150 BULLETIN OF THE 



end of the lamina reaches as far as the canine tooth. Of the endotur- 

 binal plates themselves it may be said that the first endoturbinal plate 

 is nearly simple, and reaches the transverse lamina at the plane of the 

 anterior border of the first molar. The second endoturbinal plate arises 

 in common with the preceding, and ends at the same point. It is 

 biconvolute. The third plate reaches as far as a point between the first 

 and second molars. It is convolute, but permits a small portion of 

 the plate to be seen anteriorly. 



Cyonycteris. — The general plan of the plates is the same as in Ptero- 

 pus. The median vertical aspect of the concavity of the transverse 

 lamina is one fourth the length of the second endoturbinal plate. The 

 anterior margin is concave. 



Epomophorw gombiaaus (Plate Y. fig. 1). — The general plan of the 

 plates as in Pteropus. The produced end of the transverse lamina 

 reaches the plane of the anterior edge of the second premolar. 



Cyanopteris. — The general plau of the plates as in Pteropus. The 

 anterior margin of the median vertical aspect of the transverse lamina is 

 straight (that is, not concave), and less oblicpie than in Pteropus. 



Phyllorhina tridens (Plate VI. fig. 5). — The olfactory plates two in 

 number. They are apparently the first and second endoturbinals. 

 Each plate ends anteriorly in a clavate median process or lobe. The 

 two are separate from each other, and nearly vertical in position. The 

 encranial surface is of extreme simplicity. 



Rhinolophus ferro-equinum (Plate VI. fig. 4). — The first ectoturbinal 

 arched, long, reaching as far as the plane of the anterior border of the first 

 molar. The first and second endoturbinals are horizontal, simple, not 

 contiguous. They are without lobes, and arc non-convolute. They do 

 not advance beyond the vomerine portion of the transverse lamina. 

 The encranial surface is slightly inflated over the cribriform plate. The 

 ectoturbinal space is absent. The non-perforatc space is scarcely at 

 all raised. 



Megaderma frons (Plate VI. fig. 2). — The ectoturbinal absent. The 

 endoturbinals two in number, as in Phyllorhina and Rhinolophus. Both 

 of the-' possess small swollen lobes, but are both Confined within the lim- 

 its of the vomerine portion of the transverse lamina. The lobes, as they 

 appeal On the median surface, are nearly vertical. Projecting in advance 

 of the plates as far as the level of the last premolar is a lobule, which 

 may be said to represent the produced transverse lamina, although in 

 this genus it more cl enables a septum defining the outer wall of 



the nasal chamber. The encranial surfaces were Dot examined. 



