BY T. HARVEY JOHNSTON, M.A., D.SC. 245 



'^(p. 532) to be identical with his C. delitescens ; and that 

 (p. 527) Braun's account (1901) of M. trigonocephalum 

 included at least two distinct species, Pronocephalus obliquus 

 Looss (on page 40) and M. trigonocephalum Rud. (on p. 3) 

 and in all probability (according to Looss, 1902, p. 557 

 footnote) includes also a third form, Epihathra crassa Looss. 

 He regarded M. trigonocephalum of Van Beneden 1859 

 and of Walter, 1893, as belonging to Pleurogonius longius- 

 culus Looss (1901, p. 568; 1902, p. 558). 



From the foregoing it appears that Willey's collection 

 really contained the following : — 



i Pleurogonius trigonocephalum (Rud.) Looss. 



ii Cricocephalus alhus (K. & Hass.) Looss. 



Braun believed that Mo7iostomum rubrum K. & H. 

 was also present. Looss (1902) does not refer to this species. 

 40. A Sea Tortoise. 



The following trematodes were identified by Braun 

 (1899) from material collected in the Bismarck Archipalego 

 by Dahl. He dealt with a number of other forms from 

 Chelonians in the same paper. 



i Distomum gelatinosum Rud. (p. 716). 



ii D. irroratum, Rud. (p. 717). 



lii Monostomum album, K. & Hass. (p. 723). 



iv M. rubrum, K. & Hass. (p. 724). 



D. gelatinosum is called Rhytidodes gelatinosus by Looss 

 (1901, p. 563 ; 1902, p. 445) ; D. irroratum becoming Pachyp- 

 solus irroratus (Rud.), Looss (1901, p. 55; 1902, p. 485); 

 and M- album, Cricocephalus albus (Looss, 1902, p. 532). 



Braun (1899) has been misquoted by Dr. Sweet (1908 

 -pp. 459, 460, 463, 464) who includes the following species 

 in error as having been amongst those collected in JSew 

 Britain by Dahl. 



i Amphistoma scleroporum, Crepl. (p. 725). 

 ii Distomum amphiorchis, Braun (p. 719). i.e., Orchid- 

 asma amphiorchis (BraUn) Looss, 1901, p. 560 ; 

 1902, p. 463. 

 ill Distomum anthos, Braun (p. 720)- — Caly codes anthos 



(Braun) Looss, 1901, p. 565 : 1902, p. 458. 

 iv Distomum cymbiforme, Rud. (Braun, p. 720). — - 

 Phyllodistomum cymbiforme (Rud.) BraUn, 1901 



