136 XOMOCERUS. 



Orchesella mauritanica, Lucas. 



Orchesella mauritanica, Lucas. Expl. Sci. de I'Algei-ie. 



Pilosa, capite fusco variegato, vittis luteis in medio 

 transversim ornato ; autennis siepius rubris, duobus 

 pinnis articulis nigris, tertio brevi, albo ; thorace 

 ferrugineo, fusco nigroque variegato, supra albo 

 quadrimaculato ; abdomine fusco, antice albo fasciato, 

 postice fulvomaculato ; pedibus furcaque albescentibus. 



This species does not appear to me to differ from 

 the 0. cinda. Lucas himself suggests that it is 

 probably only a variety. 



Orchesella luteola, Lucas. 



Orchesella luteola, Lucas. Expl. Sci. de I'Algerie. 



0. elongata, flava, pilosa ; capite immaculato, oculis 

 magnis, nigris ; thorace antice rotundato, lateribus 

 subrectis, longitudinaliter ferrugineo bilineatis ; ab- 

 domine oblongo ferrugineo maculato ; antennis, pedi- 

 bus furcaque pallide luteis. 



Algeria. 



This species does not seem to differ specifically from 

 the 0. villosa of Europe. 



ToMOCERUS, Nicolet. 

 Plate LYI, figs. 12—15. 



Body cylindrical. Seven eyes in each group. 

 Segments unequal. Antennas long, consisting of two 

 short basal segments, a third long and multiarticulate 

 segment, and a shorter terminal segment also multi- 

 articulate. Body clothed with scales and scattered 

 hairs. Feet biunguiculate. Caudal appendage long. 



The names Ghoreutes and Macrotoma, proposed for 

 this genus respectively by Burmeister and Bourlet, had 

 been already used. 



