LEOJfARDIA. 495 



This gives rise in this manner to a large hody, cylindrical in the 

 middle and attenuated at tlie two extremities. 

 r The vas deferens enters the posterior part of the penis, and is of 

 a deep i-ed (fig. IGOa^l, o, fig. 160^ h), relatively large and rather 

 long, and as usual twisted and contorted in various wavs. At the 

 opposite extremity the vas deferens enters the interior of the 

 integument near the multifid gland described above. Here the 

 integument, reduced to a very slender tube (fig, 160'^o) with a 

 diameter of little more than half a millimetre, buries itself for a 

 considerable length and descends about as far as the middle of 

 the body ; afterwards, upon emerging again, it terminates in the 

 excretory tube of a small reniform gland (fig. 160^ 7i) which enters 

 the duct of another cistiform body which is fixed in the neck of 

 the ovary, and which may be regarded as a female seminal vesicle. 

 The ovary equals in length twice that of the body, but is much 

 more slender ; this may be owing to the animal examined not 

 having probably attained full development (fig. 160*^ B p q 

 fig. 160\/). " ' ' ^ » i. 



Fig. liYl.- -Leonardia neviUiana. 

 (Copied from Ann. Miis. Civ. Genova.) 



This long ovary in its natural state, moreover, is folded upon 

 itself and apparently twisted in such a manner as to form a single 

 large body, to whicli are united the forementioned gland and the 

 albuminous gland (fig. 160^ 5, p), only the hermaphrodite gland, 

 supplied with a long duct, remaining free and directly resting 

 against the liver. 



The fact of the vas deferens being concealed for some distance 

 in this integument finds its counterpart in Limnteidaa and in 

 Oncidiidae ; the genus Leonardia must, in my opinion, be placed 



