124 Journal of Agricultural Research voi. vi, N0.3 



as the anal body diameter, extends inward and forward. Nothing definite is known 

 with regard to the lateral fields. 



From the well-developed, slightly depressed vulva the vagina leads inward at right 

 angles to tlie ventral surface halfway across the body, where it joins the two symmetri- 

 cally placed uteri. The internal female organs are double and reflexed, and the 

 ovaries, which are rather narrow and packed with small ova arranged irregularly, 

 reach back to the vulva or even beyond. The ellipsoidal eggs are about as long as 

 the body is wide and about two-thirds as wide as long. Their shells are smooth and 

 rather thick. Specimens have been seen in which well-developed embryos existed 

 in the eggs contained in the uteri. Other specimens have been found in which two 

 to three dozen embryos had escaped from the eggs and then devoured the whole 

 interior of the mother's body. The excretory pore is located opposite the cardiac 

 swelling. 



Male formula. ^ ^54 ^l\ '"fo' ^45 ^-^ '^^' The tail of the male diminishes 

 suddenly in diameter from the raised anus in such fashion that at a distance from the 

 anus not very much greater than the anal body diameter it has a diameter only 

 about one-fourth to one-fifth as great as at the anus. At this point, which is immedi- 

 ately behind the posterior group of male papillae, the tail begins to taper rather 

 gradually and somewhat imiformly, and continues so to do to the hairfine terminus, 

 though there is at first a very slight increase in the diameter, so that the tail has the 

 appearance of being very slightly constricted just behind the posterior caudal group 

 of male papillae. There is no spinneret, and there are no caudal glands. The two 

 equal, rather slender, tapering, arcuate, brownish, acute spicula are about one and 

 one-half times as long as the anal body diameter. At their widest part, a little 

 distance behind the cephala, the spicula have a width about one-tenth as great 

 as that of the corresponding portion of the body. From this widest part they taper 

 gently toward the cephalated proximal ends. In the other direction the spicula 

 taper regularly to their acute terminals. The accessory pieces surround the spicula 

 at their distal extremities. The portion of the spiculum surrounded by the accessory 

 piece constitutes about one-sixth of the length of the former. Extending backward 

 from this encircling part of the accessory piece is a median arcuate portion arranged 

 nearly parallel to the spicula and having its proximal end somewhat cephalated. The 

 entire lengtli of the accessory piece, including this median dorsal portion, is about one- 

 third that of the spicula. Like the spicula the accessory pieces are brownish in color. 



The hemispherical-conoid innervated supplementary male organs are located as fol- 

 lows: In front of the anus three pairs, two of which are ventrally submedian and one 

 sublateral ; the sublateral pair is nearly opposite the middle of the spicula, and is on 

 nearly the same zone as the posterior of the two ventrally submedian pairs; the 

 anterior submedian pair is a little in front of the proximal ends of the spicula. Behind 

 the anus the papilla; are arranged as follows: One pair sub ventral or ventrally sub- 

 median immediately behind the anus, two pairs sublateral, and three closely approx- 

 imated pairs of small size, subventral. This latter group of three pairs is slightly 

 farther behind tlie anus than the foremost preanal pair is in front of it. The three pairs 

 do not appear to be uniform in structure, the two anterior appearing to be mere inner- 

 vations, while the posterior one is a distinctly raised innervated papilla like the 

 preanal ones. The posterior of the two pairs of sublateral postanal papillae is a trifle 

 in front of the group of three just mentioned, while the anterior is about halfway 

 between the group of three and the anus. The anterior border of the anus consti- 

 tutes a sort of rudimentary flap with an innervation. The testis is single and rather 

 broad and tubular. It extends forward and is reflexed a short distance behind the 

 base of the neck. The reflexed narrower part of the testis is about twice as long as 

 the corresponding body diameter. 



Habitat: Manhattan, Kans. Found feeding on grasshopper eggs after the eggs had 

 been deposited in the ground. 



