660 OS THE rEOGEIJlrAL OECIANS OF THE KAyOAEOO, 



ones 3 in. and 5 in. respectively, wliile of tlie third I know only 

 that she was not a virgin. The organs, from the distal portion 

 of the Fallopian tubes to the vulva measure 2| in. in a straight 

 line. The most striking feature about them is the shortness and 

 consequently ver}^ slight arching of the lateral canals. When 

 these are dissected away from the sides of the median vagina, to 

 which they are closely bound by connective tissue, their length 

 does not exceed that of the straight piece of median vagina inter- 

 vening between their anterior and posterior extremities, by more 

 than ij in. They are very much shorter even relatively than is 

 the case in any other species described in this paper, and more 

 like the specimen of DenJrolafjiis imisfus, figured on p. 980 of the 

 P.Z.S. for 1881. Their diameter is very uniform and does not 

 exceed iV in. 



In each of the four specimens there is a direct communication 

 Ijetween the median vaginal and the urogenital canals. Its orifice 

 is well marked and has the usual situation. The urogenital canal 

 measures Is in. in length, that is not much shorter than is the 

 case in an average specimen of M. major, even considering the 

 disparity in size of the animals. It shows substantially the same 

 arrangement of conspicuous ridges as in the previously described 

 species, though in one specimen they are very broad and more 

 massive altogether than usual, and in two specimens they do not 

 very sensibly diminish in size throughout and become fused in 

 the last i in. of their course, though a slight superficial depress- 

 ion still shews their originally double character. In one case 

 the median ridge at a \ in. from its anterior end fuses posteriorly 

 with one of the main ridges. There are traces of secondary 

 ridges but these are irregular and not very conspicuous. 



There ia no doubt about the continuity of the tissues of the 

 median vagina and the urogenital canal, and externally one looks 

 like a continuation of the other. The walls of the former are 

 thick and firm and give it a circular outline. It is broadest 

 anteriorly just in the region of the origin of the lateral canals 



