164 J. MURRAY 



setae c, d, and e are nearly equal to one another and about 200 p. in length. The 

 dorsal seta over c is about 120 /x long. The fringe on the fourth leg consists 

 of short triangular teeth. The claws measure 30 /t in length. The inner ones 

 have small decurved barbs, which are placed very high, little below the middle of 

 the claw. 



Habitat. Stanley Park, Vancouver, British Columbia. 



In Scottish examples of oihonncc, which are typical in all other respects, the outer 

 claws of the fourth legs bear straight spines near their bases, although Professor 

 Richters makes the absence of such spines one of his specific characters. Although 

 the presence of these spines may be of some positive value, since they are possessed 

 by very few species, their absence cannot be relied upon as a specific character. In 

 E. granulatus (or the animal which I identify as that species) the young which have 

 j>assed the two-clawed stage have no outer barbs, which are acquired at later moults, 

 and increase in number to three in large examples. The same progressive develop- 

 ment of the outer barbs occurs in E. blumi, which may also have as many as three of 

 them on one claw. 



The character is thus shown to be a mark of age, but as the great majority of the 

 species do not have them at any age, when present they make a good confirmatory 

 character. 



The Canadian examples, though of large size, had no barbs on the outer claws, in 

 this respect conforming to Richters' type. It differs mainly in lacking seta b, and in 

 the equalisation of the lateral processes c, d, and e. 



Echiniscus bisetosus, Heinis ? (7) (Plate XX. Fig. 50) 



This is a somewhat doubtful identification, though the animal is certainly very 

 near Heinis's species. The differences are not very serious, and as our animal was 

 small, and therefore probably immature, the processes which it lacks might be 

 acquired later. 



Description. Colour red; length 175 M, exclusive of legs. Plates nine, two 

 pairs, two median, dots obscure. Lateral process one, the seta a, 50 M in length. 

 Dorsal processes over c a seta of 60 M, over d a small curved spine of 8 /*. Fringe 

 of small triangular teeth on fourth leg. No barbs seen on any claws. 



Habitat. Among moss from the sea-shore at Victoria, British Columbia, one 

 example only. 



According to Heinis, E. bisetosus has also a short spine c, and decurved barbs on 

 the inner claws. His figure shows a minute lateral spicule d, of which I find no 

 mention in the text. 



It might be suggested that this small animal could be a young example of 

 E. canadensis (Fig. 47) which was found abundantly at the same place. That 

 species has, however, at all ages conspicuous barbs. 



