Copepoda from the Falkland Islands. 3 



1901 . Boeckella pyijmcea , Uaday, '•' Diagnoses praeciirsoriae Copepodorum 

 novoriun e Patagonia," in Terinesz. f iizet. 24. 



1902. Pseudobopckclla pycjiiKea, Daday, " Miliroskopische Susswass- 

 tliiere ans Patagonieu,'" op. cit. 25. 



190-5. Pseudoboeckella anderssononiin, Eknian, (2) p. 10, pi. i. figs. 3-5. 

 1905. Boeckella michaelseiii, Ekmau, (3) p. 603. 



This species occurred in at least eight gatherings, and 

 both males and females bearing ovdsacs were observed. The 

 species, though comparatively small, is readily distinguished, 

 both the female and male, but especially the latter, by the 

 structure of the fifth pair of legs. In the female the spine 

 on the inner distal angle of the second joint of the outei 

 ramus is comparatively feeble and shorter than the tliird 

 joint, and this third joint, which is smaller than the preceding 

 one, carries only three bristles ; the two terminal bristles are 

 unequal in length, one being tolerably stout and spiniform 

 and longer than the other ; the third bristle, which is also 

 small, springs from near the lower end of the outer margin. 



In the male the fifth pair of legs are tolerably long and 

 slender and unsymmetrical. The left leg is somewhat 

 shorter than the other, and the first joint of the outer ramus 

 has the inside margin expanded and convexly and evenly 

 rounded, and with the rounded edge fringed with small 

 hairs ; the second joint is narrow and shorter than the first, 

 and is armed with a terminal spiniform prolongation ; the 

 inner ramus is very rudimentary, and consists of a small 

 single-jointed appendage. The right leg is elongated and 

 slender, and the inner ramus is short and feebly developed, 

 as shown in the drawing (fig. 5). Figure 6 represents the 

 fifth pair of legs of an immature male. 



Genus Pseudoboeckella, Mrazek, 1901. 



This genus is nearly allied to Boeckella, and there is so 

 close a resemblance between the females of the two that 

 the species can with difficulty be determined where female 

 specimens only are available. In the male the difference 

 between them is more distinct, especially in the structure of 

 the last pair of legs, for while the inner ramus of the left leg 

 is, as in Boeckella, quite rudimentary, that of the right is 

 tolerably well developed, as shown by the drawings. Three 

 species belonging to this genus have been observed in the 

 collections. 



Pseudoboeckella poppei, Mrazek. (PI. I. fig. 9.) 



1895. Boeckella brasiliensis, Poppe and Mrazek (not Lubbock), (6) 

 p. 13, with plate, 



1* 



