10 [January, 



to rear on raw meat, hoping to obtain the pupa and imago, but although 

 they fed ravenously at first, they soon ceased to do so, shrivelled up 

 and died. 



They crawled rapidly over my hand, but finding no abrasion, they 

 made no attempt to devour me, 



A small toad swallowed them with avidity at first, but he soon 

 ejected them with every appearance o£ disgust, nor would he eat 

 them again. 



Description of larvcB. — Length, \ — f in. ; shape, conical ; head pointed ; tail 

 much larger than head, and truncated ; body divided into twelve segments, including 

 head ; between each pair of segments 5 — 10 parallel rows of small pointed scales, 

 directed backward until the 6th segment, when the rows of scales are divided into 

 one anterior set pointing forwards, and two posterior sets pointing backwards. 



Mouth cruciform, with four lips, each of which is surmounted bj a minute 

 papilla ; four similar papillae, in two pairs, are seen on the dorsal surface of the 

 extreme end of the tail. The upper pair of lips project beyond the lower. 



Masticatory apparatus. — In three portions: (1) booklets, (2) intermediary 

 portion, (3) body. 



Hooklets. — 2, placed parallel, strongly curved downwards ; bases square, con- 

 nected by their inner surfaces, and articulating posteriorly with the anterior surfaces 

 of the intermediary portion. 



Muscles are attached to the inferior angle of the bases of the hooklets, and 

 serve to protrude, depress, and retract them. 



In a lower plane than the base of the hooklets, two small, irregularly shaped, 

 horny bodies, probably rudimentary lateral masillse. 



Intermediary ^or^/oM.— Shaped like letter H horizontally placed ; articulates 

 in front with bases of hooklets, behind with anterior portion of the body of the 

 apparatus. 



Body of masticatory apparatus. — Shaped like two plough shares, placed parallel, 

 and joined anteriorly. 



Projecting from anterior surface, two long, slender, hamular processes, which, 

 perhaps, serve to guide the muscles which elevate the hooklets. 



Only two muscles can be seen. (1) A long sti'and, passing from the under 

 surface of the " body " to the posterior inferior angle of the base of the claw, for 

 retraction and depression of the booklet, (2) Fan-shaped muscle, spreading out 

 into the lower lips, and inserted into the anterior inferior angle of the base of the 

 claw, for its elevation and protrusion. 



Respiratory apparatus. — On dorso-lateral surface, in the 2nd segment, two 

 structures like minute gauntlets, with five stumpy fingers placed parallel with the 

 long axis of the body, and opening externally by five small pores or ducts. These 

 ducts are the external openings of two muscular tubes, which extend with numerous 

 ramifications throughout the body ; the branches given off divide and subdivide, 

 and assist more directly with those given off from the tube on the opposite side. 

 Towards the hinder end of the larvse these branches are again collected into two 

 tubes, each of which ends in a disc-shaped depression at the extreme end of the 



