410 



/.'. >,..///,.-. Tin- female of this form has been described and figured in the 

 main part of this \vurk. and I have therefore here confined myself to an indication 



..f tin- M-xual differences exhibited by the adult male. These differences are, as 

 shown above, rather striking. 



urrence. The present form, of which previously <mly 3 female spe- 

 cimens had come under my notice, occurred ratlin- frequently in one locality near 

 K"i>havn, at a depth of about 2<> fathoms, sandy bottom. 



Page 233. 



Add the following genera and species belonging to the family Ci 



/.tnlil : 



Gen, Tetragonieeps, Brady, isso. 



Generic ('h<i/'nrt<r*. Body of narrow cylindrical form, with the posterior 



division unusually slender. Cephalic segment comparatively large and deep pro- 

 jecting in front in an obtuse rostral prominence. Caudal rami conically tapered. 

 Anterior antenna- well developed, with the 1st joint much the largest and produced 



at the end outside to a claw-shaped process. Posterior an tenure with the proximal 

 joint distinctly subdivided, outer ramus small, uniarticulate. Anterior lip securi- 

 formly produced. Mandibles strongly built, with the palp well developed, biramous. 

 Maxilla- \\ith the epipodal lobe obsolete. Anterior maxillipeds with 3 setiferons 

 lobe- inside the basal joint, apical part distinct, Inarticulate. 1st pair of legs 

 with tin- inner ramus much longer than the outer and Inarticulate. The 3 suc- 

 dniL' pair- of legs with the inner ramus likewise Inarticulate, but shorter 

 than the outer, the latter in -1th pair much elongated; natatory setfle in all 3 

 paii- much reduced in number. Last pair of legs not very large, distal joint 

 coiiirallv produced and in smne cases confluent with the proximal one. 



Remarks. Thi> genus was established by Prof. Brady in the year 18SO, 

 to include a sinj.de species, '/'. ninlliolitlti*. The generic name refers to the 

 piadian-jiilar fun,, of the head, as seen laterally, chiefly caused by the \er\ 

 prominent anterior lip. In latter years several additional species of this genus 

 ha\e I,,.-,, deM-rihed by Th. Sc.itt: but most of these ha\ e recently been removed 

 by that author, to constitute the type> of separate genera. The form described 

 below oi,j_dit. I think, to be referred to the original genus. 



