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bulletin: museum of comparative zoology. 



of which the apical one is well-developed, but the inner one is scarcely half so 

 long and quite inconspicuous. It bears twelve denticles on the single blade 

 upon which I have been able to make an accurate count. The inner blade 

 bears two accessory teeth, of which the basal one is much the smaller, and 

 reduced to less than half the length of the apical one. 



Legs. All of the three adult females before me bear 31 pairs of legs, but in 

 a well-developed embryo removed from one adult, there are only 30 pairs. 

 I cannot be positive, but suspect that the embryo is a female. From this it 

 would appear very probable that 31 pairs of legs is the commonest number 

 for females of the species, and that variations above and below this mean will 

 be found as is the case among the other species. 



The nephridial tubercles of the fourth and fifth pairs of legs are broadly 

 attached to the third band of the creeping pad, although in some instances 



the connection is slightly narrower than that 

 shown in figure 2, which is taken from the largest 

 specimen. However, the convex form of the 

 tubercle gives it the appearance at first sight of 

 being separated from the creeping pad, although 

 their continuity is readily to be traced. 



The genital opening is exactly between the 

 bases of the penultimate pair of legs. 



Anatomy. The position of the ovaries has been 

 determined from the largest specimen, which 

 contained embryos. The ovaries lie approxi- 

 mately between the legs of the sixth praeanal 

 pair, and their ligaments are distinctly separate 

 all the way to the base of the ovaries, although 

 they lie very close together. The salivary glands 

 terminate between the third and fourth praeanal 

 pairs of legs. 

 Habitat. All three specimens were taken at an altitude of 1800 feet at 

 Grand Etang on the Island of Grenada, British West Indies. 



Fig 2. — Peripatus barbouri, 

 sp. nov. Fifth leg of 

 female showing position 

 of nephridial tubercle. 



The closest affinities of the Grenada Peripatus are evidently with 

 P. trinidadensis from Trinidad, which lies to the southwest of Grenada, 

 its northern coast removed about 90 miles from the southern extremity 

 of the latter. Two species are known to occur in Trinidad, but the 

 second, P. torquatus is very different from P. barbouri and approaches 

 nearest to P. jamaicensis in the large number of legs (41-42 pairs) 

 while P. barbouri has only 31 pairs. Peripatus torquatus is also very 

 conspicuously banded with yellow r just behind the antennae and the 

 color of the dorsal surface is reddish brown. The form and arrange- 

 ment of the papillae is not at all similar, for in P. torquatus there is no 

 gradation between primary and accessory papillae; the latter are 



