96 Mr. Montagu's Description of several Marine Animals 



The C. Saltator is without doubt the animal referred to by Pallas, 

 and this con firms the opinion that Gmelin has confounded it with 

 his Cancer Locusta, having quoted both the Oniscus Gamniarellus 

 and 0. Locusia of that author for it. That it is Pennant's C. Lo- 

 cust a there can be little doubt, as he particularly mentions the 

 quality of leaping, a power denied to the other species. 



It may be suspected that the C. Saltator is amphibious, or per- 

 haps only sub-aquatic, residing chiefly under the moist sand, about 

 high water mark, or concealing itself beneath the various matter 

 ejected by the sea, not only to feed, but to avoid the powerful 

 rays of the sun. The most cursory observer cannot have passed 

 unnoticed the multitudes which are seen skipping about in all 

 directions upon our sandy beaches in a summer evening. 



It appears very extraordinary that two insects so greatly dis- 

 similar as this and the C. Locusta should have so long been con- 

 founded, for in neither habit nor manners do they in the least 

 agree. 



Whether the greater part of these commit themselves to the 

 deep during the colder season has not been ascertained; but as it 

 never has occurred to me at any time of the year in the water, I 

 am inclined to believe they burrow deep under the sand, and 

 occasionally come up, as some are to be met with at all seasons 

 when the weather is temperate. 



Cancer Gammarus littoreus. 

 Tab. IV. Fig. 4. 



Pulex marinus. Baster Op. Subs. ii. p. 31. t. 3. /. 7. 8. 



Body smooth, glossy, with twelve compressed joints : antennae 

 four, the upper pair very short ; the lower pair half as long as 

 the body, the anterior half composed of between twenty and 



thirty 



