ALEOCHARIDES. 151 



1, Posterior tarsi with five joints. 



A A, First two joints of labial palpi about equal 

 in thickness. 

 Spines on inner maxillary lobe placed not very closely. 

 (I a. Ligula cleft ; all tarsi with five joints. 

 A a. Head constricted behind. 



Ligula elongate, cleft at apex ; third joint of maxillary 

 palpi a little longer and stouter than second ; second joint 

 of labial palpi a little shorter than first ; thorax only a 

 little broader than long, gently narrowed behind ; abdomen 

 parallel-sided ; legs long, first joint of posterior tarsi as long 

 as last joint. cede a, Er. 



J5 h. Head not constricted behind. 



A 1, Third joint of maxillary palpi dis- 

 tinctly longer than second. 



Ligula elongate, cleft at apex ; second joint of labial 

 palpi scarcely shorter than first ; thorax half as broad again 

 as long, sides and base gently rounded, with a transverse 

 depression ; abdomen parallel-sided, a little narrowed at 

 extreme apex ; first joint of posterior tarsi a little longer 

 than second but much shorter than last joint. 



Ischnoglossa, Kr. 



JB 1. Third joint of maxillary palpi scarcely 

 longer than second. 



Ligula elongate, cleft to middle ; second joint of labial 

 palpi scarcely shorter than first ; thorax double as broad 

 as long, narrowed in front ; abdomen somewhat narrowed 

 at extreme apex only ; legs rather short, first joint of pos- 

 terior tarsi a little longer than the second but nmch shorter 

 than last joint. TliiasopMla, Kr. 



h b. Ligula entire, elongate ; anterior tarsi 

 with four joints, hinder pairs with five joints. 



First and second joints of labial palpi very closely con- 

 nected, about equal in length. Head not constricted 

 behind. 



A a. Paraglossae slightly prominent ; base 

 of thorax scarcely perceptibly emarginate. 



Thorax about half as broad again as long, somewhat nar- 

 rowed behind ; abdomen parallel-sided or even a little 



