782 



OK THE CH.^TOSOMATID.^ 



like, granular bodies, staining deeply blue with bsematoxylin. 

 Similar structures appear to be present in the female, connected 

 with the ventral ridge of protoplasmic tissue. 'I hey probably 

 havH some relation to the locomotor setae, though T cannot find 

 anv trace of communication between them. 



r V pe-R p eci mens, Nos. W, 452, 453; in tlie Australian 



Museum, Sydney. 



Chretosoma Ja/catum, n.sp. Measiuements in nims. 



Totallength 



Length of head 



Length of trunk ... 



Length from tip of tail to anterior end of 

 rows of ventral seta3 



Length from tip of tail to anus 



Length of tail 



Length from neck to 9 pore 



Greatest width of head 



Greatest width of trunk ... 



Width at level of ventral setae 



Width at level of neck-constriction 



Length of rostrum ... 



Length of setffi on rostrum 



Length of hairs on head ... 



Length of ventral setae 



Number of sette in ventral rows — outer... 



Number of setiu in ventral rows — inner... 



CH.ETOSOMA HASWELLi, n.sp. (Plates xlvi.-xlvii.). 

 In 1914, Professor Haswell obtained a few individuals of this 

 species from material collected along the shores of Port Jackson 

 and Broken Bay, N.S.W. These were the first of the Chhtoso- 

 matidit found south of the Equator. In the following year, he 

 drew my attention to them, and afforded me the opportunity of 

 examining these and other specimens, whicli he subsequently 

 collected. During the last twelve months, I have myself col- 

 lected some fifty of the same species from various localities round 

 the shores of these bays, and along the ocean-coast in the 

 vicinity. Ch. haswelli appears to be the most generally dis- 



