687 
2,3 to 3,2 in the length of the gregarine without the epimerite; maxi- 
mum width of the protomerite 1 to 1,4 in the maximum width of the 
deutomerite. 
Epimerite long and regularly conical, ending in a rather blunt point. 
Protomerite subglobose to oval. 
Deutomerite oval in cephalonts and small sporonts, rather ovoid in 
large sporonts. 
Epicyte thin and rigid. 
Sarcocyte thick over the entire gregarine. 
Endocyte dark gray, of a uniform finely granular structure and 
densely opaque. 
Sporonts all solitary. 
Distinguished from all other species of Stylocephalus by its small 
size and large epimerite without basal structures. 
À very sluggish gregarine found in large numbers in the two spe- 
cimens of the host examined. It has been referred to the genus Stylo- 
cephalus here, although the epimerite does not have the basal enlarge- 
ments common to the epimerites of the other species of this genus, since 
it did not seem advisable to define a new genus without the spores. 
Gregarinidae. 
4) Gregarina guatemalensis sp. nov. (fig. 6). 
Type locality, Quirigua, Guatemala. February 1912. 
Host, Ninus interstitials Esch., a Lucanid beetle. Det. Col. 
T. L. Casey. 
Average associations, 400 u to 490 u. 
Figure 6. Gregarina guatemalensis. "T", primite 229 u, satellite 200 u; ”V”, primite 
243 u, satellite 157 u. 
Habitat, intestine. 
Primite. Length of the protomerite 3 to 3,5 in the total length; 
width of the protomerite 1,25 to 1,75 in the maximum width of the 
deutomerite; maximum width of the deutomerite 1,6 to 1,8 in the total 
length; protomerite globose except in the median line, where it is very 
