255 



This characteristic species appeared to be vcry limited in its distribution in the area 

 investigated. It was present in the plankton collected at the following six stations. 



Stat. 125 (night). — Stat. 1S5 (HENSEN vertical net, 1536 metres to surface. -- Stat. 189".- 

 Stats. 194 — 7. — Stat. 203 (HENSEN vertical net, 1500 metres to surface). -- Stat. 282. 



The furcal joints are moderately broad. The apex is rather truncate. The distal end of 

 the inner margin terminates in a small tooth. 



This species has apparently only been recorded from the Mediterranean, and from \hr. 

 Pacific Ocean. 



5. Sapphirina gastrica Giesbrecht. 



Sapphirina gastrica Giesbrecht, 1891, p. 478. 



Sapphirina gastrica Giesbrecht, 1893, p. 620, pis. 52 — 54. 



Sapphirina gastrica I. C. Thompson, 1900, p. 288. 



Sapphirina gastrica Thompson & Scott, 1903, p. 286. 



Specimens belonging to this species were found in the plankton collected at the following 

 stations in the area traversed by the 'Siboga'. 



Stat. 16. — Stat. 106. — Stat. 118 (HENSEN vertical net, 900 metres to surface). — Stat. 

 136. — Stat. 144. — Stat. 169. — Stat. 185 (HENSEN vertical net, 1536 metres to sur- 

 face). — Stat. 104. — Stat. 224. — Stat. 225. -- Stat. 276 (HENSEN vertical net, 750 

 metres to surface). 



The furcal joints are elongate ovate in shape and are about twice as long as broad. 

 The distal end of the inner margin of each joint terminates in a small tooth. 



Sapphirina gastrica has been recorded from the Indian and Pacific Oceans. 



6. Sapphirina intestinata Giesbrecht. 



Sapphirina intestinata Giesbrecht, 1891, p. 478. 



Sapphirina intestinata Giesbrecht, 1893, p. 619, pis. 52 & 54. 



Sapphirina intestinata Thompson & Scott, 1903, p. 287. 



Sapphirina intestinata Wolfenden, 1905 (tf), p. 1029. 



This Sapphirina was present in the plankton collected at the following ten stations. 



Stat. 129. — Stat. 136. — Stat. 141 (HENSEN vertical net, 1000 metres to surface). — Stat. 

 165. — Stat. 172. — Stat. 184. — Stat. 185. — Stat. 252. -- Stat. 282. 



Sapphirina intestinata is a rather small and moderately broad species. The furcal joints 

 are somewhat elongate ovate in shape and are fully twice as long as broad. The middle of 

 the outer margin is distinctly expanded. The apex is rather narrow and truncate. The inner 

 margin terminates in a small tooth. 



This species has been recorded from the Indian and Pacific Oceans. 



7. Sapphirina metallina Dana. 



Sapphirina metallina Dana, 1849, pp. 8 — 61. 

 Sapphirina metallina Dana, 1S52, p. 1242, pi. 87. 



2 55 



