A REVISION OF THE GENUS LEPTOCOXOPS, SKUSE. 



9 



Legs moderately long, the hind pair longest, clothed with short hairs. Femora 

 unarmed. Tibiae each armed distally with a short, stout, ventral spur, those of the 

 fore and hind legs in addition with one or two oblique rows of bristles. First tarsal 

 segment of the fore and middle legs about twice the length of the second, of the hind 

 legs about one and one-half times the length of the second ; second to fourth 

 tarsal segments cylindrical, decreasing in length progressively, the fifth segment 

 distinctly longer (in L. laclcipennis Kieffer states that it is shorter) than 

 the fourth. Differentiation of the apical bristles of the first and second tarsal 



Fig. 5. Terminal segments of antennae of females of : {a) L. siamensis, sp. n. ; (b) L. stygius, 

 Sk. ; (c) L. grandis, sp. n. ; (d) L. longicornis, sp. n. ; {e) L. rhodesiensis, sp. n. ; (/) Acanthoconops 

 spinosifrovs, sp. n. ; (g) L. kerteszi var. americanus, n. ; {h) L. torvens, Twns. (x 260 circa). 



segments into spines has taken place in most species, and of some of the 

 ventral bristles of the first segment (fig. 4, g) in a few species. In the latter 

 case considerable prominence has been given to this character by some writers 

 in their specific descriptions, and the exact number and arrangement of such spines 

 has been recorded ; but variation in details is frequent, and may occur not only in 



