362 GEOGRAPHICAL DISTRIBUTION. 



in Puget Sound, and off the southern coast of Alaska is probably accidental, 

 just as are its occurrences off the Irish coast; these occurrences are not indi- 

 cations of its normal habitat. (Fig. C.) About all we know of the north- 

 ward extension of the Tropical Pacific Siphonophore fauna is contained in Dofiein's 

 ( : 06) brief notes in his graphic account of the oceanography of the coastal waters 

 of Japan. From these we learn that Physalia, Porpita, Velella, and Forskalia, 

 with other tropical organisms, are common in Sagami Bay when its shores are 

 washed by the warm Kuro Shiro Current. But when the wind is west or north- 

 west this warm water, with its inhabitants, is driven off shore, and replaced by 

 the cold northern stream in which no Siphonophores were observed. This cold 

 water carried with it a characteristic Arctic fauna, and it would be very interest- 

 ing to know whether any of the Siphonophores known from the Arctic and Sub- 

 arctic Atlantic are at home in the Pacific also. It is clear, from Dofiein's 

 observations, that Japan is a transition region for Siphonophores, as it is for 

 Medusae. On the American coast tropical species, e. g. Sphaeronectes, have 

 been taken as far north as the Santa Barbara channel (Lat. 34° N.). 



Up to the present time we know nothing whatever about the Sipho- 

 nophore fauna of the Arctic, or Antarctic parts of the Pacific; or even whether 

 the group is represented in those regions. 



Comparison between Pacific, Malaysian, and Indian Species. 



Within recent years two very important papers on the Siphonophores of 

 the Malaysian region have appeared. These are Bedot's ('96) report on his 

 collection made at Amboina, and the extensive memoir by Lens and Van 

 Riemsdijk (: 08) based on the "Siboga" collection. These two combined give 

 the following list, leaving out a few doubtful forms, e. g. the genus Clausophyes 

 Lens and Riemsdijk. 



Sphaeronectes truncata Bassia bassensis 



Cuboides vitreus Diphyabyla hubrechti 



Praya cymbiforniis Galeolaria quadrivalvis 



Rosacea plicata Galeolaria australis 



Rosacea medusa Galeolaria monoica 



Hippopodius hippopus Diphyes appendiculata 



Abyla irigona Diphyes contorta 



Abyla haeckeli Diphyes bojani 



Abyla leuckariii Diphyes subtiloides 



Abylopsis tetragona Diphyopsis dispar 



Abylopsis eschscholtzii Diphyopsis mitra 



