681 
The gregarines were studied alive in the alimentary fluids of the 
host and also in normal salt solution. Some cleared preparations were 
made. Unless otherwise stated the drawings are by camera lucida from 
living specimens. 
Stenophoridae. 
1) Stenophora cockerellae sp. nov.3 (figs. 1, 2 and 3). 
Type locality, Quirigua, Guatemala. February, 1912. 
Host, Paraiulus sp. nov., a Diplopod. Det. Prof. R. V. Cham- 
berlin. 
Average specimens, 500 x to 800 u; smallest observed, 186 u; 
largest, 850 u. 
Habitat, intestine. 
Length of the protomerite in specimens over 400 u, 14,5 to 17 in 
the total length (8,3 to 14 in individuals under 400 «); maximum width 
of the protomerite 1,75 to 2 in the 
maximum width of the deutomerite; 
maximum width of the deutomerite 
4,5 to 7 in the total length. 
Protomerite more or less globose 
and capable of being partly telescoped 
by the deutomerite; region of its ma- 
ximum width usually in the posterior 
half, less frequently near the middle; 
anterior margin regularly rounded 
except for a small, median, truncate 
papilla which generally extends be- 
yond the rest of the protomerite for a 
distance equal to from one-sixteenth 
to one-tenth of the width of the pro- 
tomerite ; this papilla may be reduced 
to about one-twentieth of the width of 
A: prunes sa st ee Dane) Figure 1. Stenophora cockerellae. 
into a very mobile, globose structure, A" 186 u; ”B”, 600 u; "O", 786 u. 
equal to about one-sixth of the width 
of the protomerite in length; sie portion of the protomerite 
slightly constricted in the region of the posterior margin of the contained 
endocyte; septal region thick, part of the time forming a distinct collar 
between the protomerite and deutomerite, collar almost or entirely 
wanting in large specimens when the papilla is not expanded. 
Deutomerite elongate; region of its maximum width, in large indi- 
8 To Mrs. T.D.A. Cockerell. 
