COPEPODS FROM EQUATORIAL WATERS OF PACIFIC OCEAN 



213 



cella were found in the above sample. As the 

 males of several described females, including 

 the preceding species, are not known, I hesitate 

 to describe the present species as new. 



Scaphocalanus echhiatiis (Farran, 1905) 



(Plate 19, figs. 6, 7) 



Pacific records: Farran, 1929, 1936; Mori, 1937; 

 Wilson, 1950; Honjo, 19.52; Tanaka, 19-53; Tsuruta and 

 Chiba, 1954a; Chiba, 1956; Honjo et al., 19.57. 



Vessel: Station Occurrence 



Hugh M. Smith __ 63 1 female, 2.00 mm. 



Remarks: S. echinatus resembles S. longi- 

 furca but the inner edge setae on the fifth feet 

 of the former species are coarsely toothed (fig. 

 7). 



Scaphocalanus longijiirca (Giesbrecht, 1888) 



(Plate 19, figs. 8-11) 



Pacific records: Tanaka, 1953. As Scolecithricella 

 loiigifurca, Scott, 1909. As IScaphocalanus gracili- 

 cnuda, Tanaka, 1937. 



Vessel: Station 



Hugh M. Smith __ 94 



Do 29 _- 



Do 



63 



Occurrence 



1 male, 1.53 mm. 



2 females, 1.87, 1.94 



mm. 

 1 female, 1.94 mm. 



Remarks: The similarity of this species to 

 S. subbrevicornis has been pointed out by Far- 

 ran (1929) and Vervoort (1951). The latter 

 author has indicated that Tanaka's S. gracili- 

 cauda (male) is identical to a male doubtfully 

 referred by Rose (1942) to S. dentata. Ver- 

 voort (1951) suggests that these two males may 

 be the male of S. longifurca. I, too, have found 

 a male specimen which I am tentatively refer- 

 ring to S. longifurca rather than to S. subbre- 

 vicornis, as figured by Vervoort, because of the 

 small size of the present specimen (1.53) . Ver- 

 voort's specimens measured 2.19 mm. and Tan- 

 aka's single specimen was 1.75 mm. The former 



author has also suggested (1957) that Wilson's 

 (1950) records of S. subbrevicornis are prob- 

 ably referable to S. longifurca. 



Scoltocalanus securijrons (T. Scott, 1894) 



(Plate 19, figs. 12-15) 



Pacific records: Scott, 1909; Farran, 1929; Tanaka, 

 1937; Brodsky, 1950; Wilson, 1950; Tanaka, 1953; 

 Hida and King, 1955; Heinrich, 1958b. 

 Vessel : Station Occurrence 



Horizon 32 1 female, 4.08 mm. 



Remarks : The ventral surface of the genital 

 segment is produced posteriorly and partly 

 overlaps the following segment (fig. 14). The 

 spine on the left fifth foot is thicker than that 

 on the right (fig. 15). These two characters 

 will identify the female of this species. No 

 male has been found in the present samples. 



Scoltocalanus farrani A. Scott, 1909 

 (Plate 19, figs. 16-20) 

 Pacific records: Scott, 1909; Wilson, 1950. 



Vessel : Station Occurrence 



Hugh M. Smith __ 29 1 male, 3.50 mm. 



Remarks : The structure of the fifth pair of 

 feet particularly the relative lengths of the exo- 

 and endopods and the presence of a tooth-like 

 process on the second basal segment of the 

 right foot will identify the male of this species. 

 No females were found. 



Scoltocalanus sedalus Farran, 1936 

 (Plate 19, figs. 21-25) 

 Pacific records: Farran, 1936. 



Vessel: Station 

 Hugh M. Smith __ 29 — . 

 Orsom 10 



Occurret^ce 

 1 female, 3.40 mm. 

 1 female, 3.30 mm. 



Remarks : This species is distinguished by 

 the long setae and small, outwardly directed 

 spines on the terminal segments of the fifth 

 pair of feet (fig. 25). 



Family TEMORIDAE 



Temoropia mayumhaensis T. Scott, 1894 

 (Plate 20, figs. 1-12) 



Pacific records: Scott, 1909; Farran, 1929; 

 Wilson, 1942; Heinrich, 1957b. 



1936; 



Vessel: Station Occurrence 



Hugh M. Smith __ 94 6 females, 0.94-0.99; 



3 males, 0.88-0.92 

 mm. 

 Orsom 10 2 females, 0.98 mm. 



