Comic Title: Adventure Comics #245
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: February 1958
Approx. On Sale Date: December 31, 1957 Copyright Date December 29, 1957
Source: Library of Congress, Periodicals 1958
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly
Cover Price: $0.10
Page Count: 32
Editor: Mort Weisinger

Title: "The Mystery of Monster X"
Pages: 12

Feature(s):
Superboy (of Earth-1)

Writer: Otto Binder
Artist: Al Plastino

Reprinted In:
80 Page Giant Magazine #6 (1965)

Feature Character(s)

• Superboy (last appearance in Adventure Comics #244; next appearance in Superboy #63)

Supporting Character(s)

• Lana Lang (last appearance in Adventure Comics #244; next appearance in Superboy #63)
• Lewis Lang (last appearance in Superboy #62; next appearance in Superboy #66)

Villain(s)

• A super-bug (no further appearances)
• The Thinker and his henchmen (no further appearances)

Synopsis:
A volcanic eruption releases a giant flying centipede from hibernation. The bug is mistaken as a movie hoax at first, but Superboy soon discovers that it presents a danger to the world. Each of the monster’s legs transforms elements into a different form including Kryptonite. Eventually Superboy discovers that the creature is a mother looking for its egg. The Boy of Steel locates it and takes mother and child to another planet.