Feb., 1912.] Symbiotes duryi, a New Species of Endomychidae 463 
Symbiotes duryi n. sp. 
Characters. — Form more or less broadly oval, moderately 
convex, scarcely pubescent, color dull testaceous; head scarcely 
punctuate, antennae with club moderate in size, 1. segment large, 
2. segment narrow but of approximately the length of the 1. segment 
and equal to the 3. and 4. together, 3.-8. subequal in length but 
slightly increasing in diameter, 9. larger, triangular, 10. transverse, 
about three-fourths as long as the 9. 11. asymmetrically pointed. 
Prothorax twice as wide as long, strongly rounded anteriorly, 
broadest at middle, margins toothed, median region convex, base 
with a strong transverse sulcus from the lateral portions of which 
extend on each side triangular longitudinal sulci reaching anter- 
iorly about half the length of the pro thorax. 
Fig. 2. Symbiotes duryi. A = head (xoO). ep = epicranium. o = eye. 
a = second segment antennae. Cl = clypeus. mp = distal segment maxillary 
palpus. lb = labrum. md. = mandible. 
B = antenna (xoO). C = meta thoracic tarsus (xlOO). 
Elytra short, oval, decidedly broader than the prothorax, 
attaining their greatest width about one-fifth of their length from 
the base; punctures arranged in more or less confused rows; 
subsutural striae broadly curved at the scutellum and attaining 
the middle of the base of the elytra; composed of extremely large 
punctures which reach their maximum size near the scutellum. 
Length 1.9 mm. 
Distribution. — Gambier, Ohio, (U. S. A.). 
The species is easily distinguished from its nearest ally S. gib- 
berosus Lucas, of Europe, and from other undescribed North 
American species, through the comparatively much broader elytra 
and the extremely large punctures near the scutellum in 'the 
subsutural striae. Furthermore it is darker in color, and there is 
a difference in the arrangement of the ordinary elvtral striae. 
One of the specimens was partially dissected which afforded an 
opportunity of observing the contents of the digestive tract. This 
B 
A 
C 
