Measurements.—External measurements (all taken from specimens preserved in alcohol) of the holotype, followed by those of two other females, one from Laguna La Deseada, San Cristóbal, Pinar del Río Province, and the other from Bayate, Guantánamo, Oriente Province, are, respectively: Total length, 164, 161, 150; length of tail-vertebrae, 68, 76, 77; length of hind foot, 12, 12, 13; length of ear from notch, 20, 17, 19; length of forearm, 61.2, 62.6, 61.8. The length of forearm of a study skin from San Germán (that otherwise lacks external measurements) having wings spread is approximately 55.4. For cranial measurements see Table 1.

Remarks.—Four of the five specimens on which the name L. i. insularis is based differ to such a degree from mainland populations of the species L. intermedius that specific rather than subspecific recognition for the Cuban bat might seem warranted. It is because of the fifth specimen (USNM 254714) that we accord subspecific rank to insularis. It is smaller than the other Cuban specimens and except for longer condylocanine length, longer mandibular tooth-rows, narrower interorbital region, and heavier dentition is indistinguishable in measurements from the largest specimens of L. i. intermedius from the mainland. In addition, it appears not to have the enormously developed sagittal crest of the other specimens of insularis although posteriorly the dorsal part of the skull (where the crest is most prominent) is missing. USNM 254714 agrees with the other Cuban specimens in having the mesostyle of M1 and M2 somewhat reduced and in having a small M3 on which the cingulum and second commissure are poorly developed, and this specimen is regarded as representative of the lower size limits of the Cuban population.

The skull from San Bias was found in an owl pellet (see de Beaufort, 1934:316).

Table 1.—Cranial Measurements (in Millimeters) of Three Subspecies of Lasiurus intermedius