24 



Long. 7 — 8 m. m. Lat. 3—3,6 m. m. 



Patria: Africa orientalis. During the expedition of Emiii 

 Pasha and 8tuhlman]i in the bambooforest by Riinsororo more 

 specimens were found in the days from 9 to 13 June 1891. 

 (Mus. Berolinense). 



Subgenus 5. Ethelum. 



Antennae: Flagellura biarticulatum. 



Maxillulre : Lacinia interior penicillis 4*). 



Truncus: Segmentum 1 epimero crasso, supra sulco 

 longitudinali a medio segmenti discreto, raargine laterali non 

 sulcato, post tisso. Segmentum 2 epiraeris integris. 



Cauda: Exopodita omnium pleopodum trachea munita. 



Tlie three known species are all from West-India. 



1. Ethelum Americanum. 

 (Tab. III. fig. 10-12). 

 Mesarnuidillo Amcricaiins Dollfus in Proc. zool. 8oc. Loud. ISIKi. ;jfl7. 



Oblonge ovale, valde convexum, laeve vel potius minu- 

 tissime squamatum. 



Antennae: Flagellum biarticuhitum, scapi articuli quinti 

 tertia parte vel raagis brevius, articulus prior altero triplo 

 brevior, alter apice seta longa instructus. 



Oculi mediocres; ocelli c. 12. 



Caput: Epistoma eonvexiusculum, supra in medio Ironti 

 adcretum, utrinque margine discretum. 



Mala interior maxillulae penicillis 4. 



Truncus : Segmentum primum margine laterali crasso, 

 post subaequaliter fisso; segmentum secundum epimero ante 

 paulo crassiore; margo posterior segmentorum priorum utrin- 

 que leviter sinuatus. 



Telsum : Pars basalis brevis, pars apicalis lata, producta, 

 apice late rotundato, epimera segmenti (juinti distantia pau- 

 lum superans. 



Uropodum scapus oblonge subrectangulus; exopoditum 

 minutum in excisuram marginis postici positum, endopodi- 

 tum quam telsum paulo brevius. 



*; I have but examined one specimen of one species. 



