Exploration of the Red River of Louisiana, in the year 1852 / by Randolph B. Marcy ; assisted by George B. McClellan. Page: 259 of 368
The following text was automatically extracted from the image on this page using optical character recognition software:
BY CHARLES GIRARD.
1. SCOLOPENDRA HEROS, Girard.
ZOOLOGY, PI. XVIII.
SPEC. CHAR.-Twenty-one pairs of grallatory appendages, composed
of five segments or articulations, and a conical terminal spine, more or
less curved. Back bicarinated; beneath, flat and grooved. Antennla
composed of twenty-five joints; color uniform dark-reddish brown;
DESCRIPTION.-The general form of the body is depressed, subconcave
above, flat beneath. It is composed of twenty-one annuli, segments
or rings, each of which bears one pair of locomotory appendages,
(feet.) The middle region of the back presents a slight double carina
and last segment. The intermediate area is rather flattened, whilst each
running parallel the whole length of the body, very faint on the first
side, is gently sloping towards the exterior margin. At the inferior
surface, two longitudinal furrows or grooves may be seen extending the
whole length of the body, and dividing the abdominal disk into three
almost equal parts. The stigmata are transversely elongated, and
situated immediately beneathl the lateral margin of the dorsal shields of
each segment. The insertion of the locomotory appendages takes
place immediately above the lateral margin of the abdominal shields of
each segment. The locomotory appendages are as numerous as the
segments of the body-twenty-one pairs constructed alike; that is to say,
composed of five joints and a curved terminal spine. A minute spine
may occasionally be seen at the anterior margin of the fourth and fifth
joints. The third and fourth joints are longer than the first and
second; the fifth is always the smallest: these organs are tapering
rapidly towards their extremity. In the caudal pair, the first and second
articles or joints are longer than the third and fourth; the first one is,
moreover, provided with a spiny process along its inner margin. Its
general shape and directing distinguishes it, likewise, from all the other
Here’s what’s next.
This book can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Book.
Marcy, Randolph Barnes. Exploration of the Red River of Louisiana, in the year 1852 / by Randolph B. Marcy ; assisted by George B. McClellan., book, 1854; Washington, DC. (https://texashistory.unt.edu/ark:/67531/metapth6105/m1/259/: accessed May 21, 2022), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; .