String Theory set 10

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046. A common feature of US and European circus sideshows and carnival freak shows of the 19th and early 20th century, such as P.T. Barnum's Josephine Clofullia and Ringling Bros.' Jane Barnell.

047. The nickname of this First Lady of the United States, the title of this jazz standard [Alternative link] and the name commonly used for a member of the Coccinelidae family of beetles (this biological term derived from the Latin 'coccineus', meaning 'scarlet').

048. One of 41 species of birds in 14 genera, one of which appears on the flag of Papua New Guinea.

049. The name of this key road junction in Secunderabad, taken from that of the famous establishment in the background.

050. The title of this 1986 debut novel.

Answers
046. Bearded Lady
047. Lady Bird
048. Bird of Paradise
049. Paradise Circle
050. To be revealed later