1 62 TUCKERMAN: [Vol. IV. 



width, and led into a large, irregular shaped cavity or recess, 

 0.55 mm. in depth and i mm. in diameter. The walls of the 

 recess are not very thick and are lined with stratified epi- 

 thelium, resembling in the main that of the adjacent lingual 

 surface. From the floor of the recess rise two ridges, which 

 largely fill it. The larger of the two measures 0.40 mm. in 

 diameter and 0.45 mm. in height. Serous glands are fairly 

 abundant, and their ducts open into the spaces between the 

 ridges, and also at the sides of the recess towards its deeper 

 part. The ridges bear bulbs over their entire circumference. 

 Bulbs are also very irregularly scattered in the walls of the 

 cavity, and likewise occur in clusters near its mouth. They 

 are small, measuring 0.042 mm. in length and 0.024 mm. in 

 breadth. 



The fungiform papillae appeared to be of the usual mammalian 

 type, but were destitute of bulbs. The latter were likewise 

 wanting in the epiglottis. 



The Tongue of Dasypus minutus. 



This specimen had been kept in spirit, but was not in a favor- 

 able condition for minute study. 



General Description. — The organ is 33 mm. in length, 5.5 mm. 

 in breadth, and is free from the fraenum for 14 mm. The under 

 surface has the usual ridge, the upper anterior region being 

 grooved transversely. The tip was somewhat less pointed than 

 in the other Edentata examined. Although the entire tongue 

 was cut into sections, no circumvallate papillae or lateral gusta- 

 tory organs were found. It is quite probable, however, that they 

 were overlooked. The fungiform papillae are of good size, and 

 contained bulbs. In a single section of one of them I counted 

 no less than six. They measured on the average 0.039 "^"^- i^ 

 length and 0.021 mm. in breadth. Simple and compound fili- 

 form papillae were present, the former being interspersed among 

 the latter. The epiglottis was not examined. 



The Tongue of Chlamyphorns truncatus. 



I received only the anterior four-fifths of this tongue. The 

 piece measured 36 mm. in length. It had been kept in spirit, 

 and was sufficiently firm for cutting. 



