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[[circled]] 12 [[/circled]]
[[underlined]]Cebus capucinus[[/underlined]],  Mar. 31, 1959, IV,


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biting and or striking at them. This BT was obviously the same as the BT I have seen before, and I got a rather better look at it this time. The corners of the mouth are drawn very far back, and up, so that the whole thing looks like a parody of a human smile. I can confirm that the teeth are [[underlined]]not[[/underlined]] prominently displayed by this pattern. This BT is obviously aggressive, and I think quite high intensity. It may be lower intensity than the Scream, or (more probably???) just more aggressive.

X eventually stopped doing this, and spent the remainder of the day apparently ignoring both the Squirrel Monkeys and A. Still uttered a few MGB's and S Trll's. Also did a lot of sitting in Hdd, usually with HL. I think that all these latter patterns may have been provoked by my presence. The HL today appeared to be accompanied by even more licking and/or biting than the HL yesterday. This would suggest that more of the grooming today was more normal, less inhibited by hostile motivation than most of the HL yesterday.

All the BT and probably all of the Hdd and HL by X today were quite silent.

Unlike yesterday, X sometimes performed HL without Hdd. It sometimes ran along a branch using the two hind legs and one front leg, keeping the hand of the other leg in front of its face [[underlined]]as it ran[[/underlined]]. 

I presume that both the Hdd and the HL are produced when the escape drive is stronger than attack. Quite possibly when the attack drive is actually almost minimal. It is possible that they could both be considered almost pure escape or alarm behavior. (Although I don't know why an animal sometimes performs Hdd, with or without HL instead of actual running escape movements, Possibly just due to external circumstances. May occur when actual escape is physically