198 



DISCOVERY REPORTS 



Sub-family CANEPHORINAE, Malmgren 



Genus Terebellides, Sars 

 Terebellides minutus, Hessle. 



Hessle, 1917, p. 138, pi. i, fig. 16, text-fig. 29 a-e. 



St. 30. 16. iii. 26. West Cumberland Bay, South Georgia. 2-8 miles S 24° W of Jason Light 

 251 m. Gear DLH. Bottom: mud and stones. Six specimens. 



St. 45. 6. iv. 26. 27 miles S 85° E of Jason Light, South Georgia. 238-270 m. Gear OIL 

 Bottom: grey mud. Eight specimens. 



St. WS 62. 19. i. 27. Wilson Harbour, South Georgia. 15-45 m. Gear BTS. One specimen. 



•02m.m -1 



•Imm 



Irrmn 



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V-7 



u 



o^ 



OSTTHIflT 



a 



a. Thoracic hook. b. 



Fig. 83. Terebellides minutus. 



Modified hook of ist thoracic torus, c. Abdominal hook from in front. 

 d. Abdominal hook in profile. 



Remarks. The largest specimen measures 42 mm. in length and has 35 abdominal 

 segments. I am inclined to think that T. minutus, Hessle, and T. antarcticiis, Hessle, 

 are the same species. Both are distinguished from T. longicaudatus by having the ist 

 notopod fully developed and by the absence of lateral flaps to the anterior segments. 



Both have thoracic hooks with markedly curved necks (Fig. 83, a). The angle between 

 the shaft and the terminal section of the modified hooks of the ist neuropod (Fig. 83, b) 

 varies not only from specimen to specimen but in the individual hooks of a single torus. 



The general arrangement of the teeth of the abdominal hooks (Fig. 83, c and d) is the 

 same in both species, and in this relation I may say that under an oil immersion lens 

 the number of larger teeth in the hooks from a single abdominal pinnule appears to 

 vary between four and six. The most usual number is five teeth. 



Hessle gives the greatest recorded length for T. minutus as 35 mm. and that for 

 T. antarcticus as 65 mm. I suggest that T. minutus represents a stage in the growth of 

 T. antarcticus. T. minutus has priority. 



