32 MR JAMES MURRAY 



Length up to 600 M, pharynx (of small example) 50 P. long; claws 24^ to 34 M; 

 those of first legs shortest and of last legs longest. 



The granules or tubercles were hemispherical, and appeared of soft texture. Owing 

 to their bad state of preservation, nothing could be inferred from this as to their original 

 condition. 



The previously described tubercled species of Macrobiotus are M. tuberculatus, M. 

 sattleri, M. ornatus, M. papillifer, M. annulatus, M. granulatus, M. crenulatus. 



M. granulatus and M. crenulatus are sufficiently separated by the wrinkled or 

 spiny crescent in front of each pair of claws. M. tuberculatus, M. sattleri, M. 

 papillifer by the large size of the tubercles, which are symmetrically arranged in 

 longitudinal and transverse rows. There remain only M. annulatus and M. ornatus, 

 which have the tubercles relatively small. M. annulatus has the tubercles very 

 regularly spaced, falling into definite transverse annulse, following the segments, and 

 extending also over the ventral surface. 



M. ornatus, var. verrucosus, has the thickenings in the pharynx of a different form, 

 that of nearly round nuts. The ill-understood M. oberhauseri, of which such conflicting 

 accounts are given, is sometimes, according to EICHTERS (10), partly papillose. M. 

 asperus may be distinguished from it by the structure of the claws. Both pairs are 

 alike, with one of each pair nearly twice as long as the other. M. oberhauseri has the 

 elongate claw on only one pair on each foot. From all of those species there are other 

 differences which it is needless to detail. Fairly abundant when the mosses were first 

 examined, no example has been found recently. The skins which I tried to preserve 

 became quite collapsed, shapeless, and unrecognisable. 



Macrobiotus, sp. (Plate III. figs. 7 'a to 7d.} 



Description. Large, very similar in claws and pharynx to M. asperus, but skin 

 not granular. One pair of claws is a little larger than the other. The teeth are nearly 

 straight, but abruptly bent near the throat ; their bases diverge widely. Four eggs 

 were found in one skin. It reaches 570/u in length. 



Macrobiotus 1 *. sp. ? (Plate III. figs. 8a, 8b.) 



Description. Small, claws of two pairs joined only at base, smaller pair of 

 nearly equal claws, larger pair with one very long claw. Eggs elliptical, laid in 

 the skin. 



As this species is only known from skins containing eggs, the description cannot be 

 completed. The claws are of what I take to be the oberhauseri pattern, not, as 

 originally described (1), quite separate, but joined at the base. This arrangement 

 resembles the Dipliascon claw, as I understand it, but the mode of union of the two 



(ROY. soc. EDIN. TRANS., VOL. XLV., 330.) 



