328 



the genera referred by Prof. Brady to his sub-family Tachidiince. the gem 

 Danielssenia Boeck (= Jonesiella Brady) and Fultonia Scott are included in this 

 family, and moreover 3 new genera, to be treated of further on. 



Gen. 74. TaeMdillS, Lilljeborg, 1853. 



Generic Characters. Body short, sub-depressed, with the anterior di\ 

 broader than the posterior. Rostral projection not defined behind. Genital 

 segment in female imperfectly subdivided in the middle. Caudal rami of moderate size. 

 Anterior antennae comparatively short and thick, though composed of 6 or 7 well 

 defined joints; those in male very strong, subcheliform. Posterior antennae with 

 the proximal joint distinctly subdivided, outer ramus comparatively small, bi- 

 articulate. Oral parts comparatively less fully developed than in most other 

 Tachidiidse, though of normal structure. Natatory legs very powerful and some- 

 what resembling in structure those in the Cylopoida, 1st pair differing only 

 slightly from the succeeding pairs, and having the inner ramus distinctly 3-arti- 

 culate ; 2nd and 3rd pairs somewhat transformed in male. Last pair of legs 

 simple, lamelliform, with no boundary between the distal and proximal joints. 



Remarks. This genus was established as early as the year 1853 by Prof. 

 Lilljeborg, and is the type of the present family. In addition to the species 

 originally described by Lilljeborg, 2 other species have been recorded in recent 

 times, viz., T. litloralis Poppe, and T. crassicornis Scott. I am acquainted with 

 only the type species. 



211. Taehidius brevicornis, Lilljeb. 



(PI. CCXVIII & CCXIX). 



Taehidius brevicornis, Lilljeborg, De crustaceis ex ordinibus trjbus in Scania occurrentibus, p. 19(i, 

 PI. XXU, figs. 1216, PI. XXIII, figs. 112, 9, PI. XXVI, figs. 17 & 18. 



Syn: Taehidius discipes, Giessbrecht. 



Specific Characters. Female. Body comparatively short and stout, rapidly 

 tapering behind, with the anterior division oblong oval in outline, and distinctly 

 depressed in front. Cephalic segment large, exceeding in length the 3 succeeding 

 segments combined, rostral projection obtusely conical in form. Last pedigerous 

 segment considerably narrower than the preceding one. Urosome short, not attai- 

 ning even half the length of the anterior division, and gradually tapering behind, 



