48 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 60 



1. The length of the female figured by Scott was 21.70 mm., 

 including the fourth legs, that by Claus was 12.50 mm. without the 

 fourth legs, while Nordmann's species was only 7 mm. without the 

 fourth legs. 



2. The cephalothorax in kr0yeri is trapezoidal in outline, the 

 antennal area is separated from the rest of the head, with a large 

 lobe on either side at its base. The two diameters of the head are 

 in the proportion of 5 for length and 6 for breadth. In nordmanni 

 the cephalothorax is triangular, pointed anteriorly, with sinuate 

 sides, the antennal area is not separated, and the two diameters are 

 equal. 



3. The anterior portion of the dorsal plate in kr^yeri is wider than 

 long, the two diameters in the proportion of 4 to 3 ; in nord'niam,ni it is 

 longer than wide, in the proportion of 6 to 5. 



4. In kr0yeri the posterior margin of the dorsal plate is an evenly 

 rounded half circle, in nordmanni it is squarely truncated, leaving 

 sharp corners and a sinuate margin. 



5. In kr0yeri the dorsal plate entirely covers the genital segment, 

 the abdomen, and the basal half of the fourth legs, its margin reach- 

 ing well beyond the tips of the anal laminae. In nordmanni the abdo- 

 men is entirely, and the genital segment is partially, visible in dorsal 

 view, and the fourth legs project nearly their whole length. 



6. In kr^yeri the fourth legs are widest at the center and taper 

 toward both ends, the tips being acute. In nordinanni the fourth legs 

 are of uniform width throughout with squarely truncated tips. 



Such an accumulation of differences shows that Nordmann was 

 dealing with a distinct species, and the name nordmanni is suggested 

 for it. 



{nordmanni^ to Prof. Alexander V. Nordmann, who first described 

 the species.) 



LERNANTHROPUS CHLAMYDOTUS, new species. 



Plate 4, figs. 31-35 ; plate 5, figs. 36-89 ; plate 6, fig. 40 ; plate 13, fig. 104. 



Host and record of specimens. — Seven males and 16 females were 

 taken by Dr. Edwin Linton from the gills of the silver gar, Tylosurus 

 mannus, at Beaufort, North Carolina, September 1, 1902. A single 

 female has been isolated and made the type of the new species, with 

 Cat. No. 54063, U.S.N.M. The remaining specimens of both sexes 

 become paratypes, with Cat. No. 54064, U.S.N.M. 



Specific characters of female. — General shape short and thickset; 

 cephalothorax half as long as the body, narrowed anteriorly, but 

 widened across the posterior margin until it equals or slightly exceeds 

 the anterior margin. The anterior end is inclined downwards and 

 forwards and its lateral flaps are so long they protrude far in front 

 of the ventral surface. This gives it an appearance very similar to 

 the old-fashioned poke bonnet. Body with the shape of an hour- 



