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THE 



VOYAGE OF H.M.S. CHALLENOEE. 



ZOOLOGY. -1-7 



KEPORT 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. 



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 Intban 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 Uke 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 115 

 fathoms, and a specimen of Lysiosquilla armata which S. I. Smith found in the stomach of 

 & 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 their 



(ZOOL. CHALL. EXP. — PART XLV. — 1886.) Yy 1 



