C6 CLAVICOHNIA. [Catops. 



* 



posterior tarsi which equals in length the three following taken together ; 

 the elytra also are more rounded and are not so strongly truncate ; the 

 average size also is somewhat larger. L. 2^-3^ mm. 



In moss, leaves at the foot of trees, flood refuse, &c. ; very rare ; Richmond 

 ( Guyon) ; Folkestone (Power) ; it has also been recorded from Staffordshire and 

 from Sherwojd Forest. 



COLON, Herbst. 



The species belonging to this genus very closely resemble some of the 

 small species of Choleca, but may at once be distinguished by not having 

 the eighth joint of the antennae smaller than the seventh ; the antennae are 

 short and are terminated by a distinct 5-jointed club, and the tarsi are 

 all 5-jointed ; according to the Munich catalogue there are twenty-nine 

 species, but the number has been somewhat modified since the date of its 

 publication ; they are chiefly confined to Europe, but representatives have 

 been recorded from Northern Asia and Alaska; in all probability the 

 species are much more numerous than they are supposed to be, but they 

 are, as a rule, extremely rare, and very difficult to determine, as they are 

 exceedingly alike, and their specific distinction often rests with the male ; 

 owing to their rarity very little is known about their habits ; they are 

 usually taken by evening sweeping in early summer, and from one or 

 two captures that have been made it is quite possible that they might be 

 found in larger numbers on open and seemingly barren spots on the sides 

 of hills, &c., where the collector would not, as a rule, think of searching 

 for them. The following table of the species is more or less a provisional 

 one, as many of them require very careful study and comparison with 

 other species before they can be determined with any accuracy. 



This genus may be divided into two sub-genera as follows : 



I. Anterior tarsi simple in both sexes COLON, i. sp. 



II. Anterior tarsi moderately diluted in female, more 

 strongly dilated in male MYLCECUCS, Latr. 



(Sub-Gen. Colon, i. sp.). 



I. Form longer oval : thorax scarcely broader at base than 

 elytra ; elytra with rather distinct traces of stria; ; pos- 

 terior femora of male without tooth C. VIENNENSE, Herlst. 



II. Form shorter oval ; thorax ample, plainly broader at 

 base than elytra ; elytra with only slight traces of 



strise. 

 i. Thorax less strongly punctured ; eighth joint of an- 



tennto considerably smaller than ninth ; posterior 



femora of male with a very small tooth C. SEBBIPES, Sahib. 



ii. Thorax more strongly punctured; eighth joint of 



antennte only slightly smaller than ninth; posterior 



femora of male with a strong sharp tooth . . . . C. PUNCTICOLLE, Kr. 



C. viennense, Herbst. Oblong, rather long and narrow, of a 

 brownish or reddish-brown colour, with rather close yellowish pubescence ; 

 antennse reddish-brown, with club usually darker ; thorax almost as long 



