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PROCEEDINGS OF THE NATIONAL MUSEUM vol. lu 



Figures 9-12. — Reproductive systems of three species of the Mesochorea section. 9, 

 Cambarincola ouachita, new species, holotype, Chautauqua Co., Kansas. 10, C. restans, 

 new species, holotype, Benton Co., Arkansas (spermiducal gland mostly concealed by the 

 large prostate). 11, C. mesochorea, paratype. Perry Co., Indiana (ental end of sperm- 

 iducal gland curved mesad and not visible in this aspect). 12, C. mesochorea, new 

 species, specimens from Kinney Co., Texas, outline in dorsal aspect to show complete 

 length of prostate gland. 



clearly shown in any of the specimens, but apparently much like that 

 of the other species, in this case nearly twice the diameter of the 

 spermiducal gland; penial sheath moderately small and confined to the 

 ental third of the bursa as usual. 



Spermatheca very large and robust, consisting of a short, very 

 broad, muscular ectal duct and an ovoid, expanded ental bulb, both 

 of these parts much broader in relation to the size of segment v than 

 in any other member of the genus. No glandular ental process 

 observed. 



Variation. — No appreciable variation in size or proportions wag 

 noted in the type series, all from a single collection. 



Affinities, — This species is clearly a member of the Mesochorea 

 group, and closely related to both of the other two forms, but like 

 mesochorea particularly in the shape and relative size of the prostate 



