1979 BONACCORSO: A PANAMANIAN BAT COMMUNITY 395


pregnant females in June, July, and August and a lactating female in
January is consistent with either pattern.

GLEANING CARNIVORE GUILD

 The fragmentary data available for this guild suggest a bimodal
pattern of seasonal polyestry for the genera Micronycteris, Trachops,
and Tonatia. The first birth pulse in these genera coincides with the
beginning of the wet season (Table 17, Wilson 1979). A pregnant and
lactating female Tonatia sylvicola captured in March provides the first
evidence that this species has two litters per year and a postpartum
estrus.
 Mimon crenulatum has a monestrous reproductive cycle (Table 17).
 Pregnancy peaks in the dry-to-wet season transition with lactation
 peaking in the early wet season. Mimon are reproductively inactive
 from September through December.
 Carollia perspicillata

 ] Nulliparous 79

 99 that have given birth
 80-
 60
 40-
 2 few data few data few data
 N=40

 90 -rm
 90-1 ]Pregnant
 S80 Lactating
 Nonreproducing
 S70-



 90-
 60
 S60-

 ,_ 50-
 z
 U
 S40-

 30



 10 -
 0 few data few data
 0-I
 J-M M-M M-J S-N
 N=12 42 7 11

 Fl(;tmI. 14.-Reproductive timing in female Carollia perspicillata.