— 9311 — 
lateral margin and oval in the central area, and 
have a longitudinal diameter of about 56 microns. 
Near the lateral margin there are dispersed some 
small hairs which are about 12 microns long. The 
derm is chitinized around the anal plates, and of a 
dark color. The anal plates are small, triangular, 
dark, with the interior margin about 0,219 mm. 
long, the anterior-lateral margin 0,162 mm. long, 
and the posterior-lateral margin 0,169 mm. long. 
The specimens studied were all immature, and it is 
possible that the adult specimens have the body and 
organs larger. 
Hab. Cantareira, near São Paulo, on the bark 
of canella poca, an indigenous tree, where it was 
collected by Mr. Ernesto Schwebei. It is neither 
common ncr abundant. The type is incorporated in 
the collection of the Museu Pazlista with the 
number 20092. 
Mesolecaniuin marimoratum n. sp. 
The adult female has the body oval or irreg- 
ular in form, sometimes slightly asymetrical, with 
the dorsal surface rough and furnished wiih small 
radiating furrows. The color is gray mixed with 
dark brown, or chocolate. The largest individuals 
were 6.750 mm. long, 5.500 mm. wide, and 2 mm. 
high. The anal fissure is from 1.400 mm. to 1.500 
mm. long, with the margins contiguous. The dorsal 
surface is covered with small, thin particles of 
white wax. 
Boiled in a solution of KOH, the derm becomes 
transparent, but remains thick, being more rigid in 
the older individuals than in the younger. The an- 
tennæ are degenerated and represented by small tu- 
bercies. apparertly composed of from 4 to É joints, 
and are from 0.107 mm. to 0.155 mm. long. The 
legs are also atrophied, and are represented by 
small tubercles about 0.186 mm. in length, with 
the various joints not dictinctly indicated. The dig- 
itules of the claw are fine, with the distal extrem- 
ity but slightly dilated; those of the tarsus were not 
