204 ANERASTIA LOTELLA. 



the whole ; this anterior portion is followed (sometimes 

 at an abrupt angle) by the middle part of the tube, 

 which is about half an inch in length and five- 

 sixteenths of an inch in diameter, its hinder end 

 connected with a congeries or cluster of rather 

 rounded and bulb-like terminal pouches, each of 

 which, is about one-eighth of an inch or little more in 

 diameter ; these appendages add a length to the central 

 part of the tube of from three-eighths to three-fourths 

 of an inch; the pouches vary in number from three 

 or four to eight or nine, and are stuffed full with frass, 

 and sometimes appear in a bursting condition ; they 

 are of a pale sulphur-yellow colour, palest next the 

 middle part of the case, which itself is the darkest 

 and brownest portion of the whole construction. 



These cases all lie more or less in a horizontal 

 position, their mouths in connection with the plant 

 stems of Ammophila arenaria, near the crown of the 

 roots, on which part the larvae feed ; and the depth 

 in the sand at which they may be found varies from 

 one inch to even three or four, as the surface shifts 

 according to the action of the wind ; and thus some- 

 times they are quite exposed to view, and at other 

 times they are buried deep by the accumulations 

 blown over them. So great are the ravages made by 

 these little creatures, that a plant is frequently so 

 hollowed out as even to be killed. 



The larva itself is about half an inch in length when 

 full-grown, moderately stout and cylindrical, but the 

 fore-part of the back curves a little convexly down- 

 wards to the head, and the hinder part tapers through 

 the last four segments to the anal extremity; the 

 head is much smaller than the second segment, within 

 which it is often partially withdrawn; all the legs are 

 rather small in proportion, though perfectly developed. 

 In colour it is of a pale, rather subdued orange-yellow, 

 the head pale reddish-brow r n ; down the back is a very 

 faint reddish dorsal line, and there are two equally 

 faint reddish transverse squarish bars on the back of 



