REPORT ON THE AMPHIPODA. 473 



1878. Bate, C. Spence. 



Two new Crustacea from the coast of Aberdeen. Annals and Magazine of 

 Natural History for May, 1878. p. 411. Fig. 2. 



The new sjaecies Lestriijonas spinidursalis, closely resembling Lcdrigonus exiilans, differs from 

 any species of the genus known to Mr. Spence Bate in having the last two somites of the 

 pereion and the first three of the pleoa produced in the median line of the dorsal surface 

 posteriorly to a sharp-pointed tooth or spine. [Surely this is Parathemists compressa (Goes) 

 1865.] 



1878. Bate, C. Spence. 



On the Willemoesia Group of Crustacea. Annals and Magazine of Natural 

 History for December, 1878. pp. 484-489. 



The name Lestrigonus spinldorsalis is here altered to Huperia (Lestrigcmus) spinidorsalis, since 

 Hyperia is the older name, and Lestrigonus is probably founded not on specitto but sexual 

 differences, containing the male forms, as suggested in the British Museum Catalogue, 1862. 



1878. Bate, C. Spence. 



The Crustacea in Couch's Cornish Fauna revised and added to by C. Spence 

 Bate, F.R.S. 1878. Reprintedjrom Part II, No. XIX. Journal Royal Institution 

 of Cornivall. 



The Amphipoda, pages 43 to 62, are not a revision of Couch's work but an addition, taken from 

 Mr. Spence Bate's own writings. On page 47 the genus Grayia is given as Graya. There is 

 reason to believe that this only represents the young of Amatliilla homari. Acantlwnotus 

 oioenii is here said to have been taken from Maia squinado, but the remark properly applies 

 to Isxa montagui, Mihie-Edwards, as may be seen in the Brit. Sess. Crust., i. p. 216. 

 Siljeborgia is printed by mistake for Liljehorgia. 



1878. Bate, C. Spence. 



Report on the present state of our knowledge of the Crustacea. Part HI. On 

 the homologies of the dermal skeleton {continued). [From the Report of the 

 British Association for the Advancement of Science for 1877.] London, 1878. 

 pp. 36-55. 



In discussing the first pair of antennae, Mr. Spence Bate remarks that " in Amphipoda there is 

 never more than one secondary appendage, and that is always of a rudimentary character, 

 and frequently only determinable in the very young stage of the animal and obsolete ia 

 the adult." Dybowsky, however, among the Gammari of the Baikalsee found the secondary 

 appendage sometimes consisting of forty articulations, and therefore scarcely to be called 

 rudimentary. " As we descend," Spence Bate observes, " in the scale of Crustacean forms 

 the antennae naturally become simplified ; but as they lose their internal structural 

 character they increase their external functional arrangement. Thus in Amphipoda the 

 auditory chamber and otolithes are wanting, but in all the aquatic normal forms the 



(ZOOL. OHALL. EXP. — PART LXVH. — 1887.) Xxx CO 



