Australian Rotifer a. By James Murray. 169 



Callidina microcomis Murray. 



(Described in "Botifera of New Zealand" in a later number of 

 this Journal). This species, first discovered in New Zealand, was 

 afterwards obtained at Katoomba. With C. armillata and C. lepida 

 it makes a group of species, having very wide lumen and minute 

 spurs, at present only known in Australasia. 



Callidina longutyla sp. n., plate IV. figs. 4a-4/. 



Specific Characters. — Small, slender, hyaline ; rostrum slender, 

 antenna minute ; teeth 2 ; rump nodose ; foot 3-jointed ; spurs 

 large, gradually tapering, slightly curved, not shouldered, no inter- 

 space ; toes minute, slender ; stomach with large globules, not 

 pellets. 



Length 300 /x ; width of trunk 50 /j,, length of spur 32 //,. Not 

 seen feeding, but corona small. 



The narrow form, slender rostrum, long spurs, and nodose rump, 

 give a superficial resemblance to Dissotrocha macrostyla, but the 

 antenna is minute, reproduction is not viviparous, and the spurs 

 are thicker, and not shouldered at base. The toes are 3. 



Altogether an animal standing by itself, with no near relatives. 

 It has most in common with C. crucicornis Murray. 



Habitat. — Katoomba. 



Callidina papillosa (Thompson). 



Like the smaller of the two Canadian forms, which is near the 

 type, but has more numerous warts (see " Canadian Rotifera," in a 

 later number of this Journal). 



Callidina multispinosa (Thompson). 



Several diverse varieties of this protean species occurred. 



First Variety. — (Figured in " Rotifera of New Zealand," in a 

 later number of this Journal.) Long-spined ; teeth 4+1 or 5. 

 On each side of the anterior trunk 5 strong curved spines, with 

 large bases ; all other processes small spicules ; on the foot some 

 truncate or furcate pegs. At junction of first and second segments 

 of anterior trunk a short thick spine at each side, pointing forward. 



Habitat. — Katoomba ; confined to Australasia. 



Second Variety (plate V. fig. 10).— Long-spined ; 3 very long 

 setre, with bulbose bases, at each side — one on each of the segments 

 of the anterior trunk, aud one on the foot ; most of the other 

 processes thick conical knobs. Number of teeth not noted. The 

 development of the seta* on the foot is unusual, and this may prove 

 to be a distinct species. 



Habitat. — Queensland. 



