249 



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

 Archipelago, two of the genus Pontophilus {Challengeri Ortni. ■m-\<\ jimceus Bate) and two of the 

 genus Aegeoti {pennaia Bate and propensalata Bate). Thanks to the remarkable investigations 

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

 to no less than 15 species and 3 varieties! Eight species and one variety, indeed, o^ Pouiop/iilus, 

 five species and two varieties of Acgcon, 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 Aegcon one species and two varieties proved to 

 be still unknown. 



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

 (Stanley Kemp, I.e., 19 16, 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, 



June 1918. 



SPECIES 



HAB1T.\T 



DEPTH IX lATHOMS 



L Genus Crangon Fabr. 179S. 

 Subgenus Crangon Fabr. 1798. 



abyssoriuii Rathb. 1902 I From Bering Sea to the southern extremity of California 



acclivis Rathb. 1902 Off the Trinity Islands, Alaska 



The islands situated off the coast of southern California 



affinis de Haan 1S49 Petropawlowsk 



Wladiwostok 



I Japan, from Taraku Island (Nemuro) to Kagoshima 

 and Nagasaki 

 Puget Sound [ 



alaskensis Lock. 1876 Oft" Kurile Islands 



Bering Sea and along the Aleutian Islands 

 British Columbia southward to Puget Sound 

 alaskensis elongata Rathb. 1902. Off the west coast of the United States from oft" British ' 



Columbia as far south as Wilmington, Cal. 



alba Holmes 1900 From Vancouver Island, British Columbia, to San 



Diego, California 



Allmanni Kinahan 1857 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 



685 — 1771 



159 

 80—266 



capensis Stimps. i860. 



Iceland 



Skagerrak, Kattegat, Samsi>belt, Oresund 



Cape of Good Hope 



14 

 ♦ 3"-4' 

 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 



SIBOC.A-EXriiDlTlli. XX.XIXk' 



