75 



CRUSTACEA; 



PART I.-DECAPODA. 



BY L. A. BORRADAILE, M.A., 



Fellow, Bean and Lecturer of Selimjn College, Gamhridge ; Lecturer in Zoology in the Unwersity. 

 WITH SIXTEEN FIGURES IN THE TEXT. 



PAGE 



to 



I. — Introduction ••••...... 75 



n. — Descriptions of Species •■•..... 79 



Index .........._ IQ9 



I.— INTRODUCTION. 



The species of Deeapoda obtained by the " Terra Nova " number 46 in all, and are 

 distributed pretty evenly tliroughout tlie taxonomic divisions of the order. Accordins; 

 to the localities in which they were taken, they fall into five groups : 



(1) Antarctic. 



(2) From New Zealand and the neighbouring waters. 



(3) From Melbourne Harbour (a single species). 



(4) From between Rio de Janeiro and South Trinidad Island. 



(5) Pelagic species from the tropical and sub-tropical Atlantic. 



(1) The Antarctic species were : 



Pasipliaea longispina, Lenz and Strunck, 1914. 

 Chorismus antarcticus (Pfeffer), 1887. 



Crangon [Notocrayigon) antarcticus, Pfeffer, 1887, var. gracilis, n. 

 All were taken in the Ross Sea. 



* In sending to the press this paper and that which follows it, I wish to acknowledge very heartily 

 the courtesy of the authorities of the British Museum (Natural History), who have afforded me facilities 

 for doing at the Museum a good deal of the work which the examination of the " Terra Nova " collection 

 has involved. In particular I am indebted to Dr. W. T. Caiman for the readiness with which he has 

 placed at my disposal not only the collections under his charge, but also his own time and knowledge. 

 Miss G. M. Woodward's excellent illustrations owe much to the assistance which she has received 

 from Dr. Caiman in their preparation. 



M 



