282 JCERA WAKISHIANA. 



IDOTEA MEDIA. Esquimalt Harbour. 

 IDOTEA STRICTA (DANA). Esquimalt Harbour. 



JCERA WAKISHIANA, N. S. Posteriorem marginein pleonis 

 liabens bis excavatum cuspide intermedia supra cuspidatos mar- 

 gines non producta ; antennae inferiores non possunt extendere 

 supra quintum segnientuni ; pereionis posteriora pleopoda non 

 longiora quain posteriori niargo latus est. 



Anterior margin of the cephalon nearly straight ; 

 pereion having the sides subparallel, the greatest 

 width being at the sixth segment ; pleon having 

 a double excavation on the posterior margin, the 

 central point not extending beyond the extremity 

 of the sides. Superior antennas reaching to the 

 extremity of the fourth segment of the inferior ; 

 inferior antennae nearly two-thirds of the length 

 of the animal. Posterior pair of pleopoda as long 

 as the posterior margin of the pleon, terminating 

 in two styliform rami, each of which is tipped 

 with a few short hairs. 



This species was taken from a sponge dredged 

 in about eight fathoms of water in Esquimalt 

 Harbour. 



The specific name is derived from the circum- 

 stance of the animal having been found on the 

 territory of the tribe of Wakish Indians. 



TANAIS LORICATUS, N. S. Exemplum imperfectum ; inferi- 

 ores antennas semi-breviores quam superiores liabens ; guathopo- 

 dum primi paris propoda ovata dactylo breve et tumido; pereio- 

 podum primis tribus articulis brevibus et latis suiit, loricis ad 

 pereionem adhereutibus. 



