69 



animal, though not a lynceus, as supposed by Latreille ; 

 for this is afresh-water animal. Latreille considers that 

 the luminous globules found in a congeries in the poste- 

 rior part of the shell were ova. Captain Horsburgh 

 describes a similar phosphorescency off Malabar during 

 the monsoons as being " a regular white colour like 

 milk, and did not continue above ten minutes." A 

 similar phenomenon appears to be frequent in the 

 Ban da seas. 



Captain Tuckey says, that in the Gulf of Guinea 

 the ship " at night seemed to be sailing in a sea of 

 milk." The molluscae that were taken up here and 

 examined were pellucid salpcB, and squillce : of the 

 genus cancer thirteen different species were taken; 

 eight of these were crabs, and the rest shrimps. 



Mr. Franklyn, a Russian gentleman, and who cir- 

 cumnavigated the globe in one of the late voyages of 

 discovery, tells us that cceteris paribus the phosphores- 

 cence of the sea is brighter in high latitudes than in 

 tropical climes. 



