176 HISTORY OF BRITISH CRUSTACEA. 



organ ? This seems to be supported by the fact, that blood- 

 discs pass into the hair-like processes on the surface of the 

 flabella in the Brachyura." 



Gen. 73. DARWINIA, Spence Bate. 



First seven joints after head inflated ; upper antenna not 

 before the lower, without secondary appendage. All the 

 feet terminating in simple hooks, not subcheliform. 



Named in compliment to Charles Darwin, Esq., author 

 of ' Researches in Natural History, made during the voyage 

 of the Beagle/ of two volumes on the Cirripedes, and many 

 other celebrated works. 



Darwinia compressa, Spence Bate. — Head produced 

 into a beak; eleventh, twelfth, and thirteenth segments 

 slender and weak, lying compressed beneath the body. 

 Upper antenna stouter and longer than lower. Telson 

 single, lanceolate. 



Banff (Mr. Edwards) j Macduff (Mr. Gregor). 



Gen. 74. IPHIMEDIA, RathJce* 

 Not compressed ; upper antenna without secondary ap- 



* Genus added to our Fauna by Mr. Spence Bate, Ann. and Mag. Nat. 

 Hist. 1857. 



