230 TEBENNOPIIORUS. 



Subgenus PALLIFERA, Morse, 1864. 



T. DORSALIS, Binnej'. PL 50, fig. 4. 



Color ashy with a shade of blue, an interrupted black line 

 extending down the centre of the back ; tentacles blackish, base 

 of foot white ; upper surface covered with elongated and slightly 

 prominent glandular projections, the furrows between indistinct; 

 respiratory, orifice very minute. Length, 18 mill. 



Vermont to Pennsylvania, Kentucky. 



Inhabits woods and forests, in the soil under decaying trunks 

 and logs. " It is lubricated by a watery mucus, which is not 

 secreted in quantity sufficient to preserve its life when removed 

 from its native haunts and exposed to the air. It is even diffi- 

 cult to preserve it long enough for examination, as it becomes 

 dry, diminishes more than half in bulk, and dies." W. Gr. Bin- 

 ney. It is active in its movements. 



Unfigured Species. 



T. WETHERBYI, W. G. Binne}^ Resembles the young of T. 

 Carolinensis, but the color blotches are usually in transverse 

 instead of longitudinal series ; it is also more swollen 

 anteriorily and tapers more rapidly posteriorly. The jaw 

 is ribbed as in Pallifera. Length (contracted in alcohol), 

 12 mill. Whitley (7o., Kentucky. 



T. ATJSTRALIS, Bergh. Oahu, Sandwich Islands. 



