SYSTEMATIC AND BIOLOGICAL ACCOUNT 153 



The only other known and still unrecorded, catches, are of eudoxids taken by Beebe at Bermuda; 

 and of both stages taken by ' Discovery ' at Stations in the South Atlantic. These ' Discovery ' Stations 

 lay between lat. 32 S. and the Cape Verde Islands. They include some Stations (280-298) on a line 

 starting from the West Coast of Africa on the Equator and running westwards and northwards to the 

 Cape Verde Islands; and Stations on another line running up the 30 mer. from 28 30' S. lat. to the 

 Cape Verde Islands; as well as Station 81 at the same south latitude, but nearer the Cape. 



Also there has recently come to my notice a specimen of Ceratocymba dentata taken by Mr J. S. 

 Colman in 1937 during a cruise in Lord Moyne's yacht 'Rosaura' in the Guinea current. The locality 

 was 7 27' N. lat., 23 08' W. long. It was taken in a 2-m. stramin net fished from 1000 m. to the 

 surface. 



T 2. mm 



I — ' ■ I ■ 



Text-fig. 79. A, C, Ceratocymba sagittata, a posterior nectophore from 'Discovery II* St. 676; A x 3-4; C x 9-8; 

 B, D, Ceratocymba leuckartti, two views of a posterior nectophore from 'Discovery II' St. 694; B x6-5; D x 12-5. 



Polygastric stage. The lengths of the nectophores of a complete polygastric specimen from 

 'Discovery II ' Station 2635, 280-0 m., measured from either end to the notch on the dorsal side of 

 the posterior nectophore, where the ventro-basal tooth of the anterior nectophore locks the two in 

 position, are : anterior nectophore, 1 1 mm. ; posterior, 55 mm. The length of the nectosac of the 

 posterior nectophore is 45 mm. ; its diameter at the forward end is 3 mm., increasing to 4-5 mm. just 

 before the terminal bulge, which measures 5 mm. in diameter. There are nine or ten functional stem 

 groups, the terminal three of which show the growth of the eudoxid bract and two gonophores. On 

 one of the bracts, still attached to the stem, in the long hydroecial canal of the posterior nectophore, 

 can be seen the two ridges as found in the full-grown bract and shown in Text-fig. 80. The identity 

 of loose bracts is therefore established. The temperature in which Moser's type of quadrata was 

 taken at the surface on 7 November west of the Cape Verde Islands, must have been about 26 C. 



