294 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Measurements: Length of body, 0.85 by 0.8 across. The lateral 

 processes each are 0.25 deep; the body between is 0.3 across. The pro- 

 boscis is 0.55 long by 0.3 at the base, and 0.005 at its tip. The ocular 

 tubercle is 0.15 at its base and 0.2 high. The abdomen is 0.3 long by 0.175 

 broad. The chelifori are 0.05 long. The palpi have the joints as follows : 

 1st, 0.075 by 0.1 wide; 2nd, 0.2 long; 3rd, 0.375 long; 4th, 0.2 long; 

 5th, 0.2. 



Type U.S. National Museum, No. 110391. 



Specimens collected from Monterey to southern California. Two 

 specimens. Station 1184-40, Indian Rock, Catalina Island, Sept. 11, 1940, 

 in sea weed, 1 fm. 



Family Ammotheidae Dohrn, 1881 



First appendage well developed, longer or shorter than the proboscis, 

 2- to 3-jointed. Often small, but usually well developed. It sometimes 

 bears jaws in the young, and in one genus, AscorhynchuSj the jaws persist 

 during the life of the individual. Second appendage, often longer than 

 the snout, 6- to 10-jointed, but in most 2- to 4-jointed. 



Third appendage occurs in both sexes, 10-jointed; sometimes coiled 

 at the end, sometimes not ; sometimes with spines, sometimes not. Some- 

 times these spines are toothed along the edges, sometimes not. The body 

 is more or less elongate to concentrated, but segmented. There are 4 pairs 

 of legs. The sex openings are in the 3rd and 4th pairs in the male and in 

 all legs in the female. 



Genus AMMOTHEA Leach, 1914 

 Genus ACHELIA Hodge, 1864 



Trunk, short, stout, segmentation usually lacking. Lateral processes 

 so crowded that the body is disciform. The 1st segment is large, with a 

 square frontal portion. Caudal segment not separated from trunk by a 

 suture, narrow, nearly cylindrical, horizontal. The eye tubercle is near 

 the front of the 1st segment, projects strongly, and bears distinct ej^es. It 

 is constricted at its base, fusiform with a circular constriction near its 

 end, and pointed downward. Chelifori well developed, small, 2-jointed, 

 the 2nd joint globose, chelate in the immature. Palpi 8-jointed, first 3 

 joints short, 4th longer. Ovigers relatively short, larger in the male, 



