662 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 47. 



Maxillipeds with a short, triangular basal joint and a slender, 

 curved, terminal claw, armed with a blunt spine on its imier margin 

 near the center. Outside of and a little behind the maxiUipeds, on 

 the lateral margins of the head, are located the peculiar appendages 

 noted by both Hesse and Kurz, but apparently overlooked by 

 Kr0yer in the present species. Each is ovate in outline, thin, convex 

 outwardly and concave inwardly, and is attached by a narrow neck 

 to the lateral margin of the head just behind the carapace. In the 

 present species they are relatively so small and they lie so close to the 

 surface of the head that they are easily overlooked (see p. 664). 



Color, a uniform white; eggs strings a faint pink or flesh color; 

 alimentaiy canal a deep black, most conspicuous m the neck, where 

 it appears as a broad black band with undulating margins; second 

 maxillae yellowish (Doctor Linton's manuscript notes). 



Total length, 8.4 mm. Length of cephalothorax, 3.4 mm.; of egg 

 strings, 2.25 mm.; of trunk, 3 mm.; of second maxillae, 2.5 mm. 



Width of cephalothorax, 0.5 mm.; of trunk, 1.85 mm.; of second 

 maxillae, 0.9 mm. 



Specific characters of male. — General form ovate, the head at the 

 pointed end; cephalothorax and anterior trunk in the same line and 

 covered with a dorsal carapace; posterior trunk at right angles to the 

 rest of the body. First antennae slender and indistinctly three- 

 jointed; second antennae biramose, the two rami about the same 

 length, the endopod one-jointed and bluntly rounded, the exopod 

 two-jointed and tipped with a short curved claw; mouth tube 

 broadly conical and pointed ventrally, much longer than the antennae; 

 first maxillae bipartite and without a palp, attached to the side of the 

 mouth tube at about its center, with the tips of the setae projecting 

 a little beyond the end; second maxillae and maxillipeds almost 

 exactly alike, relatively large, with massive basal joints and short 

 curved terminal claws; behind the second maxillae projects ventrally 

 a broad conical genital process, somewhat corrugated at its tip. 



Color, a light yellow. 



Total length, 0.26 mm. Greatest diameter, 0.13 mm. 



Qizae, from Kr0yer's specific name {Mugil liza) of the host.) 



Remarks. — One specimen of this species was obtamed by Kr0yer 

 from the gills of " Mugil liza" (M. curema) near New Orleans, Louisi- 

 ana, and was described and figured in his Bidrag till Kundskab om 

 Snyltekrebsene. The specimen was a young female, 3 mm. in length 

 and without egg strings, and he referred it to the genus Ancliorella. 

 But he added that if his view of the structure of the attachment 

 apparatus was correct the species might properly be considered the 

 type of a new genus. In the same year (1863) Hesse published^ 

 the description and figures of a new genus and species which he 



» Ann. des Sci. Nat. (4), Zool., vol. 20, pp. 122 to 132, pi. 1, fig. 1, a-f. 



