ESTERLY. — CALANOID COPEPODA FROM THE BERMUDA ISLANDS. 223 



(Plate 2, Figure 15), and the heavy, grasping antenna (the right) of the 

 male (Plate 3, Figure 32). The cephalothorax is twice as long in the 

 mid-dorsal line as its greatest breadth (Plate 2, Figure 12). The ros- 

 trum (Plate 2, Figure 15) is very stout, and bifid, in both sexes. So 

 far as the figures of Dahl ('94, Taf. 1, Fig. 23-26) are concerned, this 

 seems to be the same species, though identification from his figures 

 is not easy. 



The length of the male is 1.2-1.3 mm., that of the female 1.4 mm. 



The eye-spot is red ; most specimens are otherwise colorless and 

 transparent, but a few have red pigment in the mouth region, along 

 the flanks and ventral surface of the body, and in the bases of the 

 appendages. 



Clausocalanus furcatus Brady. 



Plate 1, Figures 2, 7, 9; Plate 2, Figure 11; Plate 3, Figure 33; Plate 4, Fig- 

 ures 36, 40, 44. 



These copepods are small, but easily recognized by the heavy, bifid 

 rostrum (Plate 1, Figures 7, 9). The distal border of the second basal 

 in the third and fourth pairs of feet is toothed in a way that is char- 

 acteristic of the genus (Plate 3, Figure 33). I think there is little 

 doubt of the correctness of the identification of this species, though 

 the proportions of the abdominal segments in the male (Plate 2, Figure 

 11), or in the female, do not agree precisely with other accounts (Gies- 

 brecht und Schmeil, '98, p. 27 ; Scott, : 02, p. 403). 



The animals are colorless and very transparent. The length of the 

 males averages 0.8 mm., that of the females 1.14 mm. This species 

 was much more abundant at North Rock than in any other place where 

 collections were made. 



Pseudocyclops magnus n- sp. 

 Plate 1, Figures 6, 8 ; Plate 3, Figure 23; Plate 4, Figure 41. 



The head and posterior borders of the last thoracic segment are 

 smoothly rounded (Plate 1, Figures 6, 8), and the rostrum is stout. 

 The anterior antennae of the female (Plate 3, Figure 23) are 17- 

 jointed and about one-fifth as long as the entire body. The inner 

 ramus of the fifth foot (Plate 4, Figure 41) is 2-jointed, the first and 

 second joints (of the original three) being fused ; the end joint carries 

 a stout, feathered bristle. 



It is fairly safe to say that this form is new, though I found but one 

 specimen, a female. The fifth foot differs from that of the species de- 

 scribed before, and the size (length 1.1 mm.) is greater than that of 

 F. obtusatus, the largest of the hitherto described species. 



