COPEPODS OF THE WOODS HOLE REGION 



487 



abdomen with two rows of dichotomously branched processes along 

 either side and rudiments of caudal rami. First antenna 1-seg- 

 mented; second antenna chelate; mouth parts replaced by small 

 knobs; first two pairs of legs biramose, third and fourth pairs 

 uniramose, all rami 2-segmented; fifth legs lacking. Egg strings 

 in a loose irregular coil. One species in this area. 

 Male. — Unknown. 



LERNAEOLOPHUS SULTANUS (Nordmann) 



Figure 293- 

 Pennella sultana Nokdmann, Bull. Soc. Imp. Nat. Moscow, vol. 37, pt. 2, p. 485, 



pi. 5, 1864. 

 Lernaeolophus sultamis Wilson, Proc. U. S. Nat. Mus., vol. 53, p. 91, pi. 13, 1917. 



Occurrence.— Fo\mdi on the gill arches of the orange file fish 

 {Alutera shoep-fii) and on the upper jaw inside the mouth of the 

 garfish {Tylosurus maH^im), both hosts captured in Vineyard 

 Sound. 



Distribution. — From the common grunt {Haemulon plumieri) at 

 Tortugas, Fla. (Wilson). 



Color (preserved material) . — Body a uniform reddish brown. 



/^e?72^e.— Cephalothorax spherical, divided on the anterior and 

 ventral surfaces into two pads by a shallow median groove, each pad 

 produced ventraUy 

 into three dactylose 

 processes. Posterior 

 end of head armed 

 with one dorsal and 

 two lateral horns, all 

 more or less branched. 

 Walls of the neck and 

 trunk very hard and 

 thick chitin; neck the 

 same diameter through- 

 out, trunk twice as 

 wide. Abdomen on a 

 level with the dorsal 

 surface of the trunk, 

 its lateral processes 

 dichotomously branched, those in the two rows on each side alternat- 

 ing with each other. Rami of legs often broken off, well armed with 

 setae. Total length, 12-15 mm. 



Remarks. — The distinctive characters of this parasite are the 

 heavy chitinization of the entire body and the two rows of branched 

 processes on each side of the abdomen. These processes are often 

 thickly covered with algae and protozoa and are more profusely 

 branched in the older and larger individuals. 



FiGUBE 293. — Lernaeolophus sultanus: a. Female, lateral ; 

 b, female, first and second antennae 



