301 



to the small size of the larvœ operated on, and the obscurity 

 due to the cicatricial crust. Of these fourteen, in seven the 

 regeneration is complete except as regards size, one of the seven 

 being all but of full size, ranging down to the smallest, with the 

 limb (all the joints) of about half the normal length. In three 

 specimens the femur is of almost normal length, in all the tibia 

 is markedly reduced. In three at least of these six the femur 

 was completely removed. 



The remaining seven may in some cases have sustained 

 some injury to basal portions, either by operation or after 

 repair. In all cases there is presenta limb, of about half normal 

 size, in one (or two) cases distinctly less than this. There is 

 always a femur and tibia, without marked distinctions except 

 a little clubbing of tibia in two cases. None of these, however, 

 has a complete tarsus. It consists of two, three, or four joints, 

 short and thickened, or dwindling and filamentous. Three 

 specimens might be said to have five joints if ankylosis be dis- 

 regarded. All have claws (except one damaged specimen), 

 in two cases deformed. 



Basal parts interfered with (figs. 19, 25, 28), sixteen 

 specimens. — Of these, two have no trochanter, one has trochanter 

 only ; three have a nodule representing femur, etc. — one of these 

 has something by way of claws (fig. 14), and the other two, 

 sufficiently magnified, show trochanter, femur, tibio-tarsus (one 

 piece), and good claws (fig. 16), the whole doubled up, and 

 about I '5 mm. long if straightened out. Five have obvious 

 legs with femora 2 to 3 mm. long and tarsi with one joint in 

 four cases and two in the fifth. They all have claws, in one 

 case in a pocket (fig. 17), in another bifid. Five possess four- 

 jointed tarsi : in two the limb is of good size (fig. 18), in the 

 others the femur is 2 to 4 mm. long. 



Second Instar (four skins preserved). — Of these in only two 

 (fig. 26) was the injury to the tibia only. In these the larval 

 leg was complete, but a little short in the last instar, and in 

 the imago the limb was reduced too little to be noticed without 

 measurement. In nineteen the femur was wholly or partially 

 removed. In all of these the imaginai limb is complete with 

 five-jointed tarsi. In five the limb is visibly but not much 

 reduced in size ; in the other fourteen, it is of full size or appre 



