152 BULLETIN OF THE 



der process. The lateral border of the portion in advance of the trans- 

 verse lamina extends as far as the anterior edge of the second premolar. 

 It is concave to receive the convex maxilloturbinal. The second endo- 

 tnrbinal is slightly narrower behind than in front. It is twice the size 

 of the third endoturbinal, which is snbronnded. 



Yesperus fuscus. — The ectoturbinal is as in Y. noctula, with the ex- 

 ception that it is deflected a little more outward. The first endoturbinal 

 is acuminate, with a uniformly sloping border. On the median surface 

 the plate is not visible below the second and third plates. The second 

 plate is as in V. noctula. The third is longer than wide. 



Scotophilus Temmincti. — The ectoturbinal is compressed medio-later- 

 ally, without lateral concavity, and is deflected slightly outward. It is 

 a little more than one half the length of the first endoturbinal. The 

 latter plate is much as in V. noctula. Its lateral border extends a short 

 distance beyond the ectoturbinal. The end of the free portion is a nar- 

 row point, and lies at the level of the premolar. The median surface 

 bears a general resemblance to the same part iu V. noctula. 



Vespertilio (Plate VII. fig. 6). — The encranial surface in all essential 

 features as in Vespents. The single ectoturbinal one third the length of 

 the first endoturbinal plate. As seen from above, the ectoturbinal is 

 lodged in a concavity in the lateral surface of the preceding plate. The 

 first endoturbinal is produced as far as the first premolai*. The plate is 

 of a pyriform figure as seen from above, and presents a truncate apex. 

 The portion in advance of the transverse lamina is deeply concave be- 

 low, and overlies the maxilloturbinal. The second endoturbinal is of a 

 triangular figure, with a rounded apex. It appears to be lodged, when 

 the parts are viewed superficially, on the median surface of the endotur- 

 binal series. The third endoturbinal is the smallest of the three, and is 

 continuous with the upper portion of the first endoturbinal. 



All the preceding genera of the Vespertilionida?, as contrasted with the 

 genus next to be mentioned, have the first and third endoturbinal plates 

 united above the second plate. 



Atalapka. — In A. nowiboracetuu the encranial surface presents the 

 septoturbinal foramina placed in a row along the anterior half of the 

 space of the same name. The openings of the eototurbinal surface arc 

 in a direct line with the foregoing, and both are depressed below the 

 general surface. The foramen for the first endoturbinal is seen lying at 

 the bottom of the conspicuous depression near the crista galll The 

 foramina are everywhere at the sides of the encranial surface. Seen 

 from the ne I the eototurbinal seems to he nearly the length of 



