293 DISCOVERY REPORTS 



and was estimated to have been 30 mm. or more when alive) were larger in proportion 

 to the rest of the body than those of the present specimens. The branchiae of the three 

 Discovery specimens are retracted and scarcely show in the illustrations, and they are as 

 different from one another as they are from the type. The example from St. 71 has a sort 

 of lateral gill which occupies the whole circle above the tail and seems to be longest in 

 front, i.e. ventrally, which is strange. 



The aspect of these animals varies extraordinarily according to the manner in which 

 they have been prepared. When collectors preserve them without the use of anaesthetics, 

 one can frequently do little or nothing with them. Mme Pruvot-Fol (1924, pi. xvi, 

 figs. I and 2) has shown how different the appearance of Pneumodermopsis canephora, 

 Pruvot-Fol, is when drawn from specimens fixed with and without anaesthesia. The 

 ventral and dorsal aspect of the specimen from St. 72 and two enlarged suckers are 

 shown on Plate XXXIX, figs, i and 2, and the contracted specimen from St. 239 is 

 shown on the same plate in figs. 3 and 4. 



Distribution. 44° 19' N, 11° 19' W., 0-4900 m. (Pruvot-Fol, 1926.) 



Genus Schizobrachium, Meisenheimer, 1905 



Schizobrachium polycotylum, Meisenheimer, 1905. 



St. 71. Young-fish trawl, 2000 (-0) m. : i specimen. 

 St. 78. Young-fish trawl, 1000 (-0) m. : i specimen. 

 St. 89. Young- fish trawl, 1000 (-0) m. : i specimen. 

 St. 107. 4-5 m. tow-net, 850-950 m. : i specimen. 



The four specimens of this species were taken over a wide area in the South Atlantic 

 and Southern Ocean, from 33° S to 45° S, and from north of the Falklands to between 

 Bouvet Island and Cape Town. All have the branching sucker-bearing arms beautifully 

 extended^ and their total length is from 17 to 30 mm. Meisenheimer (1905, p. 51) defines 

 the genus Schizobrachium as follows: " Korper langgestreckt, in der Mitte bauchig 

 erweitert, am Hinterende zugespitzt. Auf der Riickenseite mit wohlentwickeltem 

 Driisenfeld. Fuss: Hinterlappen wohlentwickelt, abgestumpft. Seitenlappen massig 

 stark, ohne gefiiltelten Mittelhocker. Kiemen : Seitenkieme geschwunden, Endkieme auf 

 einekleine Langsfalte an derVentralseite des hinteren Korperendes reduziert. Saugnapfe 

 in sehr grosser Zahl 2 machtigen, sich dichotomisch verastelnden Armen aufsitzend, an 

 Grosse von der Basis der Arme bis zu deren feinsten Verastelung stetig abnehmend. 

 Radula mit Mittelzahn. Hackensiicke ausserlich von bedeutendem, walzenformigem 

 Umfang, im Innern zum grossten Telle aus einer soliden Muskelmasse bestehend, in 

 deren vorderem, nach der Mediane gewendeten Abschnitt die eigentliche Hackenscheide 

 mit einer grosseren Zahl von Hacken gelegen ist. After auf der rechten Seite gelegen, 

 ziemlich weit nach hinten verschoben. S.polycotybim. Mit der Merkmalen des Genus. 

 Radula 'j-i-'j. Mittelzahn klein, mit 2 scharfen Spitzen. Seitenzahne mit starker Basal- 

 platte und langem, spitzem Fortsatz, nach den Seiten an Grosse abnehmend. Masse: 

 Lange des Korpers 32 mm., Breite 11 mm." 



1 These specimens were anaesthetized with cocaine. 



