DECAPODS 137 
NECTOCRANGON LAR (Owen). 
Crangon lar OWEN, in Zoology of Capt. Beechey’s Voyage [of the Blossom], 
Crustacea, p. 88, pl. XXVIII, fig. 1, 1839. 
Argis lar KROYER, Naturh. Tidssk., Iv, 255, pl. v, figs. 45-62, 1842. 
Nectocrangon lar STIMPSON, Proc. Acad. Nat. Sci. Phila., 25, 1860.—ORT- 
MANN, Proc. Acad. Nat. Sci. Phila., 181, 1895. 
Female.—Carapace about two fifths or one third as long as the abdo- 
men; two spines on the median line, the distance between them being 
greater than the distance from the anterior spine to the anterior margin, 
and about equal to or less than the distance from the posterior spine to 

Fic. 74. Mectocrangon lar. a. Dorsal view of carapace andabdomen. ¢ (nat. size). Station 3642. 
5, Side view of carapace and part of abdomen. @ (nat. size). Station 3642. ¢. Side view of abdomen. 
8 (X 14). Station 3779. 
the posterior margin. Sometimes there is a tubercle behind the rostral 
spine. A low blunt irregular carina runs from the orbit nearly to the 
posterior margin; below this a spine on either side; a short antennal 
spine on the anterior margin. Blade of antennal scale exceeding the spine. 
Hands of first pair of feet from three and a half to four times as long 
as the width of the palm. The anterior margin forms an angle of about 
forty-five degrees with the side margins. First to fifth abdominal seg- 
ments furnished with a sharp median carina; sixth seg- 
ment with two sharp caring, which toward the posterior 
end become lower and may disappear altogether in 
front of the posterior margin. Pleura of first four 
segments with rounded entire angles; fifth and sixth ¢ e 
5 ; Fic. 75.  Nectocran- 
segments with an acute tooth or small spine at the gox dar (x 18). a. Aci- 
postero-inferior angles; sixth segment with a supero- Chela, Reco ems 
lateral spine on each side of the posterior margin. eo geet 
Seventh segment with two blunt carinz armed with three pairs of spin- 
ules on the terminal half. 
Dimensions.— Female, length 79.2 mm., length of carapace 21.5 mm. 
Male.—The male differs markedly from the female. It is much smaller. 
The eyes are considerably larger. The anterior margin of the hand is 
