COPEPODS OF THE WOODS HOLE REGION 



141 



CANDACIA PACHYDACTYLA (Dana) 



P^IGURE 96 



Candace pacliydactyla Dana, Proc. Amer. Acad. Arts and Sci., vol. 2, p. 23, 

 1849. — GiESBREciiT, Fauna und Flora des Golfes von Neapel, vol. 19, p. 424, 

 pis. 21, 22, 39, 1892. 



OcGiorrence. — A male and a female taken in a surface tow south- 

 ea,st of Nantucket August, 1886; 5 males and females from trawl 

 wings, Stations 2194, 2195, Alhatross, south of Nantucket. 



Distribution. — China Sea, tropical Atlantic (Dana) ; Fiji Islands, 

 Philippines (Brady) ; Malta (Thompson) ; tropical Atlantic 

 (Kr0yer, Giesbrecht, Cleve) ; Gulf of Guinea (T, Scott) ; South 

 African coast (Cleve, Stebbing) ; Indian 

 Ocean, Ceylon (Thompson and Scott) ; north- 

 ern Atlantic (Wolfenden) ; Bay of Bengal 

 (Sewell) ; eastern Atlantic (Lubbock) ; Ma- 

 lay Archipelago (A. Scott). 



Color. — Body moderately transparent and 

 colorless except for scattered red oil drops 

 and the reddish or yellowish oviducts. The 

 chitin of the body and the appendages, espe- 

 cially the end segments of the second, third, 

 and fourth exopods, and the stout spines on 

 the fifth legs of the female, have a reddish- 

 brown wash of greater or less intensity; no 

 eye is visible. 



Female. — Metasome two and one-half times 

 as long as wide, spines at the posterior corners 

 short, not reaching the center of the genital 

 segments; urosome stout, one-third as long 

 as metasome ; genital segment longer than ab- 

 domen, with a ventrolateral process on either 

 side behind the genital opening ; terminal seg- 

 ment of fifth legs much longer than the two 



basal segments combined, with three short and stout apical spines, 

 a coarse spine at the center of the outer margin, and three setalike 

 spines close together and nearer the distal end of the inner margin. 

 Total length, 2.4-3 mm. 



Male. — The right spine at the corner of the fifth segment much 

 longer than the left, reaching the center of the first abdominal seg- 

 ment, and curved inward at its tip, which is boot-shaped, with a 

 heel; genital segment with a bluntly rounded process on the right 

 side near the posterior end; inner process of second ,segment of 

 right fifth leg turned outward alongside the end segment and curved 

 71937—32 11 



Figure 96. — Candacia pachy- 

 dactyla: a, Female, fifth 

 legs ; h, male, fifth legs 



