the CistelidfB &c. of Japan. 263 



impressed where in M. japonici and M. fiieaiUs there is a 

 conspicuous longitudinal channel, but ray examples apparently 

 are both females. 



Hah. Kashiwagi. Two examples, 23rd June, 1881. 



Synchroa crepuscula, sp. n. (PI. VIII. fig. 1.) 



Elongata, angustata, infuscata, subopaca, pubescens ; capite thorace- 

 que minute et deuse punctatis ; elj^tris distincte striatis, interstitiis 

 convexis ; antennis pedibusque obscure rufo-brunueis. 



L. 18 mill. 



Elongate, narrow, dusky or blackish brown, somewiiat 

 opaque, with short greyish pubescence ; the head finely and 

 densely punctured ; the thorax, sculptured like the head, 

 narrowest anteriorly, feebly swollen in the middle, widest at 

 the posterior angles, angles obtusely produced, depressions at 

 the base wide and shallow ; the elytra, very long and narrow, 

 distinctly striate throughout, interstices convex and finely 

 punctulate ; the antenna}, palpi, and legs dull reddish brown. 

 The third joints in all the tarsi are shorter than those of 

 S. melanotoides. 



This is the finest species of the genus known at present. 

 Hub. Sapporo and Junsai. Only five specimens. 



St/nchroa melanotoideft, sp. n. 



Elongata, elliptica, infuscata, subuitida. pubescens ; capite thoracecjue 

 parum dense punctatis ; elytris striis leviter impressis ; aateunis 

 pedibusque obscure brunneis. 



L. 10-12| mill. 



Elongate, elliptical, dusky brown, somewhat shining, with 

 somewhat long tawny pubescence ; tiie head rather densely 

 but not finely punctured^ the thorax narrowest anteriorly 

 and gradually widening to the base, posterior angles not pro- 

 duced, depressions at the base deep, somewhat triangular, 

 and not widening out like those of S. crepuncula ; the elytra, 

 striae feebly impressed, interstices punctured like the head 

 and thorax; the antennee and legs dull brown. 



This species somewhat resembles 8. iimhrina, Mels. 



Hah. Miyanoshita, Kurigahara, Sapporo, and Junsai. 

 Many specimens. 



Seri'opalpus niponicas^ sp. n. 



Elongatus, angustatus, brunneus, pubescens : capite thoraceque 

 densissime rugoso-punctulatis ; elytris distincte striatis, interstitiis 

 dense rugoso-punctulatis ; antennis pedibusque concoloribus. 



L. 9 mill. 



This species is similar in form and colour to 8. filiformis. 



18* 



