On the Classification of the Crustacea Choristopoda. 299 
“ Phryxus Hippolytes”* represents a male with the 3 posterior legs 
either side thrown backward and the 4 anterior forward, confirming 
the same view 
The g 
though also related in form to male Bopyri. Ia Liriope the thoracic 
egs are grouped as in T'anais, and the abdominal appendages are sub- 
ogi — 
the Brachyura have to the Macroura, and are the higher in rank. 
Tribe I. Isopoda.—The Isopoda thus stripped of genera that are not 
Seay of the tribe, are naturally divided into three subtribes, as 
ollows :— 
Subtribus I. IvorampEea.—Appendices abdominales due postice bene operculi- 
formes, appendices alias optime tegentes. : 
Subtribas IT. Ontscorpea.— A ppendices abdominales dus postice styliformes et 
non operculiformes, fere terminales, raro obsolete : 
Subtribus HII. Cyaoraowna—Appendices abdoriinales dux postice lamellate, 
apud abdominis latera disposite. 
coide ” gs 
Tanais, Apseudes, B and others related ; allied to the ymo- 
thoidea, the genera Savin Praniza, &c. Praniza is an aberrant form, 
abnormal in the number of its legs. The three grand divisions are 
as follows : 
Subtribus I Szrotpea, vel AntsoPopa Cymorsorca.—A ppendices duz posticse 
abdominales lamellate, apud abdominis latera disposite. 
™ Fauna Norwegens, pl 2, £3. + Fauna Norwegens, pp. 35 and 60, pl. 1, 
