Rhynchophorous Coleoptera of Japan. 139 
emarginate below, lateral borders meeting obliquely at suture 
above impression, and curved out as in P. calamus, and then 
sinuate, external angles produced downwards and_ backwards, 
longer and more curved than in the latter species; terminal 
impression emarginate almost to middle, the emargination broader 
than long, with inferior sutural angles very slightly produced, its 
surface shining, foveolate on either side, with suture elevated and 
tuberculate. Last abdominal segment concave. 
This species, also one of the Platypi cupulati, is best 
separated from P. calamus by the structure of the apical 
impression, the length of which measured along the suture 
is about equal to the depth of the emargination, whereas 
in P. calamus it is about double its depth. The tuber- 
cles along the suture, the minutely produced sutural 
angles at the fundus of the interior emargination, and a 
fine serration of the superior border, where it curves 
away from the suture, are peculiar to this species. P. 
hamatus is evidently closely allied to P. forficula, Chap., 
of which I have been unable to see a typical specimen. 
I have, however, an unnamed Platypus, taken by Mr. 
Wallace in Gilolo, which agrees with the description of 
P. forficula, and is probably to be referred to that species, 
as Chapuis appears to have seen all Wallace’s Platypini. 
It most closely resembles P. hamatus, but the sutural 
border of the elytra makes a sharp angle with the upper 
margin of the terminal impression, which is much 
narrower than in the latter species, being not half as 
deep as the inferior emargination. 
Diapus, Chap, 
An Oriental genus, represented in Japan by one 
species. 
Dapus aculeatus, sp. n. 
Frm. Picea, margine prothoracis postico et elytris ad basim 
dilutioribus ; fronte deplanata, in medio breviter carinata ; protho- 
racis disco nitidissimo, basi fortiter punctata ; elytrorum interstitiis 
lo, 20, 30 elevatis, 30, 50 ad apicem in spinulas validas productis ; 
7o breviter spinoso, extus cum 80 et 90 serratis conjuncto, angulo 
externo in spinulam obliquam angustissimam producto, depressione 
postica breviter bispinata. Long. 2°8 mm. 
Two examples, Higo. 
