PSYCH ID.^. 335 



like eye-sockets, between which the front of the head is 

 rounded and prominent, like a swollen nose ; antenna soldered 

 down on each side of it, and having their tips continued, 

 straight down, into two sharp points just like the tusks of 

 the walrus ; no indication of palpi or tongue or of any organs 

 in the solid brown mask of the face. On each side of the 

 head, on the antenna case, is a black spot. Upper portion 

 of the three following segments shining brown, like the 

 dorsal plates of larvte ; lower portion creamy-white. On the 

 underside of these three segments are minute papilla repre- 

 senting the non-existent legs ; whole remaining body creamy- 

 whitefdevoid of scales, fat, and closely resembling a large 

 maggot. (Described from a living specimen furnished by 

 Mr. W. C. Boyd.) When preserved it changes to a grey or 

 red-brown colour, and shrivels into a shapeless grub, of which 

 even the head loses its curious form. 

 June and July. 



Larva stout, active; fairly cylindrical; living in a case, 

 from which the first four or five segments are protruded 

 when moving or feeding, the remaining portion never volun- 

 tarily leaving the case. Head creamy-white with a large 

 black spot on the upper part of each lobe, these spots 

 surrounded by double lines of dots ; labium black, jaws 

 brown. Second, third, and fourth segments creamy-white 

 with an appearance as of porcelain, from large horny or 

 chitinous plates with which the back and sides are covered. 

 Upon these plates are black-brown longitudinal stripes, of 

 which two, rather narrow, are in the middle of the back, and 

 two, broader, on each side. The fifth and sixth segments are 

 whitish, with small morsels of chitinous plate arranged on 

 their dorsal region. Hinder portion of the body pinkish- 

 white, excessively wrinkled. Legs large and well developed, 

 with the joints conspicuous, whitish, spotted with dark 

 brown, claws light brown. Prolegs very small, resembling 

 minute nipples, except the anal pair, which are larger and 



