95 



The relative lengths of the two basal joints of the antennae are 

 useful features in distinguishing the species. The first is sometimes 

 longer and sometimes sliorter (often to a considerable extent either 

 way) than the second, and in the cases where it is of almost even 

 length a slight difference one way or the other may be noted, when 

 the greatest lengths of the two joints are clearly visible. The 

 described species known to me way be divided as follows : 

 First joint longer than second. 



convexipennis. 



costirostris . 



languidus. 



lateralis. 



malevolens. 



nielancholicus. 



sinuatus. 



turgidus. 



Second joint longer than first. 



cerviims. 



Conloni. 



delens. 



marghialis. 



urticarum. 



616. PERPERUS MARGINALIS Roh 



A fairly common species about Sydney. The white markings at 

 the sides of the prothorax, and the white sutural stripe are not 

 always conspicuous. The derm varies from black to dull red. The 

 rostrum is fully carinated, but the carina is concealed on specimens 

 in perfect condition. 



The whitish lateral markings are suggestive of lateralis, but the 

 second joint of the funicle is slightly longer than the first, instead of 

 shorter. 



On one specimen the clothing is almost entirely white, but in 

 places with a faint greenish or very faint golden gloss. 



Three specimens belonging to the Museum (without locality 

 labels) appear also to belong to the species, but have no sharply 

 defined white markings, and nearly all the scales are of a rather 

 dingy greyish-white. 



617. PERPERUS LANGUIDUS Er. 



A small specimen labelled as from King George's Sound, but 

 probably in error. 



618. P. turgidus Pasc. 



