NEW BRITISH SPECIES, ETC., IN 1865. 79 



the apical joints of which are more transverse, and with the 

 left mandible in the male exceedingly developed, being 

 sometimes increased in length and curved, and sometimes 

 bearing a short tooth on its upper surface, which, in a few 

 examples, assumes the form of a very long, sharp, elevated, 

 recurved horn, reaching far above the head. 



25. Agathidium clypeatum. Sharp, Proc. Ent. Soc. 



6 Nov. 1865 ; Ent. Monthly Mag. vol. ii. p. 169. 

 mandihulare, Wat. Cat., nee Sturm. 



Described by Mr. Sharp from a male in Dr. Power's 

 collection, three specimens belonging to Mr. Bold, and a 

 pair in the British Museum (under the nam.e varians, ob- 

 tained from Mr. E. VV. Janson, — who, I believe, took them 

 in a fungus in Headley Lane). It is immediately to be dis- 

 tinguished from all its allies by the shallow, semicircular 

 emargination of its clypeus. 



In Dr. Power's male the left mandible is exceedingly 

 developed. 



26. Agathidium convexum, Sharp, Proc. Ent. Soc. 6 



Nov. 1865 ; Ent. Monthly Mag. vol. ii. p. 169. 

 piceuniy Crotch, Cat., 7iec Erichs. 

 Allied to A. marginatum j Sturm ; but differing from that 

 species in the possession of an abbreviated sutural stria 

 (commencing, as usual in this genus, at the apex of the 

 elytra), and in the generally darker club of its antennas. 



It appears to be not uncommon in the London district, and 

 elsewhere. 



27. HisTER succicoLA, Thomson, Skand. Col. iv. 224; 



G. R. Crotch, '' The Entomologist," vol. i. 308, 4. 

 Mr. Crotch records specimens from AYeston-super-Mare 



