300 DR. C. F. SONNTAG ON THE ANATOMY 



a vallate triangle, but I only observed that form once in fifty-eiglit 

 cases. I give the following measwemeibts as those of my largest 

 specimen : — Total length 5-4 cm. ; length of the oral part 4-7 cm. ; 

 leno'thof the pharyngeal part '7 cm. ; width between the anterior 

 limits of the lateral organs 2-3 cm. 



The rounded apex and the lateral borders are the same as in 

 C. preiossi, and the structures mentioned on page 278 are also 

 absent. 



The Circumvallate Papillce. 



In fifty-eight examples I observed three papillary patterns 

 which are described as follows : — 



Specimen No. 1 (type present in fifty-six examples) : — There 

 are two pairs of vallate papillae, and the members of the posterior 

 pair lie close together, but their relative positions differ (text-fig. 

 25 C, D, G). The fossfe are well-marked, and those of the 

 anterior pair have recesses at their anterior and posterior poles 

 (text-fig. 25 J). The fossee of the posterior pair have no such 

 recesses. All the vallums are prominent and granular. 



Von Ebner has published an illustration of the histology of 

 the posterior papillee (14). 



Within the vallate area there are both conical and fungiform 

 papillae. 



Specimen xVo. 2 (type observed only in one case) :— Three 

 vallate papillse form an isosceles triangle, the posterior papilla of 

 which is oval. The sides are filled in by ridges of the mucosa. 

 "Within the vallate triangle there is a triangle of fungiform 

 papilla? (text-fig. 25 E). 



Sjieciraen No. 3 (occurring once) : — Five papillae form a V with 

 the apex behind. The three terminating papillae are large and 

 prominent, and the middle papillae of the limbs are small, but 

 prominent. All the fossae and vallums are well-marked, and the 

 vallate area contains V-shaped rows of fungiform papillae 

 (text-fig. 25 F). 



The Fungiform Pajnllce (text-fig. 31 A). 



The entire oral part of the dorsum is covered by fungiform 

 papillfe, but these have the usual arrangement in clusters and 

 rows. Occasionally, however, they may be absent from the centre 

 of the dorsum. They are small, but prominent, on the lateral 

 borders, and form a well-marked cluster behind the apex on the 

 inferior surface. 



Tuckerman (11) has shown that the apical papillae have well- 

 developed taste-buds. 



The Conical Papillce- (text-fig. 31 B). 

 The conical papillae have the usual arrangement, but the close 

 ao-gregation and mutual compression of the elements somewhat 

 obscure the pattern. They have one or more points which ai-e 



