316 THE ANNELIDA POLYCHAETA. 



Localities. Peru: off Aguja Point. Sta. 4653 (lat. 5° 47' S., long. 81° 24' 

 W.). Depth 536 fms. Bottom of dark brown volcanic mud. Bottom temp. 

 41.3° F. 12 November, 1904. Numerous specimens. 



Off Panama: Sta. 3353 (lat. 7° 06' 15" N., long. 80° 34' W.). Depth 

 695 fms. Bottom of green mud. Bottom temp. 39° F. 10 March, 1891. A 

 number of specimens of large size. 



Off Panama: Sta. 3356 (lat. 7° 09' 30" N., long. 81° 08' 30" W.). Depth 

 546 fms. Bottom of soft black mud. Bottom temp. 40.1° F. 23 February, 

 1891. Seven specimens. 



Off Panama: Sta. 3362 (lat. 5° 56' N., long. 85° 10' 30" W.). Depth 

 1,175 fms. Bottom of green mud, and sand, with rock. Bottom temp. 36.8° F. 

 20 February, 1891. Fifteen poorly preserved specimens. 



Off Panama: Sta. 3366 (lat. 5° 30' N., long. 86° 45' W.). Depth 1,067 

 fms. Bottom of yellow Globigerina ooze. Bottom temp. 37° F. 27 February, 

 1891. Three tubes. 



Off Panama: Sta. 3392 (lat. 7° 05' 30" N., long. 79° 40' W.). Depth 

 1,270 fms. Bottom temp. 36.4° F. Bottom hard. 10 March, 1891. Many 

 tubes of which a considerable proportion contain animals. Tubes of small and 

 intermediate sizes. To some are attached small actinarians, barnacles, and 

 tubes of serpulids. 



Off Panama: Sta. 3393 (lat. 7° 15' N., long. 79° 36' W.). Depth 1,020 fms. 

 Bottom of green mud. Bottom temp. 36.8° F. 10 March, 1891. A number of 

 tubes of varying size, mostly empty. 



Off Galapagos Islands: Sta. 3400 (lat. 0° 36' N., long. 86° 46' W.). Depth 

 1,322 fms. Bottom of light grey Globigerina ooze. Bottom temp. 36.1° F. 

 27 March, 1891. Several tubes of large size containing badly preserved frag- 

 ments of animals. The dentate spines of posterior somites appear somewhat 

 more slender and curved, with the terminal teeth at a greater average angle 

 with the axis of the shaft than in the specimens from the shallower depths off 

 Panama. 



Off Galapagos Islands: Sta. 3407 (lat. 0° 04' S., long. 90° 24' 30" W.). Depth 

 885 fms. Bottom of Globigerina ooze. Bottom temp. 37.2° F. Several tubes 

 like those from Sta. 3400. 3 April, 1891. 



The above agree with specimens from the Atlantic. There seems to be 

 considerable variation in the direction of the teeth of the stout hooked setae. 

 In the material from off Panama many of these setae have the terminal teeth 



