1596 CRUSTACEA. 



De Haan ; and we, therefore, propose to change it to Dairilia, and 

 have so employed this name in the latter part of this volume. 

 Page 1046. — Labidocera of J. Lubbock (Ann. and Mag. Nat. Hist., Jan., 1853 

 [2], xi. 25), does not differ from Pontella. The figure represents 

 the inferior eye, with the same form and position as in this genus 

 (that is, projecting from the under side of the head); and in other 

 respects it is identical with Pontella. The species Labidocera Dar- 

 winii is from the Atlantic, 38° south, in the open sea off the coast 

 of Patagonia. 



In the March number of the same Journal (1853), Mr. Lubbock 

 proposes two subgenera under Labidocera, which do not appear to 

 be based on important characters. The form of the posterior pre- 

 hensile legs of the male, on which he rests for one characteristic, is 

 exceedingly various, and if adopted as subgeneric, the subdivisions 

 will become very numerous, and altogether at variance with correct 

 natural affinities. Mr. Lubbock's three species of Labidocera are 

 referred to three distinct subgenera. 



" 1046. — Iphionyx, Centropages, Agetus, Thaurnaleus, and Thaumatoessa, 

 are names given by Kroyer to oceanic genera of Cyclopoidea, in a 

 recent number of his Tidskrift, not seen by the author (vol. ii. 2d 

 series, 582-595). 



" 1203. — The genus JEJdwardsia of Costa (loc. cit.) is a true Sapphirina, and 

 his figure represents well the general structure of the species. 



" 1308.— The genus Nesidea of Costa (loc. cit.) is like Cy there in its struc- 

 ture and legs, except that it is said to have a sucker-mouth, and it 

 is thus figured with some details by Costa. This Cyproid form of 

 sucking Crustacea adds a new type to this section of the Entomo- 

 **. straca. 



1393. — The statement that the Cirripedia of the Exploring Expedition are 

 described by Dr. A. A. Gould in his Exp. Exp. Report on Mollusca, 

 is incorrect. 



