266 COLE 



The description of Ammothea longicaudata Stimpson ('64, p. 159) will 

 apply in most respects to A. latifrons, but the description is so generic 

 that it would apply almost equally well to a number of other species. 

 Furthermore, Stimpson's single example was evidently an immature speci- 

 men, and if, as he says, the palpi were 9-jointed,i it is not unlikely that it 

 belongs properly in the genus Atnviothella. On the whole it seems best 

 to regard it as a distinct species until further material from the region of 

 Puget Sound shall enable us to settle the question. 



All the specimens of A. latifi'ons had a quantity of foreign material 

 entangled in the spines ; those in the lot from Dutch Harbor especially 

 were covered with this debris, containing, among other things, small 

 brownish stalked bodies (similar ones are not infrequent on Pycnogonida) 

 and groups of small cases appearing much like egg-cases of some ani- 

 mals, possibly the same as those referred to by Hoek ('81^, p. 143). 



AMMOTHEA ALASKENSIS sp. nov. 



Plate XII, fig. 4; plate xvii, figs. 4-12. 



Type.— 5 and ? , University of California, No. 19,505, Orca, Alaska. 



Trunk short, stout, smooth ; sutures very indistinct ; first segment square 

 in front, affording a broad attachment for the chehfori and palpi ; lateral 

 processes about equal to width of body, larger distally, and closely 

 approximated, so that the body appears nearly circular in outline ; a small 

 protuberance with a short spine on the dorsal side of each process near 

 the distal end. 



Caudal segment long, narrow, somewhat smaller proximally, reaching 

 to about the middle of the first coxal joint of the posterior pair of legs ; 

 with 3 or 4 small spines near the apex and a large bristle on the 

 dorsal side. 



Eye tubercle low, conical ; the posterior side more slanting and with 

 more of a 'hip.' Eyes large, at about the middle of the tubercle; no 

 noticeable difference in size. 



Proboscis about as long as trunk to base of caudal segment, distinctly 

 fusiform in dorsoventral view, strongly convex on dorsal side and more 

 nearly straight on ventral when viewed laterally ; with a more or less 

 irregular annular constriction about a fourth of its length from the apex. 



Chelifori considerably less than half the length of the proboscis ; first 

 joint with a considerable triangular projection distally on the dorsal side, 

 terminating in a small bristle ; second joint small, globular, arising some- 



1 " Chelate ' antennse ' much shorter tlian the proboscis ; their slender lower branch, 

 however, is much longer, nine jointcd,not tapering, and with blunt extremity" [^loc, cit.). 



