249 



Until at present only four species of Crangonidae were known to occur in the Indian 

 Archipelago, tvvo of the genus Pontophilus (Challengeri Ortm. and junceus Bate) and two of the 

 o^enus Aegeon (pennala Bate and propensalata Bate). Thanks to the remarkable investigations 

 of the Siboga expedition the number of Crangonidae, observed in the Archipelago, has increased 

 to no less than 15 species and 3 varieties ! Eight species and one variety, indeed, of Pontophilus, 

 five species and two varieties of Aegeon, one species of Prionocrangon and, last though not 

 least, one species of the genus Sabinea are now known to inhabit the Archipelago. The genus 

 Sabinea was not yet known to occur in the Indopacific, the discovered species is new to science 

 and differs rather much from the older representatives of this group; of the genus Pontophilus 

 three species and one variety, of the genus Aegeon one species and two varieties proved to 

 be still unknown. 



< )f Crangon crangon (Linn.) a variety has been recorded from Akyab, Arakan coast 

 (Stanley Kemp, 1. c, 1916, p. 379): this form will perhaps once prove to occur also off the 

 coast of Sumatra. 



LIST OF ALL THE SPECIES OF CRANGONIDAE, KNOWN AT PRESENT, 



JüNE 191 8. 



SPECIES 



HABITAT 



DEPTH IN 1ATH0MS 



abyssorum Rathb. 1902 



acclivis Rathb. 1902 



affinis de Haan 1849 



alaskensis Lock. 1876 



alaskensis elongata Rathb. 190: 



alba Holmes 1900 



Allntanni Kinahan 1857 . . . . 



capensis Stimps. 1S60 



SIDOGA-EXI'EDITIE XXXIX </ : '. 



I. Genus Crangon Fabr. 1798. 

 Subgenus Crangon Fabr. 1798. 



From Bering Sea to the southern extremity of California 



Off the Trinity Islands, Alaska 



The islands situated off the coast of southern California 



Petropawlowsk 



Wladiwostok 



Japan, from Taraku Island (Nemuro) to Kagoshima 



and Nagasaki 

 Puget Sound 

 Off Kurile Islands 



Bering Sea and along the Aleutian Islands 

 British Columbia southward to Puget Sound 

 Off the west coast of the United States from off British 



Columbia as far south as Wilmington, Cal. 

 From Vancouver Island, British Columbia, to San 



Diego, California 

 North East Atlantic from the White Sea and the 



Murman coast along the whole coast of Norway 



and Great Britain, the North Sea, to the north 



side of the Bay of Biscay 



Iceland 



Skagerrak, Kattegat, Samsobelt, O'esund 

 Cape of Good Hope 



085 — 1771 



159 

 80—266 



'4 



3' 4— 4i 



5-81 



9—278 



22—47 



In the North Sea 



9—69 



Irish Sea 20 — 73 



On the north side 



of the Bay of 



Biscay 146 



12 



