688 
slightly pointed; deeply separated from the deutomerite; deutomerite 
narrowest at its junction with the protomerite, widening rapidly to the 
middle, beyond the middle narrowing somewhat but remaining wider 
than at its junction with the protomerite, widening rapidly again 
posteriorly to the region of its maximum width which is about one-half 
the length of the protomerite anterior to the posterior.margin, narrowing 
suddenly back of the region of maximum width; posterior margin of the 
deutomerite squared; epicyte thin but rigid; sarcocyte very thick, thickest 
in the posterior portion of the deutomerite where it equals about one- 
fifth of the length of the protomerite; endocyte of the protomerite very 
finely granular, much darker and denser than that of the deutomerite; 
endocyte of the deutomerite quite clear except for several large sphe- 
rical masses contained in it, (these masses are made up of large granules 
and vary both in size and number in different gregarines, some being of 
a diameter equal to about one-fifth of the length of the protomerite; the 
number counted in six gregarines varied from 17 to 23 as follows, 17, 
19, 20, 22, 23, 23); nucleus obscured but easily demonstrated with Iodine 
solution. 
Satellite. Slightly smaller but much the same as the primite; 
maximum width more variable than in the primite; endocyte rather clear 
in both protomerite and deutomerite, that of the deutomerite containing 
fewer of the spherical masses than the primite; nucleus usually apparent 
in the living specimen, 
Associations. Always in association. The length of three ed 
associations are given here. 
Primite | Satellite Total 
Protomerite | Deutomerite | Protomerite | Deutomerite 
72 u 172 u 43 u 114 u 401 u 
86 u 140 u 47 u 140 u 413 u 
86 u 190 u 70 u 150 u 496 u 
This species may be distinguished from Gregarina passalicornuti 
Leidy as it is a broader, stouter, gregarine and much more irregular in 
outline than Leidy’s species. The measurements also show the diffe- 
rence between these two species. The maximum width of the deuto- 
merite goes 1,6 to 1,8 in the total length of G. guatemalensis and 2,6 
in the length of G. passalicornuti; the protomerite of G. guatemalensis 
is contained 3 to 3,5 in the length, and that of G. passalicornuti, 4,5. 
G. guatemalensis was abundant in each of the several host beetles 
examined. 
Actinocephalidae. 
5) Stephanophora (?) crassa sp. nov. (fig. 7). 
Type locality, Quirigua, Guatemala. February 1912. 
