COPEPODS OF THE WOODS HOLE REGION 



483 



FiGDEB 289. — Lernaeenicus afflxus: a. Female, 

 .dorsal ; b^ female, second antenna ; c, female, 

 maxilla 



fifths as wide and about one-third as long as the trunk; the caudal 

 rami are tiny knobs, destitute of setae. First antenna 2-segmented ; 

 second antenna with one seg- 

 ment and an apical claw; 

 first two pairs of legs bira- 

 mose, rami 1-segmented ; 

 third leg with a basal plate 

 and a single 1-segmented ra- 

 mus; fourth leg with basal 

 plate only, no ramus. Total 

 length, 20-30 mm. Egg 

 strings, 15-20 mm. long. 



Remarks. — These parasites 

 often bunch themselves on 

 the throat of the tomcod, three 

 or four using the same open- 

 ing through the skin, but at- 

 taching their heads to differ- 

 ent bones. This attachment 



to a bone and the single pair of horns, usually unbranched, are the 

 distinguishing characters. 



LERNAEENICUS LONGIVENTRIS Wilson 

 FlQTJBB 290 



Lernaeenicus longiventris Wilson, 

 Proc. U. S. Nat. Mus., vol. 53, p. 66, 

 pi. 7. 1917. 



Occurrence. — From the flesh of 

 the barrelfish {Palinurichthys per- 



1'%>;j^J^ X_yii^- — ciformis)., the bluefish {Pomato- 

 A U THUS saltatrix) ^ the Spanish mack- 



erel {Scomheromorus Tnaculatus), 

 the crevalle {Caranx hippos), and 

 the hardtail {Caranx crysos), all 

 captured in and around Woods 

 Hole. 



Dwtnhution. — From flesh of 

 dolphin {C oryphaena hippurus), 

 Atlantic Ocean southeast of Nan- 

 tucket; gills of black drum {Pogonias cromis), at Norfolk, Va.; 

 operculum of common mullet {Mugil cephalus), at Beaufort, N. C. 

 (Wilson). 



Color. — Body yellowish white, head a pinkish red, oviducts dark 

 brown, &gg strings a deep maroon. 



Female. — Head at right angles to the neck, without horns but 

 with three knobs, one posterior and two lateral. Neck much longer 



a 



tiGUEE 290. — Lernaeenicus longiventris: 

 a. Female, lateral ; b, female, first and 

 second antennae 



