46 HtillBULA CESPITALIS. 



rested in companies, and appeared to feed chiefly at 

 night. 



By the 4th of September they had attained a length 

 of about three-eighths of an inch, when I took down 

 notes on them as follows : 



Moderately stout ; the polished head has the lobes 

 rounded and is narrower than the second segment, 

 into which it can be partially withdrawn. Body 

 cylindrical, and of almost uniform width throughout, 

 tapering only slightly towards the extremities ; seg- 

 mental divisions deeply cut, and the prominent 

 tubercles give the skin a rather rough appearance. 



Ground colour dull brownish-black, with a slight 

 olive tinge ; the head and the horny second segment 

 wainscot-brown, freckled with darker brown spots. 

 Two dull, lead-coloured stripes, enclosing between 

 them the very dark pulsating canal, form the dorsal 

 band ; there are no perceptible subdorsal lines, but a 

 dingy ochreous stripe, of greater or lesser intensity 

 in different specimens, extends along the spiracular 

 region ; tubercles and spiracles black. Ventral sur- 

 face, legs, and prolegs uniformly of the dull brownish- 

 black of the dorsal area. 



Eight days later, on the 12th, they were full-grown, 

 when I again described them as follows : 



About five-eighths of an inch in length, and fairly 

 stout in proportion ; head and second segment horny 

 and glossy ; the former is narrower than the latter, and 

 has the lobes rounded ; body cylindrical, and of uni- 

 form width, tapering a little towards the extremities ; 

 segmental divisions well defined, but the skin has a 

 smoother appearance than when last described, al- 

 though the tubercles are still very conspicuous. 



Ground colour dull, smoky, brownish-black, the 

 faint olive tint now being apparently quite lost ; head 

 and second segment wainscot-brown, freckled with 

 darker brown spots. Two grey lines, enclosing be- 

 tween them the dark, smoky alimentary canal, form 

 the dorsal stripe ; there are no perceptible subdorsal 



