JIO 
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346 . 
LEIOCHITON READII. 
Order Coleoptera. Fam. Carabidae Lat. Scaritidae? MacL. 
Type of the Genus , Scarites arcticus Payk. 
Leiochiton Curtis. — Clivina Gy l ., Dej. — Scarites Payk., Schd. 
Antennce inserted before the eyes, close to the base of the man- 
dibles, not longer than the thorax, slender and moniliform, pu- 
bescent, excepting the 4 basal joints ; 1 1 -jointed, 1st joint the 
most robust and rather the longest, 2nd the shortest and smallest, 
3rd slender, but almost as long as the 1st, 4th slender not much 
longer than the 2nd, the remainder oval, terminal joint elongate- 
ovate (6). 
Labrum transverse, anterior angles rounded, furnished with a 
few short spiny bristles, concave before and producing a few 
long bristles (1). 
Mandibles curved and pointed, one having a strong tooth on the 
inside (2), the other with 2 very small tubercles. 
Maxillae terminating in a claw, the internal margin ciliated with 
curved spines, hairy towards the bottom. Palpi , internal biar- 
ticulate, basal joint longer than the terminal one which is slightly 
curved and rounded at the apex : external long and 4-jointed, 
basal joint small, 2nd large, 3rd rather shorter, clavate-truncate, 
4th long, robust elliptical truncate (3). 
Mentum transverse, bilobed, being deeply emarginate in front, 
and producing an obtuse lobe in the centre, the lateral ones 
rounded. Palpi large, attached to 2 long scapes, triarticulate, 
basal joint minute, 2nd long and robust, furnished on the inside 
with 2 bristles, 3rd considerably longer, subfusiform-truncate. 
Labium oblong, anterior margin concave, with 2 bristles in the 
centre (4). 
Head small subtrigonate. Eyes small and prominent. Thorax much 
broader than the head , subglobose, produced behind like a hoop , 
covering the peduncle of the abdomen upon which is placed a minute 
Scutellum. Elytra ovate , slightly emarginate towards the apex. 
Wings ample . Legs rather short : Thighs, anterior a little incras- 
sated : tibiae, anterior short , thickened towards the apex , notched on 
the inside, furnished with 2 acute spines and ciliated with bristles, the 
external side towards the apex being slightly denticulated , the others 
spurred at the apex: tarsi 5-jointed, 3 basal joints slightly dilated 
in the males (5), somewhat crescent-shaped , the 4th minute, 5th 
long and slender. Claws rather long and bent. 
Readii Curtis. 
In the Cabinets of Mr. Reade and the Author. 
