258 R. E. Lloyd : Phosphorescence in JSIarine Animals. [VOL. I, 



that the second elytron of the right side and the second cirrus of 

 the left side and their peduncles are missing. 



This Pol3^chaete was obtained in 25 fathoms of water about 30 

 miles west of Bushire. 



In regard to the source of the phosphorescent lights observed, 

 there can be no doubt that they emanated from the small elytra, 

 but to say that the elytra were actually seen to be luminous would 

 not be quite a true statement. The observation of the exact 

 source of a phosphorescent light in such a case is a matter of great 

 difficulty : to see the elytra it is necessar^^ to examine the animal 

 in a light so strong that the phosphorescence is inappreciable. 

 The nature and distribution of the points of light described above 

 agree exactly with the nature and distribution of the elj^tra, which 

 were examined after the death of the animal. For this reason it 

 is safe to assume that the light actually emanated from the ely- 

 tra, and it is possible that all species of the genus exhibit this inter- 

 esting phenomenon which was observed in this case merely owing 

 to the happy chance of the animal being consigned to formalin late 

 in the evening. 



In order to make further observations on the phosphorescence 

 of marine animals, the trawl was used twice this year at night 

 in deep water, once off North Andaman Island in 235 fathoms, and 

 once off Dondra Head, Ceylon, in 605 fathoms. The results of 

 these stations may be enumerated as follows : — 



Station 374, off North Andaman Isi<e, 235 fathoms. 



Fish. 



Macrurus investigatoris . . . . . . i 



Coloconger raniceps . . . . . . 2 



Ateleopus indicus . . . . . . i j 



Crustacea 



Nephrops andamanica 



Aristeus semidentatus 



Homola megalops 



Pandalus alcocki 



Pandalus martius 

 Munidopsis regia. 

 Heterocarpus laevigatus. 

 Squilla sp. 



I 



1 male, 

 i^female. 

 I 



3 females. 



2 males. 



3 



MoUusca. 



Xenophora pallidula, 

 Verticordea eburnea. 

 Two others ^lnidentified. 

 A Decapod Cephalopod. 



