472 
ZOOLOGICAL LITERATURE. 
groups of Tentyriides, failed to detect the character by which they 
might be distinguished. Kraatz discusses the characters of the 
exceptional genera, and maintains that Triophorus and Trien- 
toma, referred by Lacordaire to his Gnathosiides ^ have their 
nearest allies among the Tribolocarides ^ the second of these ge- 
nera being the analogue of the Gnathosiid genus Capnisa. Stomion 
(Waterh.), placed by Lacordaire among the Tenty Hides vraiesy 
is also to be classed with the Ti'iholocarides ; and Hylithus 
(Guer.) must be removed from the Hyperopides to the Thinoba- 
tides. The Egyptian genus Scelosodis is transferred in the oppo- 
site direction, namely from the Thinobatides to the Hyph'opides y 
where it will stand in the vicinity of Stenosida (Sol.). From 
the consideration of the constitution and characters of Lacor- 
daire^s groups, Kraatz comes to the conclusion that they are not 
sufficiently distinct from each other to be worth maintaining, and 
he accordingly proposes to divide the subfamily Tentyriides only 
into two groups, those of the Old and those of the New World. 
The character on which he relies for the distinction of these 
groups is derived from the tarsi, these organs being ciliated in 
the Tentyriides of America and simple in those of the eastern 
hemisphere. Of the latter he gives the following eharacter : — 
Tentyriides simplicipedes. 
GnathosiulvSy Tentyriides vraics, IIyp6ropulcSy Lac., Tkinobaiides, Lac. 
ex parte. 
Metatlioracic episterna narrow j iiitercoxal process of abdomen narrow, 
generally truncate, rarely acuminate j tarsi simple (that is to say, canalicu- 
late), with a few spines, furnished with short spiniform hairs at the sides 
beneath. lie gives the following analytical table of the genera belonging to 
the great group thus formed : — 
I. Mandibles free, not concealed at the base beneath the sides of the ‘ 
epistome. 
A. Eyes transverse, nearly divided. 
1. Head above the eyes wrinkled j antemiiB short, slender ; body 
byrrhiform Capnisa (Lac.). 
2. Head not wrinkled j eyes nearly covered by the posterior lamina j 
body oblong Dailognatha (Stev.) 
(= Gnathosia, Lac.). 
B. Eyes not divided ; body elongate Colposcelis (Sol.). 
II. Mandibles nearly always concealed beneath the epistome at the base. 
A. Mandibles not entirely concealed at base. 
1. Antennae with joint II about equal to 10^ eyes reniform labrum 
distinct j clypeus strongly excised on each side ; post, angles 
of thorax distinct Auatolica (Esch.). 
2. Antennae with joint II shorter than 10; head rugose; thorax 
scarcely punctate Prochoma (Sol.). 
B. Base of mandibles concealed beneath the epistome. 
1. Body black, or pitchy black. 
