ASCIDICOLA. 145 



division of the covering of the fifth somite into two 

 laminar folds. 



Genus 5. Ascidicola, Thorell (1859). 



(Coiliaca, Hesse.) 



Body elongated, narrow, subcylindrical ; abdomen a 

 little narrower than the cephalothorax ; caudal rami 

 short, armed with several setae. Anterior antennas 

 7-jointed (5- or 6-jointed, Thorell), short and stout ; 

 posterior 8 -jointed, clawed. Extremity of the man- 

 dible divided into several sharp, slender teeth ; palp 

 simple, 2- jointed. Maxillae composed of two seti- 

 ferous laminae. First pair of, foot-jaws short and 

 broad, 2-jointed ; second pair small 1-jointed, seti- 

 ferous. Four pairs of very small feet, branches 

 2-jointed ; fifth pair wanting. Two ovaries. Ovisacs 

 composed of two delicate leaf-like laminae. 



1. Asoidicola rosea, Thorell. PL XXX, figs. 1 — 10. 



Ascidicola rosea, Thorell. Oni Krustaceer i Ascidier, p. 59, tabs. 

 ix and x, fig. 13 (1859). 



Notodelphys ascidicola (jun.) f Allman. Ann. and Mag. Nat. Hist., 



vol. xx , pi. i, fig. 14, and pi. ii, 

 figs. 15 and 21 (1847). 



Female. — Anterior antennae (fig. 2) extremely short, 

 stout, 7-jointed, beset with numerous short setae; 

 terminal joint of posterior antennae long and narrow, 

 bearing two apical claws (fig. 3). Mandible-palp 



