ARCTURUS. 221 



Fam. IDOTEID^F. 



Terminal appendages of the last false legs very large, 

 lamellated, covering all the lower surface of the abdomen, 

 and not projecting beyond the first segment, which is shield- 

 like and very large. 



Gen. 107. AKCTURUS, Lair. 



Body long; the four first pairs of legs lamellar at the end, 

 not fitted for walking or seizing; the three last pair of legs 

 formed for walking. Antennae like legs, and employed in 

 seizing and enclosing the prey : the young of the great 

 Arctic species adhere to these organs by the legs. 



Arctueus longicornis, Sowerby, sp. (Plate XII. fig. 1.) 

 — This species and the two next have the fourth ring of 

 thorax as long as all the others together. The body of this 

 is rugose, and, with the antennae, is nearly an inch long. 



The eggs are red, and adhere to the under side of the 

 largest segment of the body. 



First observed by Mr. T. W. Simmons, entangled in the 

 nets of the fishermen, ofFDysart, near Inch Keith (Sowerby); 

 Cullercoats, Northumberland (Dr. Clarke) ; Falmouth and 

 Firth of Clyde (Rev. A. Norman) ; Berwick (Dr. Johnston). 



