some Entomostraca. 29 



longer than the third segment. The abdomen of the male is very 

 curious. It is five-jointed, and has along the sides several tufts 

 of long hairs. I know nothing like this in any other species. The 

 terminal setae are of moderate length, and the second is rather 

 longer than the others. 



Length of cephalothorax '072. 



„ abdomen . . . .'040, including the stylets. 



Collected by Dr. Sutherland in the Atlantic, N. L. 31° 50' to 

 N. L. 27° 30', W. L. 18° to 20°. 



PI. X, figs. 1 to 8. 



Candace pachydactyla, Da. 



I have some specimens very like C. pachydactyla, but it is with 

 great hesitation that 1 refer them to that species, because they 

 differ in the number of segments of the cephalothorax, in the re- 

 lative sizes of the two branches of the second pair of antennae, 

 and do not agree very closely in the structure of the first pair of 

 antennae. Dana has, however, himself figured a specimen with 

 five cephalothoracic segments as belonging to this species, though, 

 it is true, he expresses a doubt on the subject. The anterior an- 

 tennae vary a good deal in different specimens, unless, indeed, 

 several separate species are here united together. 



The second pair of antennae have five long hairs at the end of 

 the small accessory branch, and eleven at the end of the organ 

 itself. In one specimen this organ resembled Dana's fig. 15, 

 PI. LXXVIII., but in another the two branches were nearly equal 

 in length. The first pair of maxillae (PI. VI., fig. 7) are of a 

 very peculiar form, and quite unlike any other that I have seen. 

 I do not know whether the form is generic or only specific. The 

 maxillipeds are small, straight and seven-jointed (fig. 8). 



I have several specimens of a female, which I refer to this spe- 

 cies, because it agrees in form and in the arrangement of the setae 

 of both pairs of antennae, and in the structure of all the organs, 

 which do not present sexual differences. The fifth pair of legs are 

 small and symmetrical (fig. 12), but differ in different specimens. 



On the whole, I am inclined to think that two or more nearly 

 allied species are here united, but I have not enough specimens to 

 attempt to separate them. 



Collected by Dr. Sutherland in N. L. 12° 21', W. L. 25°, and 

 in N. L. 31° 50', W. L. 18° 30', and by Dana in S. L. 6°, W. L. 

 24°. 



PI. VI. figs. 6 to 12. 



