140 TRUE LATERAL HERMAPHRODITISM IN A PIG WITH FUNCTIONAL OVARY. 



the uterus, which gradually thinned down to an almost linear dimension, losing its 

 lumen, and finally ending in the connective tissue over the epididymis (fig. 1). 



On the left side, in place of an ovary there was a mass 30 by 25 by 20 mm. in 

 diameter, of dull flesh-color, exactly resembling a testis in form, texture, and color. 

 It was covered by a thick capsule in which large and somewhat tortuous vessels 

 coursed; when this tunic was incised the contents bulged over the cut edges. The 

 exposed surface was dry and granular in appearance. 



On this side of the uterus there was a well-defined Wolffian duct, such as is 

 occasionally present in sows, beginning in the vagina and running parallel to the 

 uterine horn between the layers of the broad ligament. However, instead of ending 

 in a cul-de-sac or in a series of minute cysts in the region of the ovarian pedicle, as 

 this duct usually does when present in the sow, it became greatly convoluted as it 

 approached the tip of the cornu and finally so closely coiled as to form the body 

 indicated in figure 1. This structure presented the appearance of an epididymis 

 by reason of its texture, its close apposition to the testis-like body, and also because 

 of a slight constriction at the middle portion, suggesting a division into globus 



major and minor. 



Microscopic examination fully confirmed the foregoing interpretation and 

 proved that the specimen was indeed one of true lateral hermaphroditism. Sec- 

 tions of the testis (figs. 2 and 3) showed a typical tunica albuginea, within which 

 the gland substance consisted of tubules separated by relatively wide groups of 

 interstitial cells of normal appearance, in whose nuclei mitotic figures were occa- 

 sionally found. The tubules were lined by a layer of high cells, nowhere more than 

 one cell deep, except that here and there a nucleus lay farther from the basal margin 

 than the others. The nuclei were of medium size and contained relatively less 

 chromatin than those of the interstitial cells. No mitoses could be found. The 

 cytoplasm toward the free border was frayed out into long irregular strands which 

 were so interlaced that the lumina of the tubules seemed in most places to be filled 

 by this vague network of protoplasmic material. Within the cell-bodies of this 

 epithelial lining there were numerous large vacuoles. Germ-cells were totally 

 lacking; no tubule contained any cells other than those already described, which 

 were presumably partially degenerated Sertoli cells. The connective tissue of the 

 testis was normal in appearance, showing no sign of the hyaline degeneration which 

 has sometimes been seen in hermaphrodite glands. The epididymis (fig. 4) was 

 similar in all respects to that of a normal male animal except that it contained no 

 spermatozoa. 



In order to gain a general view of the ovary it was cut into six blocks and sec- 

 tions were taken from each of these portions; these presented everywhere the his- 

 tological structure of a normally functioning organ (fig. 5) . The corpora lutea were 

 recently formed, with the membrana propria broken down and the elements of the 

 theca interna just beginning to invade the granulosa, indicating that ovulation had 

 taken place about three days before. (For grounds for this estimate, see Corner, 

 1919.) This finding is, of course, in accord with the presence of an ovum in the 



