On a new Species of Hylecoetus/rom Japan. G5 



IX. — On a new Species o/"Hylecoetus ( Lymexylonidfe) 

 from Japan. By G. Lewis, F.L.S. 



I FOUND only one species belongino; to the Lymexylonidte 

 in Japan, but it was widely distributed ; my most southern 

 specimens were taken on the heights of Ichibuyama, near 

 Yuyama, lat. 32°, and the most northern at Sapporo, lat. 44°. 

 In the Munich Catalogue, 1869, there are only twenty-two 

 species of Lymexylonidee given, and these are assigned to 

 three genera — Atractocerus, Hylecoetus^ and Lymexylon. It 

 is most probable that a species of Lymexylon is to be found in 

 Japan, and it is reasonable to look for and expect to find a 

 species of Atractocerus in the southern provinces or in the 

 group of islands lying to the south of Kiushiu, as Atracto- 

 cerus contains species having a wide range, and several are 

 known to occur in the islands of the Eastern Archipelago. 



Hylecoetus cassis, sp. n. 



Elongatus, parallelus, testaceus, pubescens ; capito dense punctato, 

 opaco, infuscato vel nigro ; thorace insequali, vago haud dense 

 punctato ; elytris obsolete 3-eostatis, apice infuscatia. 



L. 10-16 miU. 



Elongate, parallel at the sides, brownish or reddish yellow, 

 head opaque, thorax and elytra somewhat shining ; the head 

 densely punctate, punctures subocellate, with the narrow inter- 

 stices between them raised and running together, black, but 

 rarely infuscate, and in one large female the head is reddish 

 between the antennae and behind the eyes and the neck is 

 red ; the thorax uneven, punctures shallow and not closely 

 set, interspaces smooth, anterior angles rounded off, posterior 

 angles better marked ; the scutellum tripartite, obtuse behind, 

 with a carina on the anterior median area which anteriorly 

 splits into two (perhaps of use for stridulation) ; the elytra 

 vaguely 3-costate, interstices roughish, finely and ratlier 

 densely punctulate, apices infuscate ; the antennge and mouth- 

 organs reddish brown, or sometimes dusky, the large palpi in 

 male black ; the legs brownish yellow. The female, when 

 the surface is not abraded, has the head thickly hirsute. 



This species doubtless varies considerably in size ; tlie 

 measurements given above are taken from eight examples 

 only. 



Hah. Yuyama, Oyama in Sagami, Nikko, and Sapporo. 



Ann. (Ss Mag, N. Hist. Ser. 6. Vol. xvii. 5 



