ONUPHIDID^B. 403 



2. NOTOCIKRUS, Sp. 



Synonym. 

 1903. Notocirrus sp., Mcintosh. Ann. Nat. Hist., ser. 7 ', vol. xi, p. 565. 



Another small and very active species was procured under a stone in a tide-pool at 

 Herm, but unfortunately it has been lost. The head was smoothly rounded in front, and 

 of a brighter reddish-orange than the rest of the body, which was dark orange, with the 

 dorsal blood-vessel in the centre. The segments appeared to be minutely granular as if 

 punctured. The tail terminated in two longer and two shorter papillae. 



Sub-Family Onuphidhle. 



Kinberg 1 made the Onuphaea the first family of his Eunicea, characterized by having 

 seven maxillae, part Ii edentate, tentacles five, antennae two, palpi two, and a single 

 buccal segment. He grouped the genera according to the condition of the branchiae, 

 which are plumose in Diopatra, pectiniform or cirriform in Onuphis. 



No example of the genus Diopatra, a southern type, has hitherto been met with in 



Fig. 83. — General arrangement of the muscles in the body-wall of Hyalinoecia tubicola, O. F. M. x 21. The 

 vertical bands of fibres passing by the sides of the nerve-cords to the sides of the alimentary canal are 

 diminishing. The single large neural canal toward the ventral edge of the nerve-cord is conspicuous. 

 The oblique muscles arise inferiorly at the sides of the nerve-cord. 



British waters, though it may yet be found in the neighbouring parts of the Atlantic. 

 As Claparede points out, the existence of eyes is not general. 



Grrube 2 followed Savigny in grouping the Onuphidae under the Eunicea. 



The Onuphidae follow the Eunicidae in Levinsen's classification (1883), and apparently 

 with good reason, and Benham likewise includes the group under the Eunicidae. 



Hacker (1896) 3 quotes Wilson as alluding to a stage of Diopatra cuprea with five 

 segments, and this is a non-pelagic larva, bred in the gallery where the eggs are laid. 

 He gives a detailed account of the histology of the pelagic and other larvae. 



1 < Ofvers. af. K. Vet.-Akacl. Forh./ 1864, No. 10, p. 559. 



2 < Fam. der Annel./ p. 44, 1851. 



3 'Zeitschr. f. wiss. Zool./ Bd. Ixii, p. 98. 



