Produced by Chris Curnow, Joseph Cooper and the Online Distributed Proofreading Team at https://www.pgdp.net UNIVERSITY OF KANSAS PUBLICATIONS MUSEUM OF NATURAL HISTORY Volume 14, No. 16, pp. 475-481, 1 fig. March 2, 1964 A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, from Western Mexico BY J. KNOX JONES, JR., AND GARY L. PHILLIPS UNIVERSITY OF KANSAS LAWRENCE 1964 UNIVERSITY OF KANSAS PUBLICATIONS, MUSEUM OF NATURAL HISTORY Editors: E. Raymond Hall, Chairman, Henry S. Fitch, Theodore H. Eaton, Jr. Volume 14, No. 16, pp. 475-481, 1 fig. Published March 2, 1964 UNIVERSITY OF KANSAS Lawrence, Kansas PRINTED BY HARRY (BUD) TIMBERLAKE, STATE PRINTER TOPEKA, KANSAS 1964 A New Subspecies of the Fruit-eating Bat, Sturnira ludovici, from Western Mexico BY J. KNOX JONES, JR., AND GARY L. PHILLIPS The fruit-eating bats of the genus _Sturnira_ are represented on the North American mainland by two species, _S. lilium_ and _S. ludovici_. The former, in most areas the smaller of the two, is widely distributed in Mexico and Central America and is common in many places. On the other hand, _S. ludovici_, described by Anthony (1924:8) from near Gualea, Ecuador, generally has been regarded as rare; insofar as we can determine only 20 specimens of the species have been recorded previously from North America (Costa Rica, Honduras, and Mexico). In 1961 (M. Raymond Lee) and 1962 (Percy L. Clifton), field representatives of the Museum of Natural History collected mammals in western Mexico. Among the bats obtained by them were 23 specimens of _S. ludovici_, which represent an heretofore undetected subspecies that is named and described below. Sturnira ludovici occidentalis, new subspecies _Holotype._--Adult female, skin and skull, no. 92798 Museum of Natural History, The University of Kansas, from Plumosas, 2500 feet elevation, Sinaloa; obtained on August 31, 1962, by Percy L. Clifton (original no. 2939). _Distribution._--Western Mexico; known certainly from south-western Durango south to southern Jalisco (see Fig. 1). _Diagnosis._--Size small both externally and cranially (forearm in adults 40.4-44.1 mm., greatest length of skull 21.7-22.9); rostrum short and abruptly elevated; skull relatively broad; dorsal pelage drab brownish over-all, usually lacking epaulets (pale yellowish brown when present); ventral pelage brownish gray. _Comparisons._--From _Sturnira ludovici ludovici_, the only other subspecies of the species, _S. l. occidentalis_ differs in averaging smaller in most external and cranial dimensions (in some measurements the upper size limits of _occidentalis_ barely overlap the lower limits in specimens of _ludovici_ examined), in having a relatively broader skull with a shorter, more abruptly elevated rostrum, and in being paler both dorsally and ventrally.