154 r.L'LLHTIN' OF TUE 



Vcspertilionidfc. It is directed downward and forward. The first endo- 

 turbinal is as in V. fuscus. It reaches a point as far as the canine tooth, 

 is slightly depressed above, and presents a nniformly sloping surfocc lat- 

 erally. Its lower edge forms the lower boi'dcr of the median surfoce. 

 The second endoturbinal is of uniform width, longer than high, and 

 ecjiial in length to thy free jiortiou of tiie Hrst endotnrbinal. The third 

 endoturbinal is smaller than tiio pi-ecediug. 



AntrosoKs pallid 11!^. — The ethmoid bone in tliis genus closely I'escm- 

 l)les that of other Vespertiliunid;e. The eetoturbiual is compressed 

 medio- late rally. 



Mollosus obscums. — The ectoturbiuul is bicouvolute, slightly acu- 

 minate in front, and sul)e(iual in length to the mesoturbinal. The endo- 

 turbinal is somewhat broader in front than behind, straight on its median 

 surface, concave on its lateral surface to receive in a measure tlie eetoturbi- 

 ual. It is apparently without an olfactory plate, which being understood 

 to be present the entire endoturbinal forms a simimit thereto with two 

 convolutions which make up the median and lateral surfaces respectively. 

 The concavity thus opening downward receives in part tlie n^axillotur- 

 binal. The second endotiu'binal is absent. The third and fourth closely 

 resemble the same plates in the Phyllostomididic, and do not demand 

 any special description. The transverse lamina is appai'cntly absent. 



M. 2x'ro(is. — The eetoturbiual is compressed from side to side, and is 

 one half the length of the first endoturbinal. The first endoturbinal is 

 acuminate as it is seen from the median sui'faee, the portion projecting in 

 advance of the third endoturbinal being slightly convex inferiorly. The 

 third cndoturbinnl is received in a depression on the lateral surface of 

 the first, the second being absent. It in turn receives the fourth. Both 

 these turbiuals as seen in situ are longer than wide. 



Xatalus sframineiis. ■ — ■ The eetoturbiual is absent. The second is slen- 

 der and acuminate, the convolutions uniting inferiorly at the anterior 

 two-thirds. The lower border of the free part is straight. The third 

 endoturbinal is globose, and one third tlio length of free portion of the 

 preceding. The fourtli is exceedingly minute, being about one third the 

 length of the third. It is somewhat roimded in form. 



Ta/jhozous (Plato YII. figs. 2, 4). — The ectoturl)inal somewhat broader 

 than the first endoturbinal, but of the same length. The transverse 

 lamina deeply concave, completely concealing the small maxilloturbinal. 

 The uudi!i- ])ortion of the free ])ortion of tlie first endoturbinal is trace- 

 able as far l->ack as the end of the endoturbinal series. The median as- 

 pect of the concavity not projected, as in most genera, but appeal's as a 



