NO. 9 HILTON : PYCNOGONIDS 295 



without terminal claw, but with a few delicate spines and some stronger 

 ones on the inner margins. Female genital openings on the 2nd coxal 

 joints of all legs. 



Ammothea latifrons Cole, 1904 

 Plate 41 



Ammothea latifrons Cole, Harriman Alaska Exp. N.Y., 8°, vol. 10, 

 1904, p. 263, pi. 11, fig. 3, pi. 16, figs. 1-9, pi. 17, figs. 1-3. 



Characteristics: Broad trunk, with erect conical elevation with few 

 spines at each corner. Suture lines faintly marked in front, lacking behind. 

 Eye tubercle high, erect, bluntly conical. Caudal segment long and nar- 

 row. Chelifori much more than half the length of the proboscis. It bears 

 marked tubercles and spines. Palpi 8-jointed, reach to well beyond the 

 proboscis. Second coxa not much longer than 1st; 1st and 3rd, marked 

 tubercles on the distal ends. 



Description 



Body: Trunk broad, especially anteriorly, each outer corner having 

 an erect conical elevation bearing a few spines. Suture lines faintly marked 

 in front, lacking behind. Lateral processes crowded, about twice as long 

 as broad distally. On the dorsal border of these distal ends 3 nodules with 

 1 or more spines each. 



Eye tubercle: On the extreme anterior edge of the 1st trunk seg- 

 ment, moderately high, cylindrical; the apex bluntly conical, eyes quite 

 large, near the apex. 



Proboscis: About as long as the trunk to base of caudal segment, 

 broadly elliptical, truncated at the end. Dorsal border more convex than 

 ventral, no circular constriction but longitudinal lines. 



Caudal segment: Very long and narrow, as long as the proboscis. 

 It reaches a little beyond the middle of the 2nd coxal joint of the posterior 

 pair of legs. Not separated from trunk by a suture. It is directed some- 

 what downward. Its dorsal outline is irregular and bears a number of 

 stout spines. 



Chelifori: Much over half the length of the proboscis and thick. 

 The 1st joint reaches to the middle of the proboscis. It bears tubercles 

 on its dorsal side, and these bear spines. The 2nd joint small, spherical, 

 with 1 or 2 spines. The chelifori are bent outward in the middle. 



Palpi: Eight-jointed. Extend beyond the proboscis by about % of 

 their length. Joints 2 and 4 are long, joint 2 the longer; the others are 

 short. Basal joints have a few hairs; distal joints, many hairs. 



