genera and species of Malacoderm Coleoptera. 399 



interesting is that the males differ from the females in 

 having the intermediate tarsi with only the anterior 

 claw thus split. This is analogous to what occurs in 

 the genus Photuris, and might not of itself be considered 

 of generic value ; the antennae, however, differ as much 

 from those of Macrolycus as in other genera founded by 

 Mr. Waterhouse on that character. 



Mesolycus puniceus, n. s. (PL XVII. , figs. 3 — 3 b). 



Niger, prothorace pube ferrugineo brevi parce vestito, 

 elytris puniceis dense sed breviter pubescentibus, obso- 

 lete et indistincte punctatis ; sutura, margine et lineis 

 tribus elevatis, interiore obsoletiori, ante apicem abbre- 

 viata. Long. 8 — 10 mm., $ . ? . 



Mas. Antennis quam feminae, paullo longioribus, 

 segmento sexto late et profunde exciso. 



Nara ; Junsai ; Nikko. 



Head with a short blunt rostrum ; apical joint of the 

 maxillary palpi very little widened, but subtruncate ; 

 1st and 2nd joints of the antennae pale on the inner 

 side, their length about two-thirds of the body's length 

 in the male. Thorax longer than wide, hardly differing 

 in the sexes ; the carina extending half the length of 

 the disk, and towards the base ending in a flat elevation ; 

 the base widely, not deeply, transversely impressed. 

 The head is a little more exposed in the male, owing to 

 the thorax being a little smaller in that sex. The elytra 

 are very similar in colour and structure to those of 

 M. purpureas, but are deeper and more obscure in tint. 

 They are nearly parallel in the male; in the female 

 they widen a little after the middle ; the suture is 

 faintly sinuous, dehiscent after one-third, and narrowly 

 black. 



A considerable series of specimens, and in two instances 

 the sexes united, were found by Mr. Lewis. 



Metriorhynchus geometricus. 

 Eros geometricus, Kiesenw., Berl. Ent. Zeits., 1874, 



P. 256. 

 Ccenia Bourgeoisi, Harold, Stet. Ent. Zeit., xl., p. 333, 



1879, ? . 

 Metriorhynchus id., Bourg., Bull. Soc. Ent. Fr., (5), 



x., p. 149, $ . 

 Kashiwagi ; Nara ; Fukushima ; Junsai. 



