24 REPORT ON ZOOLOGY, MDCCCXLI1I. 



simple, inter-femoral membrane truncated; incisors^. (2) Jfystacina, 

 Gray. Nose rather elongated, surrounded at the base with a row of short, 

 stiff bristles, inter-femoral membrane truncated, incisors , the upper ones 

 large. (3) Aello. Head sub-conical, inter-femoral membrane wide, truncated, 

 tail elongated, with a band from the point, incisors | (requires further exa- 

 mination). (4) Emballonura. Nose moderately elongated, nostrils tubular, 

 inter-femoral membrane truncated, incisors %. (5) Centronycteris, Gray. 

 Nose and nostrils as in (4), inter-femoral membrane truncated, spurs very 

 strong. (6) Urocryptus. Nose and nostrils as in (4), inter-femoral membrane 

 truncated, incisors '-. (7) Diclidurus (/3) Head and lips as in (a), fore- 

 head with a deep depression. (S) Tapliozous. (y) Head conical, forehead 

 simple, lips large, hanging, verrucose. (9) Noctilio. (S) Head conical, nose 

 and chin furnished with membranous '.folds. (10) Pliyllodia, Gray. Nose 

 truncated, border sharp, with a fleshy foliaceous process superiorly ; nostrils 

 beneath, chin with transverse folds on the anterior margin ; ears lateral ; 

 inter-femoral membrane truncated, tail short, feet free (P. Parnellii, Jamaica). 

 (11) Chilonycteris. Nose truncated, superior border fringed, nostrils beneath ; 

 chin with two transverse folds at the anterior edge ; ears lateral, narrow, 

 pointed, with a notch in the external margin; inter-femoral membrane wide, 

 truncated, tail long. (12) Mormoops. Nose and chin furnished with compli- 

 cated membranous folds; ears large, broad, almost united; inter-femoral 

 membrane wide, truncated, feet free. 



(b) Tail projecting above the extremity of the conical, extended inter-fe- 

 moral membrane ; alar membrane affixed only in a narrow line along the 

 back. (13) Pteronotus, Gray. Ears lateral, cliin with two transverse mem- 

 branous folds (P. Daryi, Trinidad). 



(c) Tail thick, elongated, projecting above the extremity of the trans- 

 versely plicated inter-femoral membrane. (14) Myofteris? Geoff. Ears sepa- 

 rate on the sides, large; snout short, blunt ; incisors f. (15) Chiromeles. Ears 

 as in (14), snout obliquely truncated ; incisors ?. (16) N-yctl>iomns. Ears large, 

 meeting, folded downwards on the forehead ; snout obliquely truncated, lips 

 large, transversely hollowed. (17) Molossus. Ears as in (16), snout rounded, 

 lips tumid, smooth, or hairy. 



(d) ? No tail; inter-femoral membrane distinct, deeply incised, head 

 rounded ; face disfigured with cartilaginous folds, alar membrane broad (pro- 

 bably belonging to Phyllostomina?). (IS) Centurio, Gray. 



Then follows the description of Mosia nigrescens (tab. vi, fig. 2, 2 A and 

 2 B), Diclidurus, Freyreissi, and albus (tab. viii, fig. 1 and 1 A), Centurio 

 senex (tab. vii), probably not from Amboyna, but Brazil. Mystacina tuber- 

 culata has been characterized by Gray in the Appendix to Dieffenbach's 

 Travels. 



I have instituted, with diagnoses, three new species of Chilonycteris, and 

 two of Emballonura (Archiv, p. 367), and also seven species of Dysoiws, 



