15U i;ulli;tin of the 



cud of the lamina reaches as f;xr as the canine tooth. Of the endotnr- 

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

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

 anterior border of the fii'st molar. The second endoturbinal plate arises 

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

 biconvulute. The third plate reaches as fixr as a point between the first 

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

 tlie plate to be seen anteriorly. 



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

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

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

 anterior nmrgin is concave. 



Epomophorus fiamhianus (Plate V. fig. 1). — The general plan of the 

 plates as in Ptempus. The ju-oduccd end of the transverse lamina 

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



Cijanoiderh. — The general plan of the plates as in Pternjms, The 

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

 straight (tliat is, not concave), and less oblique than in Ptcropm. 



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

 nnmlier. They are appai'cnth' the first and jiccond cndoturbinals. 

 Each plate ends anteriorly in a clavato median process or lobe. Tlie 

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

 encranial surface is of extreme simplicity. 



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

 arched, long, reaching as far as the plane of the anterior border of the fii-st 

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

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

 not advance beyond the vomerine portion of the transverse lamina. 

 The encranial surfixce is slightly inflated over the cribriform jilate. The 

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

 all raised. 



Megaih'i'ina f)'o)u {VlaiG VI. fig. 2). — The ectoturbinal absent. The 

 endoturliinals two in number, as in PJii/Uoyhlna and RhhiolopJunt. Both 

 of these possess small swollen lobes, but arc both confined within the lim- 

 its of the vomerine ])ortion of the transver.se lamina. The' lobes, as they 

 appear on the median surface, are nearly vertical. Pi'ojecting in advance 

 of the plates as far as the leA'el of the last premolar is a lobule, which 

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

 this genus it more closely resembles a septum defining the outer wall of 

 the nasal chamber. The encranial surfaces were not examined. 



