TWO NKW SPECII'JS OF ONYCHOFHOHA. 585 



Fig. 26. — The renal organ of the uiutli |)air ol legs of Eopeiipatus 

 Horsti. All tiie parts of a typical renal organ are represented here, namely, 

 a dilated bladder, a coiled duct, a well-developed funnel, and a ccelomic end- 

 sac. The dilated bladder above mentioned is not close to the renal pore. 



Fig. 27. — The renal organ and the crural glands of the fourth last pair of 

 legs of Eoperipatus Horsti (male). 



Fig. 28. — The renal organ and the crural glands of the third last pair of 

 legs of Eoperipatus Horsti (male). 



Fig. 29. — The funnel and ccelomic end-sac of the renal organ of the fourth 

 pair of legs of Eoperipatus Horsti. 



Fig. 30. — A section through the fourth leg of Eoperipatus Horsti. 

 Note especially the ccelomic end-sac {c. e.x.), the funnel (/.), and the renal 

 duct, which passes down the leg to the papilla situated on the |)roximal side 

 of the fourth pad. 



Fig. 31. — A section through the outer portion of the renal duct shown in 

 Fig. 26. Note the difference in the arrangement and character of the cells. 

 In the upper portion, which represents the wall of the bladder, the cells are 

 large and extended, and their nuclei are far from one another. Jn the lower 

 portion the cells are small and columnar, and their nuclei are closely packed 

 together, as they are in the layer of cells covering the external surface. Note 

 especially that there is no gradual transition between the two portions above 

 mentioned, but that there is a sharj) rim. 



Fig. 32. — A section of the duct of the salivary gland of Eoperipatus 

 Horsti. Note the difference in the characters of the lining cells. The tall 

 columnar cells with large nuclei at their free end line the portion nearest the 

 buccal cavity. The short cells with small nuclei line the portion nearest the 

 gland. 



Fig. 33. — This figure represents a transverse section passing through the 

 anterior edge of the female genital orifice of Eoperipatus Horsti, the 

 actual opening being found in the third section from the one drawn. The 

 uteri [ut.) ))ass on the outei" side of the nerve-cords {n. c), and are full of 

 spermatozoa {sp.). The nerve-cords («. c.) are widely separate. The heart 

 {li.) is still a well-developed tube lying in the pericardium. The section 

 passes through one of the ridges of the skin — a fact which explains the pre- 

 sence of the large number of papillae. 



Fig. 31. — This figure represents a transverse section passing immediately 

 in front of the last pair of legs of the female of Eoperipatus Horsti. 

 From the nerve-cords («. c), which are still widely separate, nervous strands 

 {n.s.) pass to the ventral organ (v.o.). The heart no longer exists. The 

 most noticeable feature of the section is the large renal organ {r.o.) witii its 

 ccelomic end-sac {c. e. s.). 



