CossonidcB of Japan. 17 
usculis subgracilibus (funiculi 5-articulati articulo secundo, 
elongate) et mox pone medium rostri insertis, necnon 
pedibus (prassertim anticis) incrassatis. 
A Tychius et ilhg, aspectus. 
The very anomalous little Cossonid (several examples 
of which were taken by Dr. Adams in the island of Awa- 
sima, near Sado, off the north-west coast of Nipon) from 
which I have compiled the above generic diagnosis is one 
of the most remarkable members of the family which has 
hitherto been brought to light, and one Avhich is especially 
important as adding another and most well-defined form 
to that particular section AA'hich is characterized by Peji- 
tarthrum, Pentacoptus , the Atlantic Pentatemnus and 
Mesoxenus, the south-European Amaurorhinus (if indeed 
it be truly distinct from Mesoxenus), and the St. Helena 
Microxylobius, — in all of which the funiculus is composed 
of only five joints. Prima facie indeed its aspect is so 
remarkable (from its rather depressed, wide, oblong-elhptic 
body, short, transverse prothorax, and extremely slender, 
linear rostrum) as to be slightly suggestive of a large 
Tychius and other members of the ErirhinidcB ; never- 
theless the structure of its abdomen, tibite, and other 
details, show it to be an unmistakeable Cossonid. In 
other respects it is conspicuous for the smallness of its 
head, and for its antenna (which are rather long and 
slender) being implanted a trifle behind the middle of its 
very narrow rostrum, with their scape flexuose, and their 
funiculus-articulations (the second of which is compara- 
tively elongate and subconical) somewhat loosely connected 
together. Its metasternum and the basal segment of its 
abdomen are both of them rather shorter than is the case 
in the ordinaiy members of this family (though the former 
is not so abbreviated as in the Microxylohii of St. Helena) ; 
its scutellum is very apparent ; its legs are a good deal 
thickened, especially the anterior pair; and its feet are 
considerably developed, with their third joint widened and 
deeply bilobed. 
4. Tychiodes Adamsii, n. sp. 
T. oblongo-ellipticus, latus, depressus, nitidus, brunneo- 
piceus ; capite parvo, rostro lineari, angustissimo, nitidis- 
simo, fere impunctato, fronte foveolata et punctulis per- 
paucis adspersa; prothorace brevi, transverso, rotundato- 
TRANS. ENT. SOC. 1873. — PART I. (mAR.) C 
