Mr. J.S. Baly on the Classification of the Fumolpide. 147 
the disk*; anterior episternum rarely well-defined. Antenne filiform 
or subfiliform ; thighs usually armed beneath ; four posterior tbe for 
the most part simple, very rarely notched conjointly at their apex ; 
claws (Aulexis excepted) bifid. 
These insects are of moderate or small size, non-metallic, and of 
sombre hue, being either fuscous or black, and clothed commonly 
with concolorous hairs or. scales; they form (one or two aberrant 
genera excepted) a very natural group. The subfamily is difficult 
to define in words, the most striking character in the great majority 
being the very cylindrical thorax, together with the absence of its 
lateral border. Although not numerous in species, they break up 
into a number of small genera, separated on apparently slight but 
nevertheless (according to my views) well-defined characters, viz. the 
nature of the pubescence, the form of the pro- and meso-sterna, the 
toothing of the thighs, &c. The species are spread over a consider- 
able portion of the globe, being found in Europe, Asia (from Japan 
to the Malay archipelago), North and South America. Adowus, the 
typical form of the group, characterized by Kirby in his ‘ Faun. 
Bor.-Amer.’ on Eumolpus vitis, Fabr., an insect found both in North 
America and middle Europe, is the only genus belonging to the latter 
quarter of the world. Asia contains the following :—Necwlla and 
Trichotheca, India; Aoria, China, Siam, and Malacca; Adowus, the 
same, and also Japan; Nephrella, Ceylon; Lypesthes, Japan and 
China; Leprotes, Hongkong; Demotina, China, Ceylon, and the 
Malay archipelago; and Aulacolepis, Siam and Sumatra; together 
with the six following, peculiar to the Malay archipelago itself: viz., 
Aulewis, Piomera, Metaxis, Apolepis, to Borneo ; Stasimus, to Singa- 
pore; and Lepina, to Sumatra, Java, and Pulo Penang. In North 
America are found (in addition to Adowus) Xanthonia and Fidia. 
South America contains an equal number of species with the last, 
belonging to the genera Habrophora and Brevicolaspis—the former 
being natives of Peru and the Upper Amazons, the latter of Brazil. 
Africa and Australia have not (as far as my present knowledge goes) 
any representatives of the group. 
Table of Genera. 
A. Body clothed above with hairs or fine hair-like scales. 
a. Anterior edge of the prosternum separated from the epi- 
sternum by a sutural proove. . 666... e cece cece ees 1, Adoxus. 
awa. Sutural groove between the prosternum and episternum 
obsolete. 
* Aulacolepis is an exception, and forms, with its distinctly margined thorax, 
a passage between this tribe and the Heteraspine, 
