



24 LIMACID^E. 



eggs were semi-transparent, oval, about one-fifth of an 

 inch in the greatest diameter. The young when ex- 

 cluded were more than a fourth of an inch long, semi- 

 transparent and gelatinous ; tentacles bluish-black at 

 base, black at tip, the inferior pair very minute and 

 hardly visible. Body broad; back whitish, with two 

 distinct rows of minute black dots down the middle, 

 and other scattering spots on the sides. No percep- 

 tible furrow between the mantle and body. They in- 

 creased very rapidly in size, and in a few days were four 

 times as large as when hatched. 



2. TEBENNOPHORUS DORSALIS, BlNNEY. 



PLATE LXIII. FIGURE 3. 



T. corpora cylindraceo, postice attenuate ; dorso linea 

 longitudinal! nigrescente interrupts, et gland ulis minutis 

 elongatis instructo ; apertura laterali parva, antica. 



SYNONYMS AND REFERENCES. 



Philomycus dorsalis, BINNEY, Limacidse, p. 14. 

 ADAMS, Shells of Vermont. 



DESCRIPTION. 



Color of upper surface ashy, with a shade of blue, an 

 interrupted black line extending down the centre of the 

 back ; superior tentacles black, about one-eighth of the 

 length of the body ; lower tentacles blackish, very short. 

 Body cylindrical and narrow, terminating posteriorly in 

 an acute point ; base of foot white, very narrow, its 

 separation from the body not well defined. Upper sur- 



