42 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 121 



is inconclusive. It appears to be of the genus, however. Conse- 

 quently, the male of this species stiU remains poorly known and 

 perhaps even yet to be described. 



Discussion. — Dinemoura ferox is the largest pandarid copepod yet 

 described. It is almost twice as long as its next largest relative. 

 This alone easily separates it from other members of the group. It 

 has been reported only from sharks from the North Atlantic in the 

 area of Greenland. The known hosts are So7nniosus microcephalus 

 (Bloch and Schneider), reported by Wilson (1920), and Centrophorus 

 squamosus MiiUer and Henle, reported by Hansen (1923). Miers 

 (1880) reported this copepod taken off the "Greenland shark" and 

 noted that the copepods were usually but not always found attached 

 to the eyes of the host. 



Dinemoura latifolia (Steenstrup and Lutken, 1861) 



Figures 194-196 



Dinematura latifolia Steenstrup and LtJtken, 1861, p. 378. — Heller, 1868, p. 199. — 

 Richiardi, 1880, p. 148.— Valle, 1880, p. 60.— Carus, 1884, p. 390.— Brian, 

 1898b, p. 14; 1899, p. 4; 1902, p. 17; 1906, p. 52; 1944, p. 201.— Bassett-Smith, 

 1899, p. 463.— Wilson, 1907, p. 383; 1923, p. 15; 1932, p. 432; 1935b, p. 778.— 

 Yamaguti, 1936, p. 9; 1963, p. 117.— Shiino, 1954, p. 318; 1957, p. 365.— 

 Delamare-Deboutteville and Nunes-Ruivo, 1954, p. 204. — Barnard, 1955, 

 p. 263.— Heegaard, 1962, p. 177. 



Specimen studied. — Two collections from Isurus oxyrinchus Rafi- 

 nesqueinthe North Atlantic (42°18'N, 64°02'W; 35°00'N, 70°00'W). 

 A single collection from the same host in the Indian Ocean (8°55'S, 

 55°08'E). 



Female. — Body form as in figure 194. Total length 14.5 mm 

 (based on an average of 5 specimens). Greatest width 8.2 mm. 

 Dorsal thoracic plates on segment 4 projecting posteriorly over the 

 anterior portion of genital segment. Genital segment about one-half 

 body length. Abdomen 2-segmented, each segment with a dorsal 

 plate. Caudal rami large, each bearing 4 setae. Oral area as in 

 figm*e 195. 



Since the female of this species has been weU described and figured 

 by Yamaguti (1936) and Shiino (1954), I wiU only discuss saUent 

 featiu-es. Adhesion pads associated with first and second antenna 

 and maxiUiped. Oral appendages similar to those of D. producta. 



Legs 1-4 biramose with spine and setal formula as follows : 



Shiino (1947) stated that the fifth legs are still undiscovered. I have 



