376 EMJJALLONURIU.li. 



5. Saccopterjrx plicata. 



Balantiopteryx plicata, Peters, MB. Akacl. Berl. 1867, p. 476. 



Nostrils more like those of Taphozous than the preceding species ; 

 apertures directed slightly outwards, no furrow or groove between 

 them above. Inner margin of the ear-conch straight, tip shortly 

 rounded off ; outer margin straight or slightly convex, scarcely con- 

 cave opposite the base of the tragus, terminating on a level with the 

 angle of the mouth directly below the posterior margin of the eye : 

 tragus straight, outer margin slightly convex, with a projecting 

 tooth near its base ; inner margin straight, tip narrowly rounded off 

 or obtusely pointed. 



Wing-sac in the centre of the antebrachial membrane, opening 

 directed inwards and upwards ; quite rudimentary in females. 



Wings from the ankles ; interfemoral membrane concave between 

 the extremities of the calcanea. 



Fur dark brown above, paler beneath ; volar membranes dark 

 brown, the wing-membrane margined with a narrow white line ex- 

 tending from the ankles to the extremity of the fourth finger. 

 Above, the fur of the body extends upon the wing-membrane as far 

 as a line drawn from the middle of the humerus to the distal third 

 of the femur, and fine short hairs clothe the upper surface of the 

 interfemoral as far as the end of the tail, and on the inferior sur- 

 face are arranged along the transverse lines with which it is marked. 



Teeth as in S. canina. 



Length (of the type specimen, an adult c?), head and body l"-8, 

 tail 0"-7, ear 0"-55, tragus 0"-2, forearm l"-7, thumb 0"-28 ; third 

 finger — metacarp. 1""4, 1st ph. 0"'45, 2nd ph. 0"'65 ; fiith finger 

 l"-7, tibia 0"-7, foot 0"-35. 



Hah. Costa Rica (Puntarenas). 



Type in the collection of the Berlin Museum. 



6. Saccopteryx calcarata. 



Vespertilio calcaratus, Wied, Schinz, Thierreich, i . p. 180 (1821) ; Wied, 

 Beitr. zitr Naturc/esch. Brasil. Bd. ii. p. 269 (1826). 



Centronycteris calcarata, Gray, Mag. Zool. ^ Bot. ii. p. 499 (1838) 

 {not Vol/, of the ' Sulphur') ; Peters, MB. Akad. Berl. 1867, p. 478, 

 1872, p. 702. 



Ears somewhat longer than the head, narrowed above ; outer 

 margin of the ear-conch with two emarginations, a larger one in 



tibia 0"'6, foot 0"'3, skull 0"'6, tooth-row 0"-2.5, distance between the upper 

 canines 0"'12. 



Hab. Brazil. 



The above description is taken from Dr. Peters's notes on the type of this 

 species, which is preserved in the Vienna Museum. The type consists of a single 

 badly-preserved female specimen, so that it is quite uncertain whether a wing 

 sac exists in the male or not. As this species, however, agrees in most respects 

 with the species of the genus Saccopteryx. I prefer to consider it a member of 

 that genus. 



