[ 57 3 ■ 



PLATE CLIX. 

 FIG. I, II, III, IV. 



ONISCUS AQ^UATICUS, 



Aptera. 



No Wings, 



GENERIC CHARACTER, 

 Legs fourteen. Antenna taper. Body oval, 



SPECIFIC CHARACTER 



AND 



STNONTMS. 



Aih colour. Antennse of four joints. At the end of the tail 

 two bifid appendices. 



Oniscus' Aquaticus : cauda rotundata, ftylis bifurcis, antennis 

 quaternis. SyJ?. Ent. 297. 6. — Spec. Inf, I, 

 376. 6. 

 Onifcus aquattcus lanceolatus, cauda rotundata, ftylis bifurcis. Linn» 



Sy/}. IS! at. 2. 1 06 1. II. — Fn. Sv. 2061. 

 Squilla Afellus aquatica, cauda rotundata, ftylis binis bifurcis. Degeer, 



Inf. 7. 496. I. tah. '^l.fg. I. 

 Afellus aquaticus Gejneri. Raj. Inf 43. i. 



Sulz. H'lft. Inf. tah. '^O. fig. 12. 

 Frifch. inf. 10. tab. 5. 

 Schceff. Elem. tab. 22. 



This fpecies is lefs frequent than Onifcus Afellus, (Common 

 Woodloufe}. It lives in clear waters, moft part of the furamer. It 



G fcarceiy 



