Liomys irroratus

Abstract

FIGURE 1. Crown patterns of the upper (at top) and lower (below) premolars of Liomys irroratus (upper, KU 31174; lower, KU 31129) on left and Heteromys gaumeri (upper, KU 92146) Heteromys desmarestianus (lower, KU 71255) on right. For all teeth, anterior is to the top; for the upper premolars, lingual is to the right and for the lower premolars it is to the left. Abbreviations for the upper premolars are: EN, entostyle; HY, hypocone; ME, metacone; PA, paracone; PC, posterior cingu-lum; PR, protocone; PS, protostyle. Abbreviations for the lower premolars are: an, anteroconid; hy, hypoconid; me, metaconid; ms, mesoconid; pr, protoconid. 33.5); fundamental number of chromosomes 86; morphology of head and neck of spermatozoon similar to that of L. adspersus, but head significantly broader and neck significantly shorter; occurring from southern Oaxaca to central Costa Rica Liomys salvini Size large (greatest length of skull averaging over 34.5); fundamental number of chromosomes 84 or less; morphology of head and neck of spermatozoon similar to that of L. salvini, but head significantly narrower and neck significantly longer; occurring only in central Panama Liomys adspersus