. 



Long. 7 millim. 



Antennae short and stout, four basal joints red, the others 

 dark, third joint only a little longer than the second, tenth 

 a good deal broader than long ; palpi red. Thorax and elytra 

 with their punctuation fine, but the reticulate strigulosity 

 rather coarser and more evident than usual. Legs short and 

 rather stout. 



In the male the last dorsal plate is but little produced in 

 the middle, and is divided in the middle by a short angular 

 notch ; the lateral teeth are quite short and extend about as 

 far back as the middle notch ; the last ventral plate is very 

 deeply divided and the sides are prolonged into lacinias, which 

 are much curved downwards ; the preceding plate has the 

 hind margin broadly emarginate in the middle and the hind 

 margin of the emargination set with a narrow band of asperi- 

 ties. In the female the last dorsal plate is quadrispinose, 

 the two middle teeth are rather slender and are widely sepa- 

 rated by a deep and rounded notch, the lateral teeth are very 

 elongate and reach slightly further back than do the middle 

 ones ; the last ventral plate is sexdentate, the intermediate 

 and external teeth being of about equal length and longer 

 than the middle teeth, the latter, however, projecting rather 

 farther backwards. 



Kiga and Miyanoshita, but only two specimens. The 



