15G BULLETIN OF THE 



compressed, and reaches the plane of the anterior border of the single 

 molar. A lobnle in tlie position of the basal convolution of other I'hyl- 

 lostomines lies between the first and the tliird plates, and resembles in 

 general appearance a separate endoturbinal. Tlie second endoturbinal 

 is small and concealed. Tiie third and fourth j)lates are in general 

 appearance nuich as in other Phyllostoniines. Tlie lobes of the first and 

 third eiuloturl)inals are conspicuous. 



C<irolUa brevicauda (Plate V. figs. 3, 5). — The first ectoturbinal is 

 inflated, witli no trace of the concavity marking the plate in the ^'esper- 

 tilionid;e. It is two thirds the length of the first endoturbinal. The 

 last-named plate is narrowed anteriorly, but not acun^inate, since the tip 

 is truncate. Its lower border is concave. The lobule at the summit of 

 the plate is broader in front than behind, and equals the free portion in 

 length. The third plate is concealed. The fourth is of the same size 

 and shape as tlie foregoing. The fifth is triangular in form, open be- 

 neath, and presents the appearance of having a large lateral convolu- 

 tion etpial in length with the main plate. The maxilloturbinal is 

 rudimentary and free from the ethnioturbinal. 



Lnnchoglossn. — The general plan in this genus is as in other Phyl- 

 lostomines. The ectoturbinal is minute, compressed, not more than one 

 half the length of the first endoturbinal. The latter is tliin, straight, 

 with a long falciform lobe, which is concave inferiorly. The basal lobule 

 is well developed, and lies at the lower border of the median surface of 

 the ethmoturbinal. Tlic remaining endoturbinals as in other Phyllosto- 

 niines, but less obliquely inclined. 



PhyUustoiiKi hastatiim (Plate V. fig. 2). — The foramina of the scpto- 

 turbinal and the ectoturbinal surfaces on the cncranial aspect form a 

 continuous arch. The depression fur the main jilate is large, and the 

 space behind it is occupied by numerous openings ai'ranged without 

 apparent order. 



Schlzostoma. — Tlie ectoturbinal is moderately inflated, but less so 

 proportionally tlian in Dennami.m. The narrow and acuminate first 

 endoturbinal projects about one third of the length of the ectoturbinal. 

 Its lobule is inconspicuous. The second endoturbinal is concealed, and 

 presents a slightly inflated \\\^\^cv border. Tlic third plate possesses 

 a large anterior lobule, which is c(.)nvex forward. The parts are 

 contiguous upon the median surface. 



Macroius Watcrkouxii. — The ectoturbinal is small, a little less than 

 one half the length of tlie first (nidoturbinal. Its upper l)i)rdcr is hori- 

 zontal, and its lower concave. The extreme tii) of the lobule extends as- 



