122 ZOOLOGISCHE MEDEDEELINGEN — DEEL I. 



cedentibus conjunctis subaeque longo, segmento genitali dorsali secundo 

 maris perbrevi, nigricante, genitali ventrali secundo dorsale superante et 

 quam hoc latiore. Pedum anticorum femora longiuscula, parte plus quam 

 quarta basali nonnihil incrassata, ad apicem partis incrassatae subcon- 

 stricta et subangulariter fracta, deinde usque ad apicem recta, linearia; 

 tibiae femoribus paullo breviores ; articulus secundus tarsorum primo 

 evidenter longior. Coxae mediae marginem posticum metasterni et basin 

 acetabulorum posticorum attingentes. Femora posteriora corpori subaeque 

 longa. Long. Ç 6.8 mm. 



Forma apte ra: Pronotum a processu suo impressione leni trans- 

 versa separatum, processu metanotum attingente, quam pronoto proprio 

 paullo angustiore, usque ad trientem apicalem subparallelo, deinde apicem 

 late rotundatum versus levissime angustato. 



Magelang (J.). 



Extremely similar in colour to the quite inadequately described T. 

 Anadyomene Kirk., but it is much smaller and a comparison with Ceylo- 

 nese specimens of that species reveals the following important structural 

 differences: the abdomen in pravipes is much shorter and not longitudinally 

 ridged beneath in the middle, the apical angles of its last segment are 

 much less acute, the fore legs and the second male genital segment are 

 quite differently constructed, and the length-relations between the meta- 

 sternum and the first ventral segments and between the middle coxae and 

 the adjacent parts are different. The macropterous form of pravipes is 

 unknown. In T. Anadyomene, of which almost only the colour-markings 

 have been described by Kirkaldy and Distant, the venter is as long as 

 the meso- and metasternum together and longitudinally carinated in the 

 middle, the apical angles of its last segment are very acutely produced, 

 the second male dorsal genital segment is produced beyond the corre- 

 sponding ventral segment, the fore femora are almost straight and not 

 incrassated at the base, the fore tibiae are as long as the femora, the two 

 joints of the fore tarsi are of equal length, the metasternum is as long 

 as the two first ventral segments together, the middle coxae reach the 

 middle of the metasternum but not the base of the hind acetabula, and 

 the hind coxae barely reach the middle of the second ventral segment. 



In a paper sent for publication some months ago but not yet printed 

 I have maintained Limnogonus Stal as a genus distinct from Limnometra 

 Mayr, but after the study of further materials I find that Limnogonus 

 cannot be considered even subgenerically distinct, as the transitions in 

 the mutual length of the two joints of the fore tarsi and in the shape 

 of the apical angles of the last abdominal segment are too numerous. 



