REPORT ON THE AMPHIPODA. 71 



" Arenarius. Slightly depressed before, carinate and subserrate beliind : 4 fore-legs cheliform 

 and smooth : antennae nearly equal. Stroem. Act. Hafn. 10. tab. 2. firj. 1-8. 

 Inhabits the Sandy Shores of Greenland, on the Ulva umbilicalis. 

 " Stroemianus. Compressed ; 4 fore-legs cheliform and slightly toothed : upper antennas very 

 short. 

 Stroem. Act. Hafn. 9. p. 558. tab. 8. 

 Inhabits the Shores of Greenland. Body violet. 

 " Abysdnus. Subcylindrical ; 4 fore-legs cheliform and 1-toothed : antennse subequal setiferous 

 and serrate at the base on the inner margin. 

 Inhabits Ch-eenland. Fab. fn. Groen. ^i. 261. n. 236. 



Body with white and saifron bands : darts with great velocity in the water. 

 " These 6 last might probably be referred to the genus Cancer." 



In this list, Cancer (Ganwiarus) carino-spinosus, being without references, is apparently intended 

 for a new species. In the Brit. iMus. Catalogue, Speuce Bate names it Amathia earino- 

 spinosa, distinguishing it from Amatliia sabinii " more in deference to the opinions of 

 Rathke, LUjeborg, and Bruzelius, than from a conviction of there being any real distinction 

 between them." Boeck accordingly makes " Cancer carino-s2nnosa, Turton, Linn. Syst. Nat. 

 III. p. 760. (if0lge Spence Bate) " a synonym of Ainaihilla sabini, without observing 

 that Bate and Westwood, vol. i. p. 362, declare that Turton's species is Atylus carinatvs. 

 On page 363, they say further, " it is quite evident that the latter [Turton] never examined 

 the animal of unknown habitat in the British Museum, which he cites, but that his know- 

 ledge was derived from the Fabrician description of Atylus carinatus, the name of which he 

 unnecessarily altered." The species. Cancer {Gammariis) cornigei; though also without 

 references, is clearly the Gammarus corniffer of Pabricius, now called Epimeria cornigera. 

 It wiU be observed that for Cancer [Gammarus) medusarum and for Oniscus (Cymothoa) 

 medusarum, Turton gives the same reference to Str0m without any attempt at ex- 

 planation. 



1802. Lateeille, p. a. 



Histoire Naturelle, generale et particuliere des Crustaces et des Insectcs. 

 Ouvrage faisant suite aux CEuvres de Leclerc de BufFon, et jDartie du Cours 

 complet d'Histoire naturelle redige par C. S. Sonuini. Tomes I.-IV. A Paris. 

 An X. 



In vol. i. p. 45, he recognises that the Stalk-eyed Crustacea or pediocles of Lamarck have an 

 organization evidently distinct from insects, but the Sessile-eyed Crustacea come so near 

 the insects, by the form of the vessel regarded as the heart, that he would have been well 

 content for the present to leave the Crustacea at the head of the insects, only forming a 

 subclass of them. 



Vol. ii. opens with a table giving "Divisions g^n^rales des animaux invert^br^s et pourvus do 

 pattes." The Crustaces, Class I. have "Mandibules palpigkes. Des pieces articulees 

 doubles ou bifides, dit-posees sur pluaieurs rangs, et fermant la bouche. Quatre antennes." 

 These form two orders, Les Decapodes, "Tete confondue avec le corselet. Branchies 

 cach^es," and Les Branchiogastres, "Tete distincte. Branchies exterieures." The Insectes, 

 Class II., include four subclasses, the first of which is named les Tetrac6res, and the fourth 

 les Entomostraces. 



An explanation of earlier classifications is given pp. 292-365. After Aristotle he considers 

 that Aldrovandus was the first systematist to make any advance, then Willulghby 



