ANATOMY OF MARELLIA REMIPES — CARBONELL 



79 



pattern (not shown in fig. 13). On the ventral surface of the basal part 

 of the hind femur, the organ of Brunner in the form of a small, 

 pointed tubercle can be clearly seen in a mesal view of the leg. 



The hind tibiae (fig. 13 A, B, Tb) are greatly expanded laterally 

 in their apical halves. Seen from its upper surface, the hind tibia 

 (A, Tb) is distinctly shaped like an oar or paddle. The vi^hole sur- 

 face of the distal expanded portion of the tibia has its margins up- 

 curved, so that the expanded part is spoon-shaped rather than simply 



CX UlTL 



Fig. 12. — Fore and middle legs and tarsus of Marellia rcmipcs (female). 



A, right fore leg, posterior surface. B, right middle leg, posterior surface. 

 C, apical portion of tibia, tarsus, and pretarsus of right middle leg, ventral view. 



Ar, arolium; Cx, coxa; Fm, femur; Pin, planta; Ptar, pretarsus; Tar, tarsus; 

 Tb, tibia ; TP, tarsal pulvilli ; Tr, trochanter ; Uti, claws ; Utr, unguitractor plate. 



flat. The lateral margins of the tibia bear the usual rows of spines, 

 which, because of the flattened form of the tibial edge, appear like in- 

 dentations rather than spines. In the last three interspinal spaces of the 

 inner margin there is a fringe of stifif hairs (C, h) of which the func- 

 tion is unknown to the writer. Judging by the position of the shaft 

 of the tibia, which in its distal dilated part may be distinguished only 

 as a median thickening along the ventral surface, it seems that the 

 outer margin is more expanded than the inner one. 



At the tip of the tibia, there are four very strong, movable tibial 

 spurs (fig. 13, TSr) which are curiously shaped like boats. Their 

 upper surfaces are concave, excavated with raised margins, and their 



