618 
THE VOYAGE OF H.M.S. CHALLENGER. 
Station's 170 
and 170a. 
Station 171. 
Animals from 
Trawl. 
of the weed in a remarkable manner. In the tow-nets were small Scilpas, soft transparent 
Pteropods, Calanids, Cypridinids, and a young Terebellid. A large Salpa and Medusa 
were in the trawl.” 
Station 171 (Sounding 294), New Zealand to Tougatabu (see Chart 27 and 
Diagram 12). 
July 15, 1874 ; lat. 28“ 33' S., long. 177° 50' W. 
Temperature of air at noon, 66 ’5 ; mean for the day, G6 C, 5. 
Temperature of water at surface, 66° - 5 ; bottom, 39 0, 5. 
Density at 60° F. at surface, 1 '02685. 
Depth, 600 fathoms ; deposit, Volcanic Mud. 
At 6.30 a.m. stopped and sounded in 600 fathoms. Put trawl over. At 9.40 a.m. 
hove up trawT with many fragments of pumice, and numerous specimens. At 10 a.m. 
made all plain sail. The carbonic acid was determined in water from the surface, and 
amounted to 41 "2 milligrammes per litre. In the course of the morning observed a large 
whale close to the ship, also a Cape pigeon, and a few white-breasted petrels. 
Distance at noon from Eooa Island, Tongatabu, 44G miles ; from La Ranee Bank, 
263 miles. Made good 85 miles. Amount of current 8 miles, direction N. 27° E. 
The following species are recorded in the Zoological Reports from the trawl at this 
Station : — 
IIkxactineli.ida (Schulze, Zook pt. 53). 
Aulochone cylindrical , n.g., n.sp. One specimen ; obtained at no other locality. 
Alcyonaeia (Wright and Studer, Zool. pt. 64). 
Dasygorgia acanthclla, n.sp. One specimen ; obtained at no other locality. 
„ axillaris, n.sp. One specimen ; obtained also at Station 201, 82 to 
102 fathoms. 
Calyptrophora wyvillei, n.sp. Fragment of stem ; obtained at no other locality. 
Stachyodes regularis, n.g., n.sp. Several fragments ; obtained at no other locality. 
Only species of the genus. 
Tkouartlla moseleyi, n.sp. One specimen ; obtained at no other locality. 
Corals (Moseley, Zool. pt. 7). 
Stylastcr leevis, Studer (?). One dead specimen; obtained at no other locality by 
the Challenger. Recorded from Three King Islands. 
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