AGRAEUS CONSTBICTÜS. 29 



NOTE IX. 



DESCRIPTION OF A NEW SPECIES OF THE COLEOP- 

 TEROUS FAMILY ELATERIDAE. 



BY 



C. RITSEMA Cz. 



Agraeus constrictus, sp. n. 



Length 6 mm. ; breadth at the shoulders 2,5 ram. — 

 Black; the antennae, with the exception of the basal joint, 

 and the palpi, pale ferrugineous ; the basal joint of the 

 antennae, the margins of the prothorax, the under sur- 

 face of the body , and the legs , dark brown-red. — Rather 

 elongate, strongly punctured all over, the punctures on 

 the prothorax and on the under surface of the body some- 

 what smaller than those on the head and on the elytra. 



The head with a large, somewhat pear-shaped longi- 

 tudinal impression. The prothorax slightly transverse ; the 

 lateral margins flattened , and , a little behind the middle , 

 angularly constricted ; the sides of the anterior portion 

 strongly and regularly rounded, those of the posterior 

 portion divergent and minutely siuuated before the acute 

 posterior angles , which are directed backwards. The middle 

 of the disk raised towards the anterior margin so as to 

 form a conical gibbosity which is emarginated at the top 

 and covered with erect fulvous hairs; on both sides of 

 this gibbosity an oval patch of a long and dense pale 

 JNotes from the I^eyden Museum, Vol. III. 



