142 SPECIES INTRODUCED 



it may do considerable damage by eating vegetables. Meat is 

 often included in its diet, and it has been known to commit 

 cannibalism when several slugs have been confined in a small 

 place. Since it feeds mostly at night, it may be overlooked by 

 the collector. The copious mucus of this slug is very sticky, and 

 flies and other insects soon succumb when covered with the 

 secretion. 



UMAX FLAVUS Linnaeus 



The large European slug Limax flavus measures 3 to 4 

 inches (8-10 cm.) in length. It is smaller than Limax max'tmus 

 and differs from it in being somewhat narrower and more 



elongated. Its back is brown or yellowish-brown in color and 

 has many oval or oblong spots of grayish color. The mantle is 

 oval, placed near the anterior end, spotted with large rounded 

 blotches and marked by fine, concentric striations. The eye 

 peduncles are long and slender, blue in color and semitrans- 

 parent. The long narrow foot is yellowish white in color. The 

 sides of the body are without spots. 



Limax flavus has been found in Illinois in the greenhouses 

 of Lincoln Park, Chicago, in company with Limax maximus. 

 Unlike its larger relative maximus, flavus appears to be confined 

 to the greenhouses into which it has been introduced and has 

 not ventured into the territory outside of this protecting habitat, 

 although there is apparently no reason why it should not do so 

 in favorable locations. It does not appear to be so hardy as its 

 larger relative, and perhaps this fact accounts for its failure 

 to spread into cellars and back yards, as maximus has done. 



TESTACELLA EUROPAEA de Roissy 



The peculiar sluglike mollusk Testacella europaea is the only 

 member of the family Testacellidae to be recorded from Illinois. 

 The animal, which measures 2 to 3 inches (5-8 cm.) in length, 



