8b LI M AC ID J^, 



specimens sent to him by Mr. Waller from Valentia, 

 were enclosed in a tin box having holes one-eighth of 

 an inch in diameter to admit air ; two of the slugs 

 attenuated themselves to such an extent that they 

 contrived to crawl out of the box through the holes. 

 Professor All man, in the paper above alluded to, 

 states that he nearly lost the only specimen he then 

 possessed, the animal having squeezed itself through 

 a narrow opening of the lid of the box in which it 

 was imprisoned. 



The animal is sometimes spotted with white instead 

 of yellow, or is whitish with black spots. 



GENUS III— UMAX* LINNE. 



Body elongated, cylindrical, skin wrinkled, back more or less 

 keeled ; mantle either granulated or concentrically striated ; 

 respiratory orifice near the posterior margin of the mantle ; 

 reproductive orifice behind the base of the right upper tentacle ; 

 slime-gland wanting ; jaw smooth, strongly arched, and beaked 

 in front. 



Shell oval or unguiform, seated beneath, and covered by the 

 hinder part of the mantle. 



The Limaces differ from the Arions in the position 

 of the respiratory orifice, and in being destitute of a 

 caudal slime-gland. They are more or less gre- 

 garious ; sometimes a dozen or more may be seen 

 together. 



Moquin-Tandon says that during the breeding 

 season they excavate small subterraneous galleries in 

 moist and sheltered places, in which they bury them- 

 selves and deposit their eggs. 



* Slug. 



