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Corycaeus venustus I. C. Thompson, 1900. p. 290. 



Corycaeus venustus A. Scott, 1902, p. 420. 



Corycaeus venustus I. C. Thompson, 1903, p. 35. 



Corycaeus venustus Thompson & Scott, 1903, p. 285. 



Corycaeus venustus Cleve, 1903, p. 362. 



Corycaeus venustus Wolfcnden, 1905 («), p. 1026. 



Corycaeus venustus Esterly, 1905, p. 225, fig. 61. 



Corycaeus venustus Pearson, 1906, p. 34. 



Corycaeus venustus van Breemen, 1908, p. 200, fig. 213. 



This species although widely distributed in the area appeared to be rather rare. It was 

 found in the plankton collected at the following fifteen stations. 



Stat. 47''. — Stat. 50. — Stat. 75 (HENSEN vertical net, 11 metres to surface). — Stat. 93. — 

 Stat. 101. — Stat. 118 (HENSEN vertical net, 700 metres to surface). — Stat. 125. — 

 Stat. 141 (HENSEN vertical net, 1500 metres to surface). — Stat. 185 (HENSEN vertical 

 net, 1536 metres to surface). — Stat. 203 (HENSEN vertical net, 1500 metres to surface). — 

 Stat. 205. -- Stat. 213. — Stat. 217 (horizontal cylinder). - Stat. 220 (Hensen vertical 

 net, 200 metres to surface). — Stat. 229. 



Corycaeus venustus resembles Corycaeus tenuis in general appearance, except that it is 

 more robust. The abdomen is composed of two segments. The furcal joints are slightly lono-er 

 than the anal segment. 



This species appears to be widely distributed in the Atlantic, Indian and Pacific Oceans. 

 It has also been recorded from the Mediterranean. 



43. Family Sapphirinidae. 

 Genus Sapphirina J- V. Thompson, 1829. 



The members of this genus are easily recognised by the semi-transparent, ovate or sub- 

 ovate depressed body, by the comparatively short lamelliform furcal joints, and by the presence 

 of a pair of eyedenses on the frontal margin of the cephalic segment. 



Fifteen species belonging to this genus we r e represented in the plankton collected 

 during the investigations of the 'Siboga', in the Majay Archipelago. One of the species does 

 not appear to have previously been described. 



1 . Sappliirina angusta Dana. 



Sapphirina angusta Dana, 1849, p. 41. 



Sapphirina angusta Dana, 1S52, p. 1240, pi. 87. 



Sapphirina angusta Giesbrecht, 1893, p. 619, pis. 52, 53 & 54. 



Sapphirina angusta Giesbrecht, 1S95, p. 261. 



Sapphirina angusta Cleve, 1903, p. 368. 



Sapphirina angusta Cleve 1904, p. 196. 



Sapphirina angusta Esterly, 1905, p. 221, fig. 58. 



One specimen of the above species was found in the plankton collected at each of the 

 following nine stations. 



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