282 ENTOMOLOGICAL NEWS. [June, ’08 
LARVA. 
The larve are extremely sluggish and have the habit of roll- 
ing themselves up in the decaying material and feigning death 
when disturbed. They are not nearly so greedy as the other 
forms, though they feed almost continuously. Occasionally 
they leave the culture and climb up along the sides of the ves- 
sel by carrying along with them a film of water. Specimens 
have often escaped from my watch-glasses and crawled about 
on the table until quite dry, but on replacing them in the glasses 
they would revive. 
Tuldae 
rm 
~ 
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- 
av | 
200 000 OG clove 
1B G4/Poe 
Fic. 2.—Dorsal and ventral view of larvae and ventral view of pupa, 
Ps. domestica, n. sp. (X. 20). 
The larve attain a length of from 6 to 7 mm. and a breadth 
of .8 mm., and are slightly flattened. The thoracic segments 
and the first abdominal have each two distinct annuli, while the 
next six abdominal segments have each three. Each annulus, 
with the exception of those of the first.abdominal segment, 
bears a distinct plate on its dorsal surface. There is some 
variation in the dorsal plates on the first three abdominal seg- 
ments, and they are usually much reduced, though, as a rule, 
each annulus of the second and third segment bears a small 
