172 EXPEDITION OF THE "ALBATROSS," 1899-1900. 



third of the distance down from the apical sense organ. These clefts 

 extend downward along the sides of the stomach for about three-quarters 

 of the distance between the apex and the mouth. The tentacles are 

 capable of considerable expansion and contraction, and are furnished with 

 simple lateral branches. The mouth is a narrow slit at the bottom of a 

 shallow trough in the oral pole of the animal. The stomach is flat and 

 narrow and gives rise to two blindly ending lateral canals in the tentacular 

 diameter. These canals extend downward along the sides of the stomach 

 to points very near the region of the mouth. The funnel canal and 

 the radiating canals, which connect the middle points of the meridional 

 vessels with the stomach, are quite broad and straight. The tentacles 

 are milky in color, and the entoderm of the stomach is of a faint steely 

 blue. All other parts of the animal are of a glassy transparency. 



This Ctenophore was first obtained in N. lat. 28° 11', W. long. 111° 16'. 

 It became more and more abundant as we approached the Tropics, and we 

 met with swarms of them among the Paumotus Islands. 



; N. Lat, 28° 23', W. Long. 126° 57'. 

 18° 19', " 131° 57'. 



" 6° 41', " 137°. 



5° 40', " 136° 47'. 



" 4° 35', " 136° 54'. 



" 2° 38', " 137° 22'. 



Lagoon of Rangiroa Island, Paumotus Islands. 



it ft ic a " 



off south shore of Rangiroa Island. 



Cestus sp. 



Several fragments of a Cestus, the largest being about 100 mm. in length 

 and 23 mm. in width, were found by the " Albatross." 



S"; Station 14; September 7, 1899 ; N. Lat. 6° 41', W. Long. 137°. 

 S rf ; " 15; " 8, " " 4° 35', " 136° 54'. 



Beroe atlStralis Agassiz and Mayer. 



Beroe' australis Agassiz and Mayer, 1899; Bull. Mus. Comp. Zool., Vol. XXXIL, p. 177, PI. 

 16, Figs 49, 50. 



A single specimen of this Ctenophore was captured by the " Albatross." 



S'': December 23, 1899; off Funafuti, Elliee Islands. 



