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. 

 4L3° 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 

 niunber 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 Globigerma 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 serpuhds. 



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 hght 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 specunens 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 Globigerma ooze. Bottom temp. 37.2° F. Several tubes 

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



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

 considerable variation in the du-ection of the teeth of the stout hooked setae. 

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



