S30 ME. K. C. PFNNETT OX [Nov. 20, 



In conclusion, the leading features of these three new species 

 may be briefly characterized as follows : — 



C. torresianus. — Size small. Basement-membrane stout. Cutis 

 without connective-tissue layer, its place being taken by 

 longitudinal muscle-fibres. Vascular head-loop. Neuro- 

 chord-cells. Head-slits remain deep some distance behind 

 cerebral organ. No eyes. Well-marked frontal organ. 

 Excretory system starts behind mouth and has few ducts. 



C. queenslandicus. — Size small. Dorso-ventrally flattened. Cutis 

 packed with rhabdites at certain parts. Vascular head-loop. 

 Neurochoi'd-cells. Head-slits prolonged far behind cerebral 

 organ as very shallow canals. No eyes. Well-marked 

 frontal organ. Excretory system commences at lacunae of 

 cerebral organ and has one pair of ducts. 



C. haddoni. — Size fairly large. Much thickened. Connective- 

 tissue layer of cutis extremely thick. Cutis-glands much 

 reduced. Vascular head-loop. Proboscis without muscle- 

 crosses. No neurochord-cells. Eyes and frontal organ 

 both absent. Excretory system commences some way 

 behind mouth and is without ducts. 



List of Papers referred to. 



(1) Bcrger, O. — Untersuchungen fiber die Anatomie und His- 



tologic der Nemertinen nebst Beitriigen zur Systematik. 

 Zeitschr. wiss. Zool. Bd. 50, 1890. 



(2) . Siidgeorgische und andere exotische Nemertinen. 



Z. Jahrb., Abth. Syst. Bd. 7, 1893. 



(3) . Die Nemertinen des Colfes von Neapel. Berlin, 1895. 



(4) Oudemans, A. C. — The Circulatory and Nephridial Apparatus 

 of the Nemertea. Q. Journ. Micr. Sci. (Supplement), 1885. 



(5) Punnett, R. C. — Some Nemerteans from the Pacific. Willey's 

 Zoological Results, Pt. v., 1900. (lu the press.) 



(6) . On a Collection of Nemerteans from Singapore. 



Quart. Journ. Micr. Sci., vol. 44, 1900. 



(7) Verrill, A. E. — The Marine Nemerteans of New England 



and adjacent waters. Trans. Connecticut Acad. vol. xiii., 

 1892. 



(8) Hubrecht, A. A. W. The Nemertea. ' Challenger' Reports, 



vol. xix., 1887. 



P.S. — Since this paper was read, Prof. Haddon has kindly 

 supplied me with the following notes on several of the living 

 worms : — 



ElJPOLIA DELINEATA (p. 825). 



From reef, Waier, Murray Is. Colour buff, with very fine 

 interrupted longitudinal brown lines, about a dozen in number, 

 on both dorsal and ventral aspect. The lines are more deeply 

 coloured and more definite in form on the dorsal surface. 



