62 EDWARD T. BROWNE. 



PLATE V. 



FIG. 1. Desmonema gaudichaudi. A tentacular and two rhopaliar lobes on the margin of the umbrella, 

 showing the canal system in the lobes and the bases of the tentacles. Nat. size. 



FIG. 2. Desmonema chierchianum. A tentacular and two rhopaliar lobes on the margin of the umbrella, 

 showing the canal system in the lobes and the bases of the tentacles. Nat. size. 



FIG. Z. Lucernaria vanhoeffeni. The interior of the peduncle, x 2. ta., tseniola with gastric fila- 

 ments (/.) in the lower part of the stomach (st.), and terminating in bulbous enlargements ; 

 ca., cavity of the peduncle in communication with the stomach ; Jc., blind branched canals from the 

 cavity of the peduncle in the wall of the adhesive foot (ad.f.~) ; mv., wall of the umbrella. 



FIG. 4. Luccrnaria vanhoeffeni. Tentacles with adhesive pads (ad.), x 1C. 



FIG. 5. Lucernaria vanhoeffeni. Portion of the genital bands, showing the elongated sacs containing 

 gonads. X 4. 



PJQ. c. Lucernaria vanlioeffeni. Diagram of a longitudinal section through a genital sac. ov., ova or 

 ovary ; gd., genital duct. 



PLATE VI. 

 Diplulmaris antarctica. 



FIG. 1. Ephyra stage ; showing an early stage of the development of the canal system and the tentacles. 

 Oral side, x 15. 



FIG. 2. Ephyra stage later than fig. 1, showing the circular canal and the commencement of the branching 

 of the rhopaliar canals. Oral side. X 5. 



FIG. 3. Portion of the margin of the umbrella of an adult, showing the anastomosing of the canal system. 

 Oral side, x 2. 



FIG. 4. Sense organ. Aboral view, x 11. 



FIG. 5. Sketch of a gonad lying on the sub-umbrella. Oral view, x 2. 



FIG. 6. Tentacle of an adult. Lateral view, x 3. 



PLATE VII. 



FIG. 1. Periphylla dodecabostrycha. Photograph of Dr. Wilson's sepia drawing. Reduced nearly 

 2J times. 



FIG. 2. Atolla wyvillii. Photograph to show the wide furrows round the margin of the central disc. 

 About natural size. 



FIG. 3. Lucernaria vanhoeffeni. Photograph showing a lateral view of the medusa. About natural size. 



FIG. 4. Lucernaria vanhoeffeni. Photograph of a specimen cut longitudinally to show the interior of the 

 umbrella and the stomach. Slightly larger than natural size. 



