Art, XVI. — JJei^cri2)tioni of some Land Planar tans 

 from Queensland. 



(Plate XI.) 



By Arthur Dendy, D.Sc. 



[Read Novembe: 12, 1891.] 



The specimens described in tlie present conimunication 

 were collected by Professor W. Baldwin Spencer, M.A., on 

 his recent expedition to Sontherii Queensland in September 

 and October 1891, and kindly placed in my hands in a 

 living condition for purposes of description. There were six 

 species represented in the collection, and these belonged to 

 no less than three geno'a, viz., Geoplana (four species) ; 

 Rhyiichodemus (one species) ; and BipaU'iim (one species, 

 probably introduced). Only two of the species are new to 

 science, but one of these, Geoplana rer/ina, is a remarkably 

 handsome worm. The other species are already known 

 from the adjoining colony of New South Wales. As miglit 

 be expected, tlie species altogether show a much closer 

 relationship to those of New South Wales than to those of 

 Victoria. Professor Spencer infoims me, however, that the 

 Planarian fauna was not nearly so rich in the localities 

 visited by him as it is in many parts of Victoria. 



1. Geoplana caerulea, Moseley.* 



This well-known species, the first ever described from 

 Austi-alia, was met with in abundance, some of the si)ecimen8 

 measuring as much as 110 mm. in length by 25 mm. in 

 greatest bi-eadth when crawling. The shape of the body 

 varied considerably in the living animal, the dor.sal surface 

 being sometimes flattened, sometimes siiupl_y convex, and 

 sometimes strongly ridged, as in the closely allied Victorian 



* " Notes on the Structure of several Forms of Land Planariaiis, &c." 

 Quarterly Jourual of Microscopical Science, Vol. XVII, N.S., p. 285. 



