150 i;ulli:tl\ of tiii-: 



cud iif the lamina reaches as far as the canine tooth. Of the cndotnr- 

 binal plates tlicniselvos it may bo said that the first cndoturbinal plate 

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

 anterior border of the iirst molar. The second endotnrbinal plate arises 

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



C//oii_//r(cr[6. — The general plan of the plates is the same as in Ptcro- 

 2ia!<. The median vertical as[)ect of tlie concavity of the transverse 

 lamina is one fomth the length of the second endotnrbinal plate. The 

 anterior nuirgin is concnve. 



Epomoplinntu r/nmbianus (Plate Y. fig. 1). — The general plan of the 

 plates as in Pteropu!<. The protlaced end of the transverse lamina 

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



CijanojAerls. — The general plan 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 oblique than in Pternpna. 



PlujJbxrldna ^r/c/c//.s- (Tlate VI. tig. 5).- — The olfactory pilatcs two in 

 number. They arc apparently the iirst and second cndoturbinals. 

 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. 



Pldnolophus ferro-cquinum (Plate VI. fig. 4). — The first cctoturliinal 

 arched, long, reacliing as far as tiie [)laue of the anterior border of the first 

 molar. The first and second cndoturbinals arc 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 surfac(i is slightly inflated over the cribriform plate. The 

 ectoturbiual space is absent. Tlic non-})erforate space is scarcely at 

 all I'aised. 



Ife/yadcnnr/ /runs [Vhiio VI. fig. 2). — The ectoturbiual absent. The 

 cndoturbinals two in numl)cr, as in J'ln/llorliiua and IlliinolDplLiis. Both 

 of these possess small swollen lol)cs, but ai'c l)oth confined within the lim- 

 its of the vomci'ine ]inrtion of the transverse lamina. The" lobes, as they 

 appear on the median surface, are nearly vertical. Projecting in advance 

 of the plates as far as the level of tlie 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. 



