ioo DISCOVERY REPORTS 



Chun (18880) said 1 that the postembryonal stages of Hippopodins which he had previously observed 

 from considerable depths in the Mediterranean, he had succeeded in capturing in an unbroken series 

 at the surface near Orotava, Tenerife. He gave a good description of a stage that he had been able 

 to study on three occasions in detail, and figured it well on p. 1 150. He did not at that time figure the 

 other stages of development because he intended shortly afterwards to publish a full description of 

 the postembryonic development of Hippopodius. It was not, however, for twenty-five years that he 

 did so (1913, p. 35), though he had meanwhile published two figures of young stages. The sequence 

 of developmental stages can be seen in the following published figures: Metchnikoff (1874), P^ ri > 

 figs. 5-8; Chun (18886), pi. 2, figs. 1, 3; Moser (19240), pi. 3, fig. 2; Chun (1913), figs. 5, 6; Chun 

 (18970), fig s - °^> 6c; Chun (18880), p. 1150; Chun (1913), figs. 7, 8. The relationship of the two 

 budding zones in the adult was best illustrated by Chun (18970, n g- IJ )5 an d Richter (1907), pi. 28, 

 fig. 27. 



Vogtia Kolliker, 18536 



The four specific names spinosa, pentacantha, serrata, and glabra are used in the sense defined by 

 Bigelow & Sears (1937), except that in pentacantha there are sometimes spines around the base of the 

 median dorsal prominence, so that the facets are not entirely smooth. There is a good deal of variation 

 in the amount and kind of spinosity from specimen to specimen, and probably from the first to the 

 last of the series of nectophores on one specimen, but I agree that there are four species. None of 

 the species were found in the Red Sea area, but Vogtia glabra was taken by Mr Fraser-Brunner in 

 the Gulf of Aden. 



Some notes on the larvae of V. serrata will be found on pp. 73-77 in the special section on post-larvae 

 of Prayidae and Hippopodiidae. 



Vogtia glabra Bigelow, 1918. (Plate IV, fig. 2.) 



The following interesting observation on phosphorescence in this species was made by Mr P. M. 

 David: 'When bringing the 70 cm. net inboard after the 1000-750 m. haul at ' Discovery II ' Station 

 2890, an animal was observed phosphorescing on the \ in. netting above the closing band. It was 

 seen to be part of a siphonophore, and was transferred to a small jar of sea-water. When taken into 

 a dark cabin, it was seen to luminesce when prodded, or when the water in the jar was agitated; the 

 light which was greenish-blue lasted several seconds before fading. The animal broke up after a while, 

 but the component parts were still able to light up, the light seemed to be evenly spread throughout 

 each part.' 



The preserved specimen consisted of ten nectophores of definitive shape and four buds, three of 

 them still attached to the contracted stem and appendages. All the nectophores, the largest of which 

 measures 17 mm. in diameter, are now quite transparent. 



The only other observation on luminescence in Hippopodiidae of which I am aware was made by 

 Korotneff (1884, pp. 281, 282) on Hippopodius hippopus. He correlated luminescence by night with 

 a smoky colour by day. 



Sulculeolariinae subfam. nom.nov. 



Galettinae Stechow, 1921 



Sulculeolaria Blainville, 1830 (no published specific names or figures cited). 



Type species S. quadrivalvis Blainville, 1834 (figured). 



Galeolaria Blainville, 1830 (preoccupied). 

 Galetta Stechow, 192 1. 



1 English translation in Ann. Mag. Nat. Hist. London (6), III, p. 214, i88q. 



