THE MONONCHS 



in proportion. Three caudal glands are present. Each uterus is capable of carrying 

 one and possibly two eggs at a time. These are about one and one-fourth times as 

 long as the body is wide, and half as wide as long. The tail of the male tapers 

 more rapidly at first than that of his mate. Supplementary organs 17, prominent, 

 closely approximated, equidistant, occupying a space equal to one and one-half 

 times the length of the tail. The spicula are about twice as long as the anal body- 

 diameter. 



Found at depths of from about 200 to 1200 feet in Lakes Manapouri and Wak- 

 atipu, New Zealand. 



1.6 8. 17. <63' 26 9<V 



1.4 



5.2 



52. M. regius, n. 



sp. Amphids rela- 

 tively small, con- 

 nected with a nar- 

 row, internal, appar- 

 ently tubular ele- 

 ment passing back- 

 ward past the base 

 of the pharynx. 

 Pharyngeal muscles 

 strongly developed, 

 extending backward 

 from the base of 

 the lips to the body 

 wall behind the 

 pharynx. Each of 

 the six lips with a 

 flat, flap-like outer 

 accessory part, 

 which is longitudi- 

 nally striated at the 

 base. Onchi sub- 

 equal, the dorsal 

 Found about the roots of plants, Arlington Farm, Virginia, 



X750 



slightly the stronger. 

 U. S. A. Fig. 63. 



53. M. bathybius Micoletzky. In the figure the onchus labeled "submedian" is 

 really a subdorsal onchus. In addition to this subdorsal onchus there are still 

 others, probably 4.9 t o. 30 . 63 Y 8 7. 

 2 to 3 pairs, which 3.3 3.6 3.9 3.4 2.5 ' 6 mn 

 in profile view have a double contour. It remains 

 uncertain whether the other markings seen on the 

 wall of the pharynx are projections or pores. 



The author considers this species to be related to 

 M. gerlachei de Man, the lip region and vestibule of 

 the two species being similar. However, the armature 

 of the pharynx in the two species is quite different. 



Found in mud at a depth of about 300 feet in the 

 Atter Lake, Austria. The description and figures rest 

 upon the examination of a single immature specimen, and it is probable that the 

 examination of further specimens will improve our knowledge of this interesting 

 form. Fig. 64 (after Micoletzky). For 53b, M. fasciatus, n. sp., and 53c, M. 

 similis Cobb, see Appendix, p. 184. 



