52 
PSYCHE 
[June 
Tliorax less inclined, the prothoracic segment from dorsal aspect conspicuous, 
wider than the two following segments, the shield covering most or whole of the dorsal 
surface, and overla])|)ing much of the mesothoraeie segment, anil lateral aspect of 
segment 1, twice wider than long and not emarginate at is caudal margin. Legs the 
same, the coxae of the second and third pairs not as large as those of the foreleg. 
Body of claw .straight. 
Aljilomen the same, less convex dorsad, and more flat ventrad, very prehensile; 
more cornjgate. 
Body markings the same. Median line of head and thorax ochreous, that of 
ahdomen, dusky. Face ochreous, or mostly so, and also most of the occipital region 
of the head. Ceryical shield concolorous with body. Bordered eaudad with Black, 
its caudal edge ochreous, Stigmatal areae larger, conspicuous, glaBrous Black, 
irregular, equal or suBequal on first 4 aBdominal .segments, slightly smaller on the 
fifth, one-third smaller on the sixth, two-thirds smaller on the .seyenth, and on the 
eighth aBdominal segment nuTuite, jiartially concealed in the incision of segment 7. 
Anal shield Black. Proleg orange. Coxae and trochanters concolorous with Body, 
,as is also the mentum. 
First pairs of tuBcrcle arc.ae on dorsum of meso- anti metathoracic segments 
inconspicuous, sometimes ap]Mirently obsolete; the dorsal one on lateral aspect of 
the same segments more prominent, conical. The line of small areae on yentro- 
lateral aspect of aBdomen le.ss distinct. Shields of legs Black. There are three 
small round tubercle areae al.so yisiljle on the caudal margin of the 7th aBdominal 
.segment, on each side of the median line, ju.st eejihalad of the anal shield; they are 
flat, rotato-rugo.se. They are also present on the cephalic margin of that .segment, 
oBseryed when that margin is yisible. 
Ju.st preyious to ])upation the Body of the larya Becomes contracted, and the 
prothoraeic segment swollen; the Body is al.so more convex, and the legs are ai)plied 
close to the yentum. The colors fade slightly. The larva is then perfectly motion- 
less in its cell in the ground. 
Described from a lot of 10 larvae reared under similar conditions. 
Duration of larval in.tlar.t. Three separate lots were reared with this oBjeet 
in view, comjirising a total number of nineteen larvae. I'wo lots were run together 
in field and laboratory and practically agreed in the duration of the different in.stars. 
The third lot (lot No. 2 in the table), was not sujijilied with soil after the third eedysis, 
and jnipated nakedly, ajiparently after the normal period, thus giving the actual 
length of in.star IV. It is interesting to note in this connection that the time of 
eedysis for lots of larvae of the same age was nearly simultaneous, all molting within 
a period of three or four hours. 
