COPEPODS OF THE WOODS HOLE REGION 



503 



and globular ; second antennae short, with stout apical claws ; mandi- 

 bles fringed with coarse, blunt teeth ; teeth of maxilla also coarse and 

 curved, palp stylet-shaped. Swimming legs small and rudimentary, 

 with knoblike lobes ; ovisacs as long as the body. Total length, 5 mm. 



Male. — Head fused with first two thoracic segments; trunk 3-seg- 

 mented, the anal segment the longest; caudal rami slender and seti- 

 form. First antennae showing no segmentation; second antennae 

 very stout, with a swollen basal segment and a strong apical claw; 

 terminal segment of maxilla clawlike, without teeth; terminal claw 

 of maxilliped small, with an accessory spine at its base. Swimming 

 legs very small, each a minute process tipped with two setae. Total 

 length, 0.45 mm. 



Remofrks. — Kr0yer and T. and A. Scott separate this species from 

 cornutus^ but Hansen makes the two synonymous. If Scott's figures 

 of the mandible and maxilla of the female of comutus and of the 

 swimming legs of the male are correct, then surely the two species 

 are distinct. The species may be identified by the characters given 

 in the key and may be distinguished from comutus by the fact that 

 the head is wider than long and the body is short and stout. 



ACANTHOCHONDRIA DEPRESSA (T. Scott) 



Figure 299, a 



Chondracanthus depressus T. Scott, 23d Ann. Rep. Fishery Board Scotland, 

 pt. 3, p. 114, pi. 6, figs. 7-13, 1905. 



Occurrence. — Taken from the gills of the common winter flounder 

 {Pseudopleuronectes ainericanus) ^ captured in Vineyard Sound, 

 July, 1883. 



Figure 299. — a, Acanthochondria depressa, female, dorsal (after T. Scott) ; 6, 

 A. galerita, female, dorsal (after Rathbun) ; o, A. phycidis, female, dorsal 

 (after Rathbun) 



Distribution. — Irish Sea, Scottish coast (T. and A. Scott). 

 Color. — Preserved specimens are a uniform brownish yellow. 



