had made of a frond of the palm, Geonoma decurrens.

Thyroptera tricolor albigula G.M. Allen.—On May 10 along the Snyder-Molino Trail 50 meters from its beginning Dr. E.R. Dunn found in a curled Heliaconia leaf a group of four bats of this species. A lactating female (No. 405 of Jackson), a young male (No. 406 of Jackson) attached to its mother's teat, and a male (No. 407 of Jackson, now 52457 K.U.) weighed, respectively, 4.8, 2.2, and 4.0 grams. The young one remained attached to the mother when she flew about the laboratory. The fourth specimen, a male, was banded and released. These bats with the aid of suction cups on their wrists and ankles hung head up in the rolled leaf and on places in the laboratory on which they alighted. This species was previously recorded (see Enders, op. cit.:421) from Barro Colorado Island, on the basis of other specimens also captured by Professor Dunn.

Myotis nigricans nigricans (Schinz).—Nos. 45089–45091 and No. 408 of Jackson. Nos. 45090 and 45091 were plucked from under the eaves of buildings, but No. 45089 was caught in the net on the evening of April 5. Jackson found this species to roost between the corrugations of the metal roof and the underlying wooden supports. He banded 14 individuals, most of which were pulled with forceps from their resting places in the old laboratory or the kitchen. All were males. Five were recaptured from one to 13 days after banding, and two were found in the places from which they originally had been plucked 13 days previously. Enders (op. cit.:421) found this species to be abundant about the laboratory where it spent the day hanging under the eaves.

Molossus coibensis J.A. Allen.—Males Nos. 45092 and 45093 weighed 13.9 and 10.0 grams. They were taken in the clearing on April 3 and 5. Enders (op. cit.:421) found this bat under the eaves of the laboratory along with Myotis nigricans.

On April 19, 1952, Dr. Harold Trapido kindly took Young, Dickenson, Hall, and Dr. and Mrs. E.R. Dunn to the Experimental Botanical Gardens at Summit in the Canal Zone where Nos. 45082–45084 of Uroderma bilobatum Peters were saved. On the same date Doctor Trapido took the five of us also to Chilibrillo Cave in Panamá 10 miles north of Pedro Miguel where specimens were saved as follows: Saccopteryx bilineata (Temminck), 45059 and 45060; Phyllostomus hastatus panamensis J.A. Allen, 45063–45072; Lonchophylla robusta Miller, 45074–45075; Carollia perspicillata azteca Saussure, 45076–45079; Natalus mexicanus saturabus Dalquest and Hall, 45088.

Transmitted July 20, 1953.

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