154 r.L'LLiniN of the 



Vcspcrtilioni(l;TO. It is directed downward and forward. The lii'st endo- 

 tui'luiial is as in V. /'i(sc//s. It ivaehcs a point as I'ar as the canine tooth, 

 is slightly dei)resscd above, and presents -a uiiirormly sloping surface lat- 

 erally. Its lower edge forms the lower border of the median surface, 

 'i'he second endotnrbinal is of uniform wiilth, longer than high, and 

 e([ual in length to the free portion of the first endotnrbinal. The third 

 endotnrbinal is smaller than tlie preceding. 



AiifrozDKfs jndllihis. — Tiie etlnnoid bone in tliis genus closely resem- 

 bles that of other Vespertilionid;e. The ectoturbinal is compressed 

 mediodaterally. 



MoUosus obt^airus. — The ectoturbinal is biconvolute, slightly acu- 

 minate in front, and snbecpial 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 the ectoturbi- 

 nal. It is a])parently witlunit an tdfactorv plate, wliich bfiuu' understood 

 to be present the entire endotui-binal forms a sinnmit thereto with two 

 convolutions which make up the median and latei'al surfaces I'espectively. 

 The concavity thus opening downward receives in })art the maxillotur- 

 binal. Tlie second endotnrbinal is absent. The third and fourth ch)scly 

 resendde the same plates in the IMij-llostomiiruhe, and do not demand 

 any special description. The transverse lamina is apparently absent. 



J/. j>ert>fig. — The ectoturbinal is compressed from side to side, and is 

 one half the length df the tirst endoturbinal. Tlic first endotnrbinal is 

 acinuiuate as it is seen from tlie median surface, the i)ortion projecting in 

 advance of the third endoturbinal being slightly convex interiorly. The 

 third endoturbinnl is received in a depression on the lateral surfixcc of 

 the first, the second being absent. It in turn receives the f )urth. Both 

 these tnrbinals as seen in situ are longer than wide. 



Natalm strfnuine iis. — Tho ectoturbinal is absent. The second is slen- 

 der and acuminate, the convolutions uniting infcriorly at the anterior 

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

 endoturbinal is globose, and one third the lengtli of free portion of the 

 preceding. The fourth is exceedingly niiiuitc, being about one third the 

 length of the third. It is s<^mewhat rounded in form. 



TaphoMus (Plate VIT. figs. 2, 4). — The ectoturbinal somewhat broader 

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

 lamina dee])ly concave, completely concealing the small maxilloturbiual. 

 The uudci' poition uf the free jiortion of tlie iii'st endoturbinal is trace- 

 able as far I-xick as the eud of tlie endoturbinal series. The median as- 

 ])ect of tlie concavity not pmjected, as in most genera, but appears as a 



