SPITHOBATES. 105 
respects, more especially in the structure of the mouth-parts, they agree well with each 
other. Spithobates differs from Lissodema and Salpingus and their allies in the broad 
apical joint of the maxillary palpi, convex and non-rostrate head (the epistoma con- 
founded with the front), coarsely faceted eyes, &c., and also in its more elongate shape. 
In both species the inner lobe of the maxille is furnished with a sharp claw; and the 
upper surface of the body and the legs and antenne are clothed with very long, erect, 
bristly hairs (which are easily rubbed off) in addition to the short decumbent pubescence. 
The sides of the thorax are denticulate as in Lissodema, but more sharply so; the 
last-mentioned genus does not appear to have been detected as yet in North America. 
Upper surface unicolorous; antenne with joints 5-10 broader than those preceding 
and subequal, 11 elongate-ovate ; eyes large. 
1. Spithobates setosus. (Tab. V. figg. 8; 8a, labium; 8 6, maxilla and maxil- 
lary palpus.) 
Elongate, moderately convex, piceo-castaneous or castaneous, shining, sparsely clothed above and beneath 
with ashy decumbent hairs, the upper surface and the legs and antenne also with scattered long, erect, 
black, bristly hairs. Head somewhat thickly and rather coarsely punctured at the sides, sparsely so along 
the middle; eyes large and coarsely faceted; antennz with joints 5-10 broader than 2-4, each widened 
towards its apex and longer than broad, 11 ovate and nearly twice as long as 10, 5-11 more or less stained 
with piceous, the rest ferruginous ; prothorax with five very prominent teeth on each side (the anterior 
one forming the anterior angle the shortest, the hinder one placed at some distance before the base and 
sometimes followed by a shallow oblique groove extending inwards), the apex (narrowly), the base (rather 
broadly), and a longitudinal space down the middle of the disc smooth, the rest of the surface coarsely and 
irregularly punctured, the punctures longitudinally or sinuously confluent ; scutellum densely punctured ; 
elytra a little depressed below the scutellum and also with a shallow transverse depression on the middle 
of each below the base, the basal portion with rather coarse punctures arranged in irregular rows, the 
punctures thence to the apex very much finer and shallower; beneath thickly and somewhat coarsely 
punctured, the metasternum very coarsely so at the sides; legs piceo-castaneous, the tarsi lighter, the 
tibize curved a little outwards. 
Length 32-5 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Numerous examples. 
Elytra spotted ; antenne with joints 9-11 longer and broader than those preceding ; 
eyes smaller. 
2. Spithobates maculatus. (Tab. V. fig. 9.) 
Moderately elongate, convex, shining, piceous, the head and prothorax piceo-castaneous or castaneous, the elytra 
each with a large spot before and another behind the middle, not reaching the suture, flavo-testaceous ; 
sparsely clothed above and beneath with ashy decumbent hairs, the upper surface, legs, and antenne also 
with scattered, long, black, erect, bristly hairs. Head coarsely and somewhat closely punctured; eyes 
rather small ; antenne more or less ferruginous, joints 2-8 very gradually widening outwardly, 9 and 10 
each much broader and longer than 8, 11 elongate-ovate and nearly twice as long as 10; prothorax with 
four or five not very distinct teeth on each side, the hinder one usually the longest and often followed by 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 2, December 1889. PP 
