2 EDWARD T. BROWNE. 
PAGE 
Ptychogena antaretica, Browne . : ; : ‘ ‘ « 29 
Mitrocomide. REVISION OF ‘THE GENERA. — Cosmetirella, Cosmetira, 
Tiaropsis, Mitrocomella, Mitrocoma  . j : , , « 2 
Cosmetirella simplex, gn. et spn. . ‘ ; : : : . 84 
Cosmetira frigida, sp.n. . ; : ; : . : : . 385 
Pantachogon scotti, sp.n. . : ‘ : ; . . ‘ » 86 
Solmundella mediterranea (Miiller)  . : , ‘ : “88 
II. ScyPHOMEDUSZ : 
Lucernaria vanhoeffent, spn. . ‘ , ; : , . 40 
Periphylla. Nore on THE SPECIES . ; : . , ‘ we AD 
Periphylla dodecabostrycha (Brandt) . ‘ ; , ‘ : wy 48 
Atolla wyvillii, Haeckel . ; : ; : ‘ ; ‘ - Af 
Desmonema. NoTE ON THE SPECIES : ‘ ; ¢ ‘ . 48 
Desmonema chierchianum, Vanhoffen . ; , : : : . 49 
Desmonema gaudichaudi (Maas) . : , , j ; . 49 
Renniz’s ANTARCTIC SIPHONOPHORES . ‘ : ; : ‘ « Bl 
Diplulmaris antarctica (Maas) . : : : , . » 52 
Diplulmaris gigantea, sp.n. : : : : . ‘ ‘ . 56 
List or Books aND MEMOIRS QUOTED IN THE TEXT . : : ‘ . 58 
DESCRIPTION OF PLATES : . ; , . ; : : . 60 
INTRODUCTION. 
Tue collections of Medus brought home by the ‘ Discovery’ and ‘ Southern Cross’ are 
combined in this report. There was nothing whatever to be gained by keeping the 
collections separate, as they were made in localities not far apart, within two years of 
each other, and both belong to the British Museum. Many of the species are common 
to both collections, and as the collections contained a high percentage of specimens in 
very bad condition, it was a distinct advantage to be able to use the best specimens 
and to pass over the bad ones. Some of the specimens were in such bad condition that 
without a good clue it would have been impossible to determine the genus. 
With such soft-bodied animals as jelly-fishes so much depends, for a good 
description and figure, upon the condition of the specimens. There is a difference 
between a description or drawing of a living Medusa in perfect condition and one based 
upon a contracted and damaged specimen. When dealing with the latter kind one has 
to use a certain amount of imagination, and to make allowances for defects. Although 
some of the figures may not be absolutely accurate in outline, still I have striven to 
make clear the characters of the species. 
