D. BRYCE ON MACROTRACHELOUS CALLIDIN^E. 447 



segment than usual, and the foot one less. The spurs arise 

 at a distance from each other of almost twice their length, and the 

 segment bearing them has dorsally a transverse skin fold, which 

 hides about a third of their length, so that they appear to be only 

 (11) long. They are perforate, and can be moved towards each 

 other like forceps. The four toes of the foot are all short, but 

 the central pair are smaller than the outer. There are four mucus 

 glands, which unite and give off six ducts leading to openings in 

 the two spurs and the four toes. Of vibratile tags six were found 

 on each side. The yolk-mass of the ovary contains eight large 

 round nuclei, and the germ-mass usually four minute nuclei. The 

 short antenna is two-jointed. 



I have little to add to these particulars. In one example the 

 corona measured (102), the collar (71), the neck (55). The eggs 

 which, laid by isolated specimens, I could identify as belonging to this 

 species were broadly oval, about (80) long by (63) broad, the surface 

 having slight prominences, and the smaller end being bluntly 

 pointed. The whole egg was of a bright chitinous brown. The 

 embryo was fully developed in about seven days. I have met with 

 the species in wall moss from Clapton and from Bognor, and in 

 ground moss from Arundel. 



Callidina Klirenhergii, Janson.'* 



Sp. Ch.— Body colourless or reddish, with slight thickening 

 below mastax. Rostrum broadly truncate, the sheath drawn out 

 into lateral auricles. Spurs as long (8-10) as width of their seg- 

 ment, with small interstice. Rami (20-22), formula, |. Maximum 

 length (360). 



The body is stated to consist of 11 segments, of which four 

 belong to the head and neck, four to the trunk, and three 

 to the foot. The chief mark of the species is the structure 

 of the rostrum, which is quite similar to that of the Adinet^. 

 At its anterior end the rostral sheath is dorsally bent broadly 

 downwards, and thus, in lateral view, forms a little "hook." 

 The ventral surface of this sheath is very deeply excavate; 

 there only project two corners towards the centre and form with 

 the dorsal arch a pair of lateral auricles. In this sheath thus 

 modified are placed the two small rostral lamellae, from whose lower 

 surfaces arise the cilia. Frequently several long stiff cilia protrude 

 from the auricles, but from their extreme delicacy are difficult to 



