MALDANID^. 293 



Arenia and Anclstria being pointed, the former possessing simple bristles, the latter 

 bearing only crotchets in the posterior region. Clymenia, the last genus, has a massive 

 snout. The relationship of several of the last group of genera with the Maldanidge is 

 doubtful. 



M. Sars 1 (1868) found Asychis biceps at 200 fathoms, Maldane pellucida and Praxillella 

 pmtermissa at 300 fathoms. 



Grube 2 (1868) arranged the Maldanidse thus : 



1. The terminal segment infundibuliform, with the anus in the middle. 



(a) The rim of the anal funnel is produced into cirri or processes. Under this head 

 the species are distinguished by the number of the bristle-bearing segments. 



(b) The rim of the anal funnel is smooth. 



2. The terminal segment is devoid of a funnel. Grube included Owenia under this 

 head, but it is now more appropriately placed in a separate family, as he himself did in 

 the ' Philippine Annelids.' 



The characters of the family MaldanisB, Savigny, were revised by the same author 

 in his ' Philippine Annelids ' (1878). 



Grube (1869) in his further critical remarks on the Maldinidse classifies them thus : 



1. Terminal segment funnel-shaped, the anus in the middle of the cup. 



a. All with notches or teeth on the funnel — Bhodine, Nicomache, Axiothea, Praxilla, 

 Glymene. Under this head the author diagnoses the following : 



Glymene zostericola, with sixteen bristled segments. With seventeen bristled 

 segments — Axiothea catenata, Malmgren (four ante-anal segments present), Glymene 

 modesta, De Quatrefages, and G. lyrocephala , Schmarcla. With eighteen bristle-bearing 

 segments — G. uranthus, Savigny (Savigny gives nineteen and four ante-anal segments). 

 With nineteen bristle-bearing segments and five ante-anal — Praxilla prmtermissa, Malmgren, 

 P. arctica, Malmgren, P. Kefersteini, Kinberg, Glymene gracilis, Sars, (7. Muelleri, Sars. 

 Under this section fall such as have only three ante-anal segments, e. g. G. lumbricoides, 

 Milne Edwards (De Quatrefages gives only fifteen or sixteen segments), 0. diadema, 

 Grube, and those with two ante-anal segments, G. digital a, Grube, and G. (Erstedi, 

 Claparede. With twenty-two bristled segments and two ante-anal — G. palermitana, 

 Grube. With twenty-three bristled segments and three ante-anal — G. amphistoma, Savigny. 



b. Clymenidse with a smooth saucer or funnel without teeth — G. urceolatd, Leidy, and 

 G. leiopygos, Grube. 



2. The terminal segment without a funnel, the anus opening dormUy—Ohrysothermis 

 and Sabaco, Kinberg, Maldane, Grube, and Petaloproctus, De Quatrefages. 



Cosmovici (1880) found in Clymenia zostericola at Roscoif four pairs of organs of 

 Bojanus situated in segments four to seven. They are, to judge from the figure, 

 botryoidal structures placed behind the segmental organs, and are highly vascular, cells 

 and granules with a lining of ciliated epithelium composing their structure. The four 

 pairs of segmental organs lie in front of the organs of Bojanus and consist of short bodies 

 with a large funnel. He describes the genital glands as attached near the organ of 

 Bojanus. 



1 'Vidensk.-Selsk. Forhandl./ 1868, (sep. copy) p. 10. 

 3 ' Abh. Schles. Gesellsch./ Breslau, pp. 47—49. 



