70 ILLINOIS BIOLOGICAL MONOGRAPHS (280 



STENOPHORA ELONGATA Ellis 

 [Figure 28] 

 1912 Stenophora elongata Ellis 1912 :685-6 



Stenophora: Sporonts solitary, very elongate. Length 200 to 300/* 

 (average). Minimum length 21/x,; minimum 390/t. Width of deutome- 

 rite not given. Length of protomerite : total length : : 1 : 18 to 1 : 26 ; 

 width protomerite : width deutomerite :: 1 : 1:6. Protomerite more 

 or less pentagonal (seen from side), truncate, wider than long. Con- 

 striction at septum distinct. Deutomerite widest in anterior third, pos- 

 terior end rounded. Endocyte of protomerite dense, opaque, dark gray ; 

 of deutomerite gray, very dense. Nucleus not visible in vivo, spherical, 

 one half to seven eighths width of deutomerite. Cyst and spores un- 

 known. 



Taken at Quirigua, Guatemala. Host: Orthomorpha coarctata 

 (Saussure). Habitat: Intestine. 



STENOPHORA IMPRESSA Watson 



[Figure 53] 



1915 Stenophora impressa Watson 1915:29 



This parasite was found to be very common in the intestine of Paraju- 

 lus impressus (Say), one of the common small diplopods found at Ur- 

 bana, Illinois. 



The sporonts are isolated, none being associative. They are elon- 

 gate ellipsoidal in shape, widest through the central portion of the deu- 

 tomerite or at the beginning of the posterior two thirds. The protomerite 

 is conical, dilated just above the base and tapering rather acutely but 

 with a blunt point at the apex. The widest part is some little distance 

 anterior to the septum, the constriction at the septum being conspicuous 

 but not deep. The length of the protomerite is about one tenth of the 

 total length of the sporont. The deutomerite broadens gradually from 

 the septum to the central region and then as gradually becomes nar- 

 rower, ending in a very blunt extremity pf much the same general shape 

 as the anterior end of the protemerite. At its widest part, the deuto- 

 merite is about twice the greatest width of the protomerite. 



The endocyte is gray with no trace of tan. The protomerite con- 

 tains a few large granules of more or less transparent protoplasm and 

 the deutomerite content is finely granular, homogenous, and often so 

 dense as to appear black in transmitted light. The epicyte is thin, trans- 

 parent, of even width throughout, and is longitudinally striated. At 

 the anterior end of the protomerite there is an invagiaation of the epi- 



