Cossonid(B of Japan. 41 
2"*° magis evidenter separatis quam in Cossonidis typicis, 
necnon inter se subaequalibus. Aritennce brevissimas sub- 
gracCes, prope medium rostri brevissimi inserta3 ; scaj)o 
brevissimo, clavato \funiculo 7-articulato, art.° l""'magno, 
lato, transverso-quadrato, sequentibus (a 2*^" parvo, bre- 
vissimo, trausverso) longitudine jjaulo sed latitudine valde 
paulatim crescentibus, inter se argute separatis, iilt."" ad 
capitulum magnum solidum subglobosum baud arete appli- 
cato. Pedes subgraciles, anteriores ad basin approximati, 
postici parum (sed baud valde) distantes : femoribus 
muticis : tibiis rectis, subgracilibus, ad apicem externum 
in uncum magnum deflexum elongatum productis : tarsis 
longissimis, gracilibus, art.° 1"^° elongate, 3*'" reliquis vix 
latiore sed evidenter minute bilobo, ult."° elongate, clavato, 
unguiculis magnis armato. 
Obs. — Forma generali breviter ovato-cylindrica, rostro 
brevissimo crasso subtriangulari, scrobe nullo, elytris 
postice obtuse desilientibus necnon ibidem etiam asperatis, 
coxisque anterioribus approximatis genus inter Cossonidas 
anomalum, et Hylastes, aut potius Dendroctonus, Scolyti- 
darum, prima facie simulans. Prteterea conspicuum est 
corpore calvo, crasso, rugose sculpturato, oculis magnis 
sed omnino demissis, antennis brevissimis, scapo pra3cipue 
brevissimo, funiculi articulo primo magno, transversim 
quadrato, reliquis (a 2^*° minutissimo, transverse) gradatim 
conspicue latioribus, capitulo magno rotundato solido, 
metasterno baud valde elongate, etiam coxis posticis baud 
late separatis, pedibus subgracilibus, tarsisque (longissimis) 
prsecipue gracilibus, art.'* r^°et ult,°'° elongatis, hoc w^i^mz- 
cmZ/s magnis munito. 
Tbe unique example from which I have drawn the above 
structural characters is one of the most important and 
interesting of all the Japanese Cossonidce. which were 
collected by Mr. Lewis, as supplying a second representa- 
tive of a remarkable group which has hitherto been ob- 
served only at St. Helena and the Cape of Good Hope j 
and it is the nearest true member of the Rhyncopliora (as 
yet made known) to the closely-allied Hylastideous forms 
of the ScolytidcB, — its somewhat short, ovate-cylindric 
outhne, and excessively abbreviated, thick, subtriangular 
rostrum, in conjunction with its obsolete scrobs, its ap- 
proximated four anterior coxse, and the fact of its elytra 
being rather obtusely-shortened, or bent down, behind, 
where they are besprinkled with tuberculiform asperities, 
