D. BRYCE ON MACROTRACHELOUS CALIJDINJ5. 451 



(38). In one case the embryo hatched out in about seven days. In 

 a crushed specimen I was able to count twelve minute nuclei in the 

 germ-mass. 



Callidina hahita, n. sp. (PI. XXIV., Fig. 5.) 



Sp. Ch. — Moderately large and stout. Skin smooth, very 

 finely stippled, with faint dorsal and strong lateral folds. Corona 

 rather wide (64), about one-fourth wider than collar (51); upper 

 lip rather prominent, with two lobes separated by narrow notch. 

 Eami (24), with thin wing-like outer extension, of rounded out- 

 line ; formula 2+^, ^+2. Foot of three joints, short, stout ; spurs 

 very short, with very broad bases ; toes three, very short. Maxi- 

 mum length (570), average (400). 



In company with C. pleva were a few specimens of this form, 

 which presented an almost similar appearance when travelling 

 about, but always distinguishable by the spurs and by a greater 

 stoutness of ihe body, especially in the pre-anal and anal segments 

 and the foot. Yet when displayed the corona was found to be 

 decidedly narrower, the difference arising partly from a lesser 

 distance between the discs. The rami having the same formula 

 were decidedly longer, and the wing-like margin was narrower. I 

 could not detect more than three toes on the terminal foot joint, 

 one being (if fully protruded) very thick and abruptly truncate. 

 The first foot joint bears a small but distinct dorsal boss, and the 

 next joint, which carries the spurs, has a stout fold of skin pro- 

 jecting over them. The spurs are extremely short cones with 

 unusually broad and thick bases ; the points suddenly attenuate 

 and a little produced. As in C. 2^lena the outer edge is nearly 

 straight, but the inner edges, nearly in contact at the base, are 

 first boldly convex and then apparently slightly concave near the 

 tip. Their extremities stand apart about (22 to 24), the cor- 

 responding figure m plena being (15 to 17). 



I have also found the species in moss from a thatched roof at 

 Deal, and in ground moss from just above tide mark at Bognor. 



Callidina angmta, n. sp. (PI. XXIV., Fig. 6.) 

 Sp. Ch.— Of moderate size and rather slender; corona narrow 

 (29), about equal to collar, but apparently less. The lateral mar- 

 gins of the mouth have externally a prominent, almost pointed, 

 swelling. The discs, rather square in outline, are separated by a 



