416 DR. M. WATSON ON THE MALE [Apr. 10, 



Fig. 5. Bhynckonella sicula (recent), p. 413. 



6. E. sicula (fossil), p. 4l4.' 



7. Discina atlantica, p. 415. 



Observation. — In the enlarged figure of Terebratula vitrea, var. sphenoidea, 

 the striae are much too strongly marked. In the figure of Discina atlantica the 

 setae are represented too thick. 



2. On the Male Generative Organs of Hyaena crocuta. By 

 M. Watson, M.D., Professor of Anatomy, Owens Col- 

 lege, Manchester. 



[Received April 5, 1878.] 



(Plates XXIV. & XXV.) 



In a previous communication ' I laid before this Society a descrip- 

 tion of the female organs of Hycena crocuta, and having lately had 

 an opportunity of examining those of an adult male of the same 

 species, have thought that a description of these would not be alto- 

 gether uninteresting, more especially as, so far as I can ascertain, no 

 complete account of them has hitherto been published. For the 

 sake of comparison I shall follow the plan pursued in the paper 

 referred to, describing in the first place the external, and secondly 

 the internal organs of generation. 



External Parts. 



The anal and perineal regions of the male resemble so closely those 

 of the female that without a very accurate examination it is impos- 

 sible to distinguish between the sexes. In both there is a well- 

 marked glandular pouch above the anus ; in both there are cutaneous 

 elevations corresponding in appearance to that of the scrotum in the 

 males of allied species ; and in both there is an elongated, pendulous, 

 penis-like body, surrounded by a prepuce, and perforated at its 

 extremity by a single aperture of small size. 



Penis. — This organ is directed forwards, and lies along the middle 

 line of the perineum as in the dog. The free portion, consisting of 

 a central glans surrounded by a thick fleshy prepuce, projects for- 

 ward and downward from the level of the abdominal wall, and 

 measures one inch and a half in length. The glans is conical in 

 form and without distinct corona, the urethral aperture being situated 

 on the apex of the cone. The inferior lip of this aperture is pro- 

 longed forward to some extent, so that seen from the side the glans 

 presents the appearance of being obliquely truncated from before 

 backward and upward as in the female, although the truncation is 

 not so well marked as in that sex. In the flaccid condition of the 

 organ the glans is for the most part concealed by the prepuce, its 

 apex only being exposed. The latter portion is of a dark blue colour, 

 and its surface is much corrugated, whilst so much of the glans as is 

 concealed by the prepuce is of a purplish colour and presents no trace 

 of corrugation. Its basal two thirds are moreover covered by small 

 ; Proc. Zool. Soc. May. 1877. 



