Rhynchophorous Coleoptera of Japan. 127 
constructed as in S. daimio 3, but with the ciub elongate 
and pointed. Female with antennal club a little more 
elongate than in S. tycon 2. Hlytra with the sutural 
stria alone faintly expressed in the male, declivity with 
Ist and 38rd interstices tuberculate throughout, the 
remainder more finely at the upper angle. Prothoracic 
foveee of male distinct. Anterior tarsal joints trigonate. 
The male has the prosternum prominent in the middle, 
the prominence corresponding to a wide deep anterior 
“nocket”; the anterior margin of the prosternum 
is constructed similarly to that of S. mikado $, but the 
two hooks are replaced by a transverse chitinous plate, 
the anterior angles ot which are acute and prominent. 
PLATDY PINE: 
One of the most admirable features of Chapuis’ “Mono- 
graphie des Platypides,’ upon which our knowledge 
of this sub-family is almost entirely based, is the ability, 
almost to be called intuition, with which he has grouped 
forms, often widely different in appearance, as_ the 
respective sexes of the species which he described ; and 
an examination of his own collection, or’ of any other 
containing species named by him, affords proof that his 
judgment was in the main correct, which is remarkable, 
if it be remembered that he had to reducé to order a 
vast and heterogeneous mass of material from all parts 
of the world. For he raised the number of species from 
15 (excluding a few unrecognized forms) to 202; and 
entomologists have been so far content to accept his 
work as final, that since the publication of his ‘‘ Mono- 
eruphie ” they have added but six species to those therein 
described. But, identification of two forms as the 
respective sexes of a single species is obviously quite 
compatible with error as regards the reference of them 
to their proper sexes, and it is a matter of common 
opinion among entomologists that he has, throughout the 
work, reversed the sexes and called the male the female 
and vice-versa. This was first suggested to me by the 
late Mr. Janson; it has not been, to my knowledge, 
explicitly stated in print, but Hichhoff has indicated a 
