e Koford 2 Myotis nigricans November 6, 1956 Frijolos Canal Zone Found in crack of rafters in Frijolos boat landing bldg. November 19, 1956. Saw one feeding under & near shed of boats, Barro Colorado Is., Canal Zone another hanging on raftin, in mid afternoon. Rhynchomus were in same shed but hard hung more proper, while M.n.n. hung against raftin. roof M.n.n. Myotis also likes corners between save, 2x4 raftin, & wall on kitchen bldging, & sometimes on S E side of Hoskins Bldg.; often on Kodak Bldg. December 5, 1956. Banded a few from attri of 1952 Lab. # 24-465 24 ? nip. slightly swollen - 25 nip. elongated but flat & flaccid - 26 nip turgid and short. 27 of forearm 22 also some ?? including 5 min.- atures (forearm about 21-30) banded same place. Forearm measurements 22, 22, 21, 24, 30 or ? 24-465 27 to 31 resp. December 23, 1956. Netted & banded ?, nipple slightly elm- gated, forearm 3 1/2; no. 24-46501; W. end of 1952 Lab. 24 February 1957 Found naked young, 40 mm. total length, on ground near 1952 Lab., alive. Gamboa Canal Zone 1 May 1957 Saw 12 ?? on sides 2"x H=10" rafters of corrug- ated iron roof, inside warehouse of Core Drilling section near golf club. Retest under corrugation of iron. Knocked down with a pole or jav., forearm 24, wt. 3 grms., one of ad., fore: 34, 4 1/2 grs., testis 4 x 2 mm.