4GO 



MKKIsTir VARIATION. 



[PART i. 



ran-ly the posterior ends of the kidneys are joined by a bridge of 

 ligamentous t issue 1 . 



A ivmarkablr case, iii which the union of the two kidneys 

 was very rmiij,],-!.- ami only indications of duplicity remained, is 

 given by PlCHANCOURT, Gaz. hebd., 1879, p. 514. 



Illustrative Cases. 



To these familiar instances are added a few less generally 

 known. 



*71~>. Capreolus caprea (Roebuck): specimen having the two horns 

 compounded in tin- middle line, forming a common beam for almost 



tin- lower half of tin' hum (Fig. 147). This specimen was exhibited 

 uniting a large series of abnormal horns in the German Exhibition 

 hfld in London 1891. Casts of it are in the Brit. Mus. and Camb. 

 Univ. Mus.'. 



FIG. 147. A Roebuck d',ii>r,'olits caprea) No. 705, having the horns com- 

 pounded to form one. 



7 1 <;. Limax agrestis : specimen having the upper tentacles united 

 into one in the middle line. The eyes were paired as usual. 

 KOUBES and HAXLKY, Hist. Brit, Moll, iv. p. 288 and I. PI. JJJ, 

 fig. 4. 



1 See GIU-BI it, Vin-h. Arch., 1865, xsxii. p. 111. 

 ! The original is at Darmstadt. 



