Feb., 1912.] Symbiotes duryi, a New Species of Endomychidae 463 



Symbiotcs 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 prothorax. 



B 



A 



C 



Fig. 2. Symbiotes diiryi. A = head (xoO). ep = epicranium. o = eye. 

 a= second segment antennae. Cl = clypeus. mp = distal segment maxillary 

 palpus. lb = labrum. md. = mandible. 



B = antenna (x.50). C = metathoracic tarsus (xlOOj. 



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 scutelltmi. 



Length 1.9 min. 



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 scutellmii in the 

 subsutural striae. Furthermore it is darker in color, and there is 

 a difference in the arrangement of the ordinary elytral striae. 



One of the specimens was partially dissected which afforded an 

 opportunity of observing the contents of the digestive tract. This 



