460 



MERISTIC VARIATION. 



[part I. 



rarely the posterior ends of the kidneys are joined by a bridge of 

 ligamentous tissue 1 . 



A remarkable case, in which the union of the two kidneys 

 was very complete and only indications of duplicity remained, is 

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



*7 



715 



Illustrative Cases. 



To these familiar instances are added a few less generally 

 known. 



Capreolus caprea (Roebuck): specimen having the two horns 

 compounded in the middle line, forming a common beam for almost 

 the lower half of the horn (Fig. 147). This specimen was exhibited 

 among a large series of abnormal horns in the German Exhibition 

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

 Univ. Mus. 2 . 



* >v ' 



Fig. 147. A Roebuck (Capreolus caprea) Xo. 705, having the horns com- 

 pounded to form one. 



716. Limax agrestis : specimen having the upper tentacles united 

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

 Forbes and Haxley, Hist. Brit. Moll, iv. p. 288 and I. PI. JJJ, 

 fig. 4. 



1 See Gruber, Virch. Arch., 1865, xxxn. p. 111. 



The original is at Darmstadt. 



