CRABS AND INSECTS. 317 



Among the new and interesting Crustacea met with 

 by us on the coasts, were numerous species of Leucosice. 

 These handsomely-marked creatures generally affect a 

 sandy bottom, and live at considerable depths among 

 Corallines and Madrepores. They are seldom found in 

 muddy or turbid water, but love the deep sandy banks, 

 where they move in a sluggish manner, and seem desti- 

 tute of acute perceptions. Sufficiently protected by their 

 porcelain shields, they want the quick progression and 

 threatening attitudes assumed by many Crustaceans. 

 One of the most beautiful of the species is the Leucosia 

 hoematosticta (Adams and White), which is of a dead 

 white colour, covered with numerous round crimson spots. 



Among the Orthoptera noticed by us among the islands 

 was an apparently new genus, between Tropidinotus and 

 Teratodes, beautifully marbled with crimson, brown, and 

 yellow; a Phyttoptera, of a dirty, dull, green colour, 

 having four dark spots on each elytron ; a Mantis, of a 

 light brown colour ; and a large species of Phasma ; thus 

 again illustrating the curious intermixture of temperate 

 and tropical forms, even among the world of insects. 

 One of the most common Hemiptera was a genus of Cori- 

 cidce, of a delicate emerald green, with two bright golden 

 spots on the body. A genus of Orthoptera, allied to 

 Truxalis, but with the antennae, nearly cylindrical, and 

 the head not so much produced, was a common inhabi- 

 tant of the grassy summits of the hills. 



There is a large and handsome Glow-worm (Lampyris) 

 which hides, during the daytime, under dead leaves and 

 stones ; but which is beautifully luminous during the 

 night. The penultimate segment, slightly gibbous, con- 



