380 



hairs, but on the inner branch, besides the short stiff 

 hairs, a solitary long plumose cilium is attached to each 

 fasciculus of hairs. 



The colour of the animal is a bluish -green, mottled 

 with darker spots of the same, and on the sides, being 

 permanent in position and constant in appearance, are 

 several bright red or scarlet spots. These are not in the 

 skin, but appear to consist of fat globules more deeply 

 seated. One is situated near the infero-posterior angle 

 of the second, third, and fourth segments of the body ; 

 a small one also exists in the posterior lobe of the coxse 

 of the three last pairs of legs, and another near the 

 posterior margin of the three anterior segments of the 

 tail. In the living animal they afford a convenient, and, 

 as far as our experience goes, a certain specific guide. 



Under the microscope the skin is seen 

 to have a granulated structure, while certain 

 arrow-headed spines appear as piercing 

 through some more transparent spots. Upon 

 the anterior segments of the tail is a curved 

 row of minute cilia, each surrounded by a 

 ring, the whole enclosed by a clear areola. 



Dr. Leach, in the Edinburgh Encyclopasdia, states 

 that the females carry their young about with them, 

 after their exclusion. This circumstance has frequently 

 been verified ; but upon the authority of our valued 

 correspondent, Dr. James Salter, we are enabled to com- 

 municate one of the most interesting instances of 

 maternal solicitude yet recorded amongst animals so low 

 in the scale of physical arrangement. 



Dr. Salter says, " On catching a female with live larvae 

 nothing is seen of the progeny till the parent has become 

 at home in the aquarium, when the little creatures leave 

 her and swim about in her immediate neighbourhood. 



