THE 
VOYAGE OF H.M.S. CHALLENGER. 
ZOOLOGY. 
REPORT on the Stomatopoda collected by H.M.S. Challenger during the 
Years 1873-76. By W. K. Brooks, Associate Professor of Zoology 
and Director of the Marine Laboratory of the Johns Hopkins 
University, Baltimore, U.S.A. y 
INTRODUCTION. 
The Stomatopoda are restricted to shallow waters, and as the small collection which was 
brought home by the Challenger, and entrusted to me for examination, contains no 
startling novelties, my first feeling, after my preliminary examination, was disappoint- 
ment at the absence of any unfamiliar type, but this soon gave way to a feeling of excited 
interest after the discovery that the material in my hands furnished the most ample 
opportunities for tracing out, with great completeness, the phylogenetic and ontogenetic 
history of this small and compact order of Malacostraca. 
The order Stomatopoda includes about sixty species of adults, and an equal or greater 
number of larvae, from the tropical, subtropical, and temperate waters of the Atlantic, 
Pacific, and Indian Oceans. Some of the species, like Gonodactylus chiragra, range over 
the whole of this area, while others, like Squilla nepa, are distributed over the bottoms 
between the coast of Chili on the one side and the coasts of China and Africa on the other, 
or like Squilla empusa, between Rhode Island, U.S.A., and Africa. They are usually 
found in very shallow water, and, with the exception of the specimen of Squilla lepto- 
squilla taken in the trawl by the Challenger in the Celebes Seas from a depth of 1 1 5 
fathoms, and a specimen of Lysiosquilla armata which S. I. Smith found in the stomach of 
a Lopholatilus from 120 fathoms, they are all from very moderate depths, and the wide 
distribution of many of the species is undoubtedly due to the great length of them 
(ZOOL. CHALL. EXP. — PART XLV. — 1886.) 1 
> 
