98 



As a reference quantity for individual measures, a calculated volume measure - SIZE - 

 was chosen, representing the braincase. 



By allometrical comparison of tlie measures related to feeding apparatus (width of the 

 palate over the canini, palate length, upper tooth row, mandible length, height of the 

 coronoid process) the following points turned out: 



Generally, the various development of rostrum prolongation cannot be characterized by 

 distmctly distinguishable constniction principles. It is, rather, affected by the allometric 

 and integration constants wliich are established for the entire group. 

 In contrast, in the genera Choeronisciis, Hylonycteris and Choeronycteris the length of the 

 palate shows a transposition of the allometric Hne deviating from the condition of the 

 remaining Glossophaginae. This represents another principle of construction proving the 

 close relationship of all three genera. Tlie systematic separation of tlie subfamily - 

 formerly sunmiarized in a single taxon - into Glossophaginae and Lonchophyllinae 

 according to morphological criteria of the soft parts (Griffitlis 1983) is also supported by 

 the cranial data of this study (lacking zygomatic arches, incisors, mandibular shape). 

 Furthermore, the allometric data allow to classify Platalina genovensium as a large species 

 witliin the the genus Lonchophylla . 



LITERATURE CITED 

 Allen, H. (1898): On the Glossophagmae. - Trans. Amer. Philos. Soc. 19: 237-266. 

 Allen, J. A., & P.M. Chapman (1893): On a collection of mammals from the 



island of Trinidad, with description of new species. — Bull. Amer. Mus. Nat. Hist. 



13:203-234. 



Allen, G.M. (1908): Notes on Chiroptera. - Bull. Mus. Comp. Zool, Harvard Coll. 

 52:25-62. 



— (1942): Hylonycteris undenvoodi m Mexico. — J. Manmi. 23:97. 



Alvarez, T. & L. Gonzalez Q (1970): Anahsis polinico del contenido gastrico de 

 murcielagos Glossophaginae de Mexico. — An. Escuela Nac. Cienc. Biol., Mexico 

 18:137-165. 



Arata, A.A., J.B. Vaughn & M.E. Thomas (1967): Food Habits of certain 



Colombian Bats. — J. Manmi. 48:653-655. 

 Arroyo-Cabrales, J., R.R. Hollander & J. Knox Jones, Jr. (1987): 



Choeronycteris mexicana. — Manmialian Species 291:1-5. 

 Ayala, S.C. & A. D'Allessandro (1973): Insect feeding behavior of some 



Colombian fruit-eating bats. — J. Manmi. 54:266-267. 

 Baker, H.G. (1961): Tlie adaptation of flowering plants to nocturnal and crepuscular 



pollinators. — Quart. Rev. Biol., Washington 36:64-73. 

 Baker, R.J. (1967): Karyotypes of the Faniiliy Phyllostoniatidae and their taxonomic 



implications. — Southwest. Nat. 12:407-428. 

 Baker, R.J., J.K. Jones, jr. & D.C. Carter (Eds, 1976): Biology of Bats of the 



New World Family Phyllostoniatidae. Part I. — Spec. Publ., Mus. Texas Tech. Univ. 



10, 218pp. 



— — & — (Eds, 1977): Biology of Bats of the New World Family Phyllostoniatidae. Part 



11. - Spec. Publ., Mus. Texas Tech. Univ. 13, 364pp. 



