...The incision of the narrow urethra through the greatthickness of muscular and erectile bleeding tissue just beneath the anus isespecially an operation of extreme delicacy and difficulty... 
U.S. Department of Agriculture 「Special Report on Diseases of Cattle」
...The plume of theother varieties is erectile, but that of the San Pedrodenizen is soft and falls down the side...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...The two California species have tworound, black plumes falling gracefully over the back ofthe neck, but erectile when excited...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...Its throat is a very faintbuff, and instead of the plume of the genus Lophortyxit has a broad erectile crest with the feathers tippedwith white...
Harry Thom Payne 「Game Birds and Game Fishes of the Pacific Coast」
...Pallium: an erectile membrane partially closing theopen cavity formed by the walls of the sub-genital plate inMelanopli...
John. B. Smith 「Explanation of Terms Used in Entomology」
...4) with the same generalcharacteristics, though the crest is less prominent, here represented asa series of erectile feathers separated at their tips...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
...7) is better drawn and shows, in additionto the eye ring, the slightly erectile feathers at the back of the head...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
...The eye ring, however, seems to indicate the macaw which also hasslightly erectile feathers on the head...
Alfred M. Tozzer and Glover M. Allen 「Animal Figures in the Maya Codices」
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