south-west of Ireland. The third species, finally, Pas. viultidentata Esmark, is found in the 

 Norwegian fjords up to Malangen near Troms0, in the Skagerack, on Tampen bank in the 

 North Sea, south of the Faeroes and off the east coast of the United States. -Still another 

 species occurs on the ea.st coast of the United States, viz. Pas. princcps .S. I. Smith, a form 

 which is, however, also recorded from the Bering Sea, from off the coast of Washington and 

 that of Ecuador. Pas. Raihbunae Stebb. has been observed in the Southern Atlantic at lat. 

 48°oo'S., long. g^so'W., while Pas. Scotiae Stebb. is only known from the Weddell Sea. A 

 remarkable distribution shows Pas. aciitifrons Bate, which has been recorded not only from 

 off Port Churruca, Patagonia, but also from off south of Japan. Two other species occur in the 

 Straits of Magellan, Pas. forceps A. M.-Edw. and a form from Punta Arenas, that was referred 

 by DoFLEiN and B.\lss to Pas. aattifrons Bate, but that perhaps will j>rove to belong to 

 Pas. Faxoni Rathb. Pas. americana Faxon and Pas. magtia Faxon occur in the Gulf of Panama, 

 the former and Pas. Faxoni Rathb. also near the Galapagos Islands. The sea near Cortez 

 Bank, California, is the habitat of Pas. affinis Rathb., Pas. Corteziana Rathb. and Pas. emargmata 

 Rathb. ; the last, however, has also been taken in the Gulf of California, off Concepcion Bay ; 

 a fourth species on the coast of California is that which was referred by Miss Rathbun in 1904 

 to Pas. magna Faxon, but which is perhaps different, a fifth, finally, is Pas. pacijica Rathb., 

 which occurs sparingly from Unalaska and the Gulf of Alaska southward to the Gulf of California, 

 but which is also known from Cape Natal, South-Africa. The sea around the Hawaiian Islands 

 is inhabited by Pas. kakviensis Rathb., Pas. truncata Rathb. and Pas. flagellaia Rathb., the 

 first was taken by the "Siboga" in the Bali Sea and between Batjan and the Obi Islands. Pas. 

 cristata Bate is only known from off Matuku, Fiji Islands and Pas. amplidens Bate is the 

 second species recorded from Japan. Besides Pas. kaiwiensis Rathb. still another species of 

 this genus occurs in the Indian Archipelago, namely Pas. prophiqua, a new form, closely related 

 to Pas. Sivado (Risso), but apparently different and which was obtained by the "Siboga" 

 near the Sulu Islands; perhaps even three other species will prove to occur in these seas. The 

 most southern parts of the Indian Ocean near Kaiser Wilhelm II Land and of the Pacific near 

 the Ross Sea are inhabited by Pas. longispina Lenz; the only specimen of the former locality 

 was found in the intestines of a i>inguin, named Aptenodytes Forsteri. Besides Pas. Sivado 

 (Risso) still two other species are known from the Indian Ocean, north of the Equator, viz. 

 Pas. unispinosa W'.-Mas. and Pas. ^-llcocki W.-Mas., which are found in the Bay of Bengal 

 and the Arabian Sea. 



As regards the depths at which the species of this genus occur, it may be allowed to 

 refer to the List of the species. The greatest depth recorded is 14 10 fathoms, at which Pas. 

 Scotiae Stebb. was obtained by the Scottish National Antarctic Expedition, but this species has 

 also been captured by the vertical net from the surface to 600 fathoms. Two other forms. Pas. 

 Palhditnac Stebb. and Pas. princeps S. I. Smith, were likewise taken at considerable depths, the 

 former at 1332, the other at 1342 fathoms, but Pas. princeps occurs also at 349 fathoms. 

 The other species have been found in less deep water, as is .shown by the List; the depths 

 vary rather much, not only in different species, but even in the same; the records are, however, 

 generally too few in number to form any definite opinion on the vertical distribution. Some 



