occurring on the Norwegian Coasts. 417 



is small, and the forehead terminates in front in a tubercle. 

 In the males the superior antennae reach to the third segment 

 of the thorax ; the second joint of the peduncle is twice as 

 long as the first, and the third somewhat shorter than this. 

 The flagellum, which consists of twelve joints somewhat 

 thickened outwards, is not so long as the third joint of the 

 peduncle. The inferior antennas do not reach to the end of 

 the second joint of the superior antenna?. The first joint of 

 their peduncle is short, the second somewhat longer, the third 

 twice as long as this, and the fourth of the same length as the 

 third, but thinner. The flagellum is as long as the last joint 

 of the peduncle. The antenna? are furnished with long hairs 

 along the whole of the lower surface. In the females the 

 superior antenna? are much shorter than in the males, so that 

 the inferior antenna? are longer than their peduncle. The first 

 joint of the peduncle is very short, only half as long as in the 

 male ; the second is somewhat longer than the third. The 

 flagellum is much longer than the third joint. In the males 

 the first two segments of the thorax are excessively long, and 

 both of the same length. The second pair of hands, when 

 extended, do not reach to the beginning of the head. In the 

 females, on the contrary, the segments of the thorax are short, 

 the first segment shorter than the second, and the hands extend 

 in front of the head. The first joint in the second pair of feet 

 is exceedingly short, only a little more than one-third the 

 length of the hand, which is oval, and in the males more 

 elongated than in the females. Its posterior margin is fur- 

 nished with a strongly projecting tubercle at the point which 

 meets the finger, and another and more strongly pyramidal one 

 near the origin of the latter. Immediately above this tubercle 

 there is a very small one. The respiratory vesicles are thick- 

 ened at the apex. The posterior pairs of feet are short and 

 broad, and increase gradually in length. The length of the 

 largest specimens is 12 millims. 



G. laticomis, mihi. — This species was found at the same 

 place as the preceding, but only isolated male specimens. 

 The head in this species has no frontal tubercle. The superior 

 antenna? are exceedingly long and broad. The first joint of 

 the peduncle is much longer than the head ; the second joint, 

 which is one-third longer than the first, is three times as broad 

 as the peduncle of the inferior antenna?. The third joint is 

 only half as long and broad as the second. The flagellum, 

 which is as long as the third joint, consists of ten joints. The 

 inferior antenna?, which are strongly clothed with hair on the 

 lower surface, reach to the end of the second joint of the pe- 



Ann. & Mag. N. Hist. Ser. 4. Vol in. 32 



