264 Mr. G. Lewis on 



Mars., but the elytra are -vvholly and distinct striate like those 

 of the European species S. harhatus, Schall. 6'. nrponiciis 

 differs markedly, however, from the last-named in the elytrai 

 interstices beinc: much more rugose and more convex. 

 Hah. Fukushima. One example, 28th July, 1881. 



MiKADONlUS, gen. nov. 



This genus should be placed close to Serropalpus ; the most 

 conspicuous differences consist in the prominent eyes, form of 

 the thorax, and in the shortness of the third joint of the pos- 

 terior tarsus. Body elongate, parallel laterally; head scarcely 

 as wide as the anterior part of the thorax ; eyes prominent, 

 finely granulate ; maxillary palpi, last joint cultriform and 

 large, other joints triangular, enlarged on the inner edge ; 

 antennae filiform, long, and slender, first joint stoutest, second 

 much less robust and about half the length, third as long as 

 the basal joint, 4, G, 7 equal, fifth shorter than the fourth, 

 8-11 equal and rather longer than the seventh ; thorax 

 widest behind, narrowest in front ; scutellum somewhat 

 square; legs elongate; tibife with two strong and lengthy 

 spurs at the tarsal end; tarsi, the fourth joints of anterior and 

 intermediate pairs short and coequal with those of the third 

 joints of the posterior pair. 



Mikadonius gracilis^ sp. n. (PL VIII. fig. 2, ^ .) 



Elongatus, angustatus. griseo-pubcscens, vix nitidus, capite thoraceque 

 densissime puiictatis ; elytris in colore variabilibus ; antennis 

 pedibusque testa eels. 



L. l-\2 mill. 6 , 'J-13 mill. $ . 



Elongate, narrow, parallel at the sides, with grey or tawny 

 pubescence ; the head and thorax very closely punctured, the 

 latter narrowest anteriorly, slightly swollen about the middle, 

 widest behind ; the elytrai sculpture finer and less deep than 

 tiiat of the head and thorax. The sexes differ in colour. Male : 

 mouth-organs, head (except a wide black band between the 

 eyes), undersides of basal joints of the antennae, legs, under- 

 side of the thorax, mesosternum, and first segment of abdomen 

 (partly) testaceous; metasternum and apical joints of the 

 abdomen blackish brown ; elytra infuscate on the margins, 

 with a pale longitudinal vitta as shown in the figure. Female : 

 mouth-organs, apical joints of antennas somewhat vaguely, 

 tibiae, and tarsi testaceous ; elytra with a short palish vitta in 

 the middle of the wing-case, but close to the base, and a 

 longer not well-defined second vitta, which commences near 

 the humeral angle and continues down nearly to the apex, 



