REPORT ON THE COPEPODA. 121 



North Sea or the North Atlantic, it must before now have been found in some of 

 the numerous collections made in those areas. In some of the Challenger gatherings it 

 occurred very abundantly, notably in those from the Australian coasts, and especially in 

 gatherings made at night-time : — Off Cape Howe, Australia (at night) ; off Port Jackson 

 (night and day) ; between Sydney and Wellington ; off Kandavu, Fiji ; between Api and 

 Cape York ; between Arrou and Banda ; off north and south of Papua ; at several 

 Stations amongst the Philippine Islands; in lat. 13° 50' S., long. 151° 49' E. (Station 181); 

 east of Japan (Station 237); in lat. 30° 22' N., long. 154° 56' W. (Station 256); in the South 

 Pacific (December 5, 1875); in lat. 42° 43' S., long. 82° 11' W. (Station 302) ; in lat. 45° 

 31' S., long. 78° 9' W. (Station 303); in lat, 3G° 44' S., long. 46° 16' W. (Station 325); 

 in the South Atlantic, lat. 38°, from March 3 to 5, 1876 ; in lat, 9° 43' S., long. 13° 

 51' W. (Station 342); in lat, 5° 28' N., long. 14° 38' W. to lat. 9° 9' N., long. 16° 

 41' AV. (Stations 349, 350, 351), and off St. Vincent, Cape Verde (April 26, 1876). 



P achy soma, Claus. 



Packysoma punctatum, Claus. 



Pacltysoma punetatum, Claus, Die frei lebenden Copepoden (1863), p. 163, pi. xxv. figs. 6—1 1. 



One specimen thus named by Dr. von Willimoes Suhm, was taken off Zamboanga. In 

 its present condition it is incapable of accurate identification, having been mounted for 

 the microscope and a good deal distorted; but so far as I can make out, the name is pro- 

 bably correct. 



Saphirina, Thompson. 

 Saphirina, Thompson, Zoological Researches, 1829. 



Body flattened, ovate or subovate, abdomen of the female usually much narrower 

 than the cephalothorax x ; last thoracic segment, in the male, rudimentary ; fifth pair of 

 feet small, one-jointed. Swimming feet two-branched ; both branches three-jointed. 

 Anterior antennas five- or six-jointed, the second joint elongated ; posterior pediform, 

 four-jointed, clawed. Caudal stylets laminated. Males often opaline or iridescent. 

 Unpaired eye, vesiculiform. Pigment-bodies of lateral eyes styliform. 



The species belonging to this genus, though occasionally parasitic (as in Salpai), are 

 taken generally by the towing net near the surface of the sea, and a large number have 

 been described from various parts of the world, — notably from the Atlantic, Pacific, and 

 Mediterranean. In many of those points, however, which usually afford the best specific 



1 The number of abdominal segments is stated by Dana to be five or six, but the last thoracic segment is counted 

 by this author as belonging to the abdomen. 



(ZOOL. CHALL. EXP. PAP.T XXIII. 1883.) 2 16 



