REPORT ON THE COPEPODA. 125 



thoracic segment often shows traces of an imperfect division into two. Anterior antennae 

 six-jointed, posterior rather slender, united lengths of the last two joints about equal to 

 the second joint, claw rather long and slender. The eyes are slightly separated, the 

 pigment bodies deep violet in colour. The male is elongate-ovate in shape, the second, 

 third, and fourth joints of the abdomen are lunated, but the angles are neither mucronate 

 nor crenulated. 



Habitat.— In lat, 33° 31' S., long. 74° 43' W. (Station 299); lat, 41° 54' S., long. 

 54° 43' W. (Station 319) ; lat. 36° 9' S., long. 48° 22' W. (Station 324) ; lat. 37° 3' S., 

 long. 44° 17' W. (Station 32G) ; lat. 5° 28' N., long. 14° 38' W. (Station 349) ; lat. 7° 

 33' N., long. 15° 16' W. (Station 350) ; lat, 10° 55' N., long. 17° 4G' W. (Station 352) ; 

 between Api and Cape York ; off Port Jackson, Australia; off Sibago Island, and at other 

 Stations amongst the Philippine Islands. 



3. Saphirina reticulata, n. sp. (PI. LI. figs. 12-14). 



Male. — Length, l-10th of an inch (2'55 mm.). Shape broadly ovate, length to 

 breadth as one and three-quarters to one; forehead flattened and distinctly angulated 

 at its junction with the lateral margin, marginal angles of all the segments obtuse; 

 fourth abdominal segment lunated. Caudal lamellae scarcely twice as long as broad, 

 ovate, inner margin ending in a distinct tooth; setae equal, short, two apical and two 

 on the external margin. Anterior antennae short, composed of five nearly equal 

 joints, and bearing only a few very short setae ; posterior longer, finger about as long 

 as the second joint, and having a rather long and slender apical claw. Inner branch 

 of fourth pair of feet half the size of the outer branch. Conspicilla separate. Integu- 

 ment (except the caudal lamellae) reticulated throughout ; reticulations large, irregularly 

 angular, and with beaded sutures. Under a high microscopic power the skin has a 

 finely cross-hatched appearance, reminding one of shagreen or of the grounding of a 

 mezzotint engraving. This peculiar skin-structure I have not seen in any other species. 

 Colour deep brown. 



Habitat.— South Atlantic; in lat. 41° 54' S., long. 54° 48' W. (Station 319); and 

 lat. 35° 25' S., long. 23° 40' W. (Station 132). 



4. Sapliirina serrata, n. sp. (PI. XLIX. figs. 1, 2). 



Female.- — Length, l-12th of an inch (2"1 mm.). Cephalothorax five-jointed, very 

 broad and subtruncate in front, obscurely angulated at the union of the anterior and 

 lateral margins, posterior angles rounded off; last segment very small, rounded. 

 Abdomen five-jointed, the segments of nearly equal length, second, third, and fourth 

 lunated and finely serrated (as also the fifth) on the posterior margins. Caudal lainelke 



