766 THE VOYAGE OF H.M.S. CHALLENGER. 



Length, entire, ...... 



„ of carapace, ..... 



,, of rostrum, ..... 



„ of pleon, ...... 



„ of third somite of pleon, including tooth (10 mm.), 



„ of sixth somite of pleon, .... 



,, of telson, ...... 



Habitat.— Station 174c, August 3, 1874; lat. 19° 7' 50" S., long. 178° 19' 35' E.; 

 off Kandavu, Fiji Islands ; depth, 610 fathoms ; bottom, coral mud ; bottom temperature, 

 39°. One specimen, female. Trawled. 



Observations. — This species agrees very closely with that described by A. Milne- 

 Edwards as Oplophorus gracilirostris, taken in 118 fathoms off the Island of St. Domingo 

 in the West Indies, but as the author is silent upon what appears to be a distinguishing 

 feature of this species, namely, the inferior margin of the first somite of the pleon being 

 produced to a point or tooth, I think that this specimen is very probably different from 

 that found in the West Indies, but a wonderfully close representative of it at the antipodes. 



There is only one specimen in the collection, and it has been attacked by a parasite 

 that is attached to the pleon, and fills the ventral space from the first to the third somite 

 with a number of small egg-like bodies united in strings, end to end, increasing in 

 size as they proceed, which will be reported on by Dr. Hoek in the Appendix. 



Oplophorus brevirostris, n. sp. (PL CXXVII. fig. 3). 



Rostrum short, about two-thirds the length of the carapace, armed on the upper 

 surface with eight small teeth and seven on the lower ; postero-inferior angle of the 

 carapace having the tooth directed outwards and forwards, and having the scaphocerite 

 longer than the rostrum. 



First somite of the pleon having the antero-inferior margin of the carapace excavate 

 but not inferiorly produced to a point or tooth ; the teeth on the pleon are parallel with 

 the dorsal surface when extended. In most other points this species agrees with 

 Oplophorus typus. 



Length, entire, ...... 40 mm. (1*5 in.). 



„ of carapace, . . . . 14 „ 



,, of rostrum, . . . . . 8 ,, 



,, of pleon, . . . . . . 26 ,, 



,, of third somite of pleon, including tooth (5 - 5 mm.), 10 „ 



,, of sixth somite of pleon, . . . . 4 „ 



„ of telson, . . . . . . 9 „ 



Habitat— Station 207, January 16, 1875; lat. 12° 21' N., long. 122° 15' E.; off 

 Tablas Island; depth, 700 fathoms; bottom, blue mud; bottom temperature, 51 0, 6. 

 One specimen. Trawled. 



