COPEPODS OF THE WOODS HOLE REGIOK 



367 



single female was also captured in the trawl wings at a depth of 

 1,058 fathoms in the same vicinity August 5, 1884. 



Distribution. — Mediterranean (Giesbrecht) . 



Color. — Body colorless and more or less transparent; digestive 

 canal rust colored in the living copepod, according to Giesbrecht; 

 in the present specimens, preserved in alcohol, the digestive canal 

 is dark blue ; eye black. Male brilliantly iridescent, the play of colors 

 extending even to the caudal rami, but omitting the anal abdominal 

 segment. (Rathbun.) 



Female. — Metasome obovate, with rather even margins; head one- 

 third wider than long ; corneal lenses small and well separated ; fifth 



Figure 223.— /SappM'rina pyrosomatis: a. Female, dorsal ; b, female, second 

 antenna ; Cj female, fourth leg ; d, male, dorsal 



segment one-half the width of the fourth ; the latter with a rounded 

 prominence on the dorsal midline at the posterior margin; caudal 

 rami three times as long as wide, with a minute spine on the inner 

 margin near the tip. Fourth segment of second antenna only one- 

 half longer than the third, the two together but little more than half 

 as long as the second segment; the two apical spines on the fourth 

 endopod slender and subequal. Total length, 2-2.25 mm. 



Male. — Head one-third wider than long, narrowed anteriorly ; cor- 

 neal lenses invisible in dorsal view; second thoracic segment with 

 rounded epimeral plates at its posterior corners. End segment of 

 second endopod with one lanceolate spine, two awl-shaped spines 

 sparsely toothed, a long curved claw, and three small spines. Total 

 length, 1.75-2.15 mm. 



