418 On the Amphipoda of the Norwegian Coasts. 



duncle of the superior antennae. The first joint of the second 

 pair of feet is long, somewhat shorter than the thoracic seg- 

 ment to which it is attached. The hand is very large, oval, 

 somewhat curved ; its posterior margin, as in the preceding 

 species, is furnished with three teeth ; but the lowest of these 

 is much stronger than in that species. The finger is curved, 

 and hairy on the posterior surface. The respiratory vesicles 

 are oval. The posterior pairs of feet, which are short and 

 thin, gradually increase in length. The length of the animal 

 is 15 millims. 



C. punctata, mihi. — In this species the sexes only differ 

 slightly. The body is closely covered all over with tuber- 

 cles, and sprinkled with dark spots upon a light ground. 

 The superior antennas in the male are longer than in the 

 female, and reach further back than the fourth segment of the 

 thorax. The second joint of their peduncle is as long as the 

 head and first thoracic segment together ; the third is some- 

 what shorter, and the first is still shorter than this. The 

 flagellum, which is somewhat shorter than the last two joints 

 together, consists of eighteen long joints. The inferior an- 

 tenna? reach about to the third joint of the peduncle of the 

 superior antennas, and their third joint is shorter than the 

 fourth. In the female the peduncle of the superior antennas is 

 shorter, and the flagellum consists of 14 joints. The inferior 

 antennas are much longer in proportion to the superior than 

 in the male. Among the numerous tubercles of the body, 

 one, cleft at the apex, projecting from the head, is especially 

 remarkable. On the second segment there is, in the middle 

 line of the back, a thick blunt tubercle immediately above the 

 point of attachment of the second pair of feet, and two smaller 

 ones on each side of this, besides two on the anterior and two 

 on the posterior margin. Many larger and smaller tubercles 

 are scattered between these in irregular transverse series. The 

 third segment bears a large tubercle near the anterior margin, 

 two smaller ones at the sides still nearer the margin, and in 

 the middle of the segment there is a large one with the 

 apex bifid. The fourth segment is furnished with a large 

 bifid tubercle in front, two large ones side by side on the 

 middle of the segment, and a double one at the posterior mar- 

 gin. The following segment bears two large ones, one behind 

 the other, and two smaller ones at the sides. The succeeding 

 segments have two tubercles side by side, near their posterior 

 margins. Above the origin of each pair of legs on these last 

 three segments there is a strong posteriorly directed spine. 

 The length is 12-15 millims. It has been found at Thrond- 



