92 



legs spiny and bristly, but with no complete rings of spines. 

 Abdominal segments not very different in length, but their 

 relative lengths not very definite. Pseudopod a flattened trun- 

 cated cone, of homogeneous fleshy texture ; exsertile tip bitu- 

 berculate or bifurcate. 



No. 3075 of my collection, one specimen, is the dead larva 

 given me by Dr. Waters, July 9. Dr. Waters assured me 

 that all the larvas in this lot were luminous, and as they were 

 collected in the evening, they must have been so, yet this larva 

 has a broader head actually and proportionally, short stout 

 mandibles dilated and bent at a right angle in the middle, max- 

 illary palpi not tapering, short and stout, rounded at the end, 

 the third and fourth joints forming a mass of oval outline three 

 times as long as either the first or second ; the labial palpi short 

 and stout, approximate ; and other differences which I will not 

 dwell upon with my present material. 



The black larva? make a third form, of which I find no speci- 

 mens preserved in my collection, and did not take a particular 

 description. They differ markedly in being able or apt to 

 extinguish their light at times, which none of the yellow larvae 

 did, and then to resume it. They are much more active than 

 the others, and smaller. 



What else I have to say refers to the first larvae described. 

 They are quite active, and I should judge from the structure of 

 their jaws that they are carnivorous. I did not succeed in 

 feeding them with meat, earthworms, slugs, larvse, leaves, nor 

 slices of potato. They were in the habit of descending below 

 the surface of the ground in the daytime, or sometimes remain- 

 ing coiled up on the surface. Numbers congregated in the day 

 time under a piece of tin or a slice of potato. They generally 

 formed passages in the earth, with chambers, in which they 

 rested singly. At night they moved about upon the surface. 

 I did not determine whether artificial darkness Avould arouse 

 them in the daytime. At night they were attracted to the side 

 of the jar nearest artificial light. When disturbed, they roll 

 themselves up with the head applied to the ventral surface of 

 about the sixth ring;, and with the terminal segment reaching 

 the back of about the third ring ; the head is then withdrawn 



