24 H. .1. HANSEN. 



calicles with many short and generally branched 

 setje (PI. 1, figs. 1 /—I h; PL 2, Cg. 3 g). 



The first pair of legs always well developed and more tlian 

 half as long as the following pair. 



The exopods generally well developed and very conspicu- 

 ous, rarely very short. 



Gen. 2. Scolopendrella, Gervais, 1839. 



C^ Comptes-rendns de I'Academie des Sciences/ T. ix, 1830, 



p. 532.) 



The posterior margin of the thirteen dorsal scuta 

 (all with exception of the last one) produced into 

 a pair of triangular plates, of which several are 

 at most somewhat broader than long and all 

 rather large, with exception of the thirteenth 

 pair. 



The head is posteriorly at the middle badly 

 defined from the neck; apparently it is defined 

 by the two short rods converging to the posterior 

 end of the central rod, and these rods are strong 

 and very conspicuous. 



The anterior surface of the posterior pairs of 

 legs with few setoe. 



The cerci either with stripes on the terminal 

 area or — generally — besides with elevated trans- 

 verse lines on the most distal part outside this 

 area. 



The sense-calicles near the base of the cerci 

 regular, with the wall vertical on all sides; the 

 margin of the calicles quite uaked (PI. 5, fig. 4 //). 



The first pair of legs rarely more than half as long as the 

 following pair, often rudimentary, consisting of a small 

 knob-shaped joint without claws. 



The exopods always short or even rudimentary. 



In these diagnoses I have put forward all the characters 

 which could be rather sharply expressed. The species of 



