C/iil(J/tura.j STArilYLl.MDiE. 51 



district, " Ravonswortli Woods, banks of Devil's Water and Iitliing, in rojcctamcnta " 

 (IJiild); Scotland, local, Sohvay district (Sharp), Clyde district, l*aisl(!y (Jtorris 

 Young). 



The genus Gijmnnsa ouglit to be inserted at the end of this division, 

 if we keep accurately to the tarsal system ; it has, however, been so 

 long associaled with Mijllama and Deinopsis that it seems the best course 

 to still keep these three genera together at the end of the Aleocharinae ; 

 their connexion, however, is considerably slighter than it is usually 

 supposed to be, and they might with reason bo separated, 



MYRMEDONIINA. 



The members of this tribe have the anterior tarsi fonr-jointed, and the 

 intermediate and posterior tarsi five-jointed : only a comparatively small 

 number are found associated with ants, so that the name of the tribe is 

 somewliat misleading, and miglit with advantage be changed to Homalo- 

 tina ; the number of genera contained in the tribe can hardly be stated 

 Avith accuracy, as so many diifcront opinions are held by authors regard- 

 ing the division of the large genus Ilomalota, 



I. Elytra with sides reflexed upwards foi-ming an ex- 



planate margin DiNARDA, Mamik. 



II. Elytra witliout reflexed margin. 



i. Thorax square, oblong, or transverse ; pro- 

 sternum scarcely developed in front of anterior 

 coxaj. 



1. First three (apparent) dorsal segments of hind 



body furnished with lateral tufts of hairs . . Atemeles, Sleph. 



2. First three (apparent) dorsal segments of hind 



body without lateral tufts of hairs. 



A. First joint of posterior tarsi at least as long 



as the next two together. 



a. Intermediate coxaj distant ; antennae 



stouter. 



a*. Form rather broad ; thorax square or 



transverse ; insect winged Mfrmedonta, Er. 



b*. Form narrower; thorax oblong; in- 

 sect apterous AsTlLBUS, Di//wi/n. 



b. Intermediate coxa) contiguous; antennaj 



long and slender, 

 a*. Tarsi more elongate ; form narrower ; 

 head less sunk in thorax, 

 af-. Neck broad ; head narrower, not, or 



only slightly, depressed Taciitusa, Er. 



bf. Neck very narrow ; head broader, 



very strongly depressed Myemecopora, Sai(?r>/. 



b*. Tarsi less elongate; form broader; 



head more sunk in thorax Gntpeta, T/oms. 



B. First joint of posterior tarsi not elongate;* 



last joint, as a rule, very long. 



* Homalofa gregaria and H. pygmcea are more or less exceptions; these species 

 will be discussed under Homalota. 



