REPORT ON THE AMPHIPODA. 149 



He observes that many ot the little animals belonging to this family are phosphorescent, as the 

 Phasmatofarcud and perhaps the Ainblyrliynroti, Erijthrocephali, Acantliocephali, &c. 



Under the heading iSijdematiea, Synouymica d Diatjnodica he gives : — 



"1. Classis : Insecta L., etc., Crustacea Cuv.; Polymeria GoliJf. 



"2. Ordn : Aptera Z.; Kgons.ia.Fahr.; Decapoda Gdhlf.; Insecta impeifecta ^«?(A-. 



"3. Familia: Amphipoda Cuv.; Anthocephala Dioneril ; Squillares Gold/.; Ganunarinae 

 (Cervettines) Latreille ; Squillse Zenk." 



For the synonyma he refers to Gronoo. Zooph., no. 990. Sclmenkfeldt ther. Siles. p. 557. 

 Onomast. hist. nat. vL 706. Busier (An Gammarus mariims?). Raj. ins. p. 44. Frkrh, 

 Geoffroy, Klein, Roesel, Degeer, Lmne Syst. nat., eJ. xii. T. v. p. 2992, n. 81. Scopoli, 

 &c. Herhst. Linn. Faun. Suec. 2. 241. Mull. zool. Jan. prodr. n. 2366. Blumenbaeh. 

 Fabric, syst. entom. 1775. Olicn, Guvier le rogne anim.; iibers v. Schinz. in, 68. Xat. 

 f. Sch., p. 725. Diet, des sciences chez Levrault xi., 408, and Leach (Gammarus aquaticus) 

 Edinb. Encycl. vii. 



He quotes the diagno-tis generis Gammari of Fabricius, 1778, Leach (Linu. Transact, xi. 2, 

 1815), Ol-en (Naturg. f. Schulen, p. 725), Cuvier le r^gne anim.; trans, by Schinz), and his 

 own " Antennas quatuor, anticas (inferiores) breviores, posticaj (superiores) longiores cum 

 ramo parvo accessorio, utraeque articulates. Zenlc," in which it will be observed that, 

 like Fabricius, he applies the terms anficx and postica: to the lower and upper antenna 

 respectively (see Note on J. C. Fabricius, 1798). He criticizes with some justice the earlier 

 diagnoses, and gives a brief account of the distinctions between those genera in his Con- 

 spectus which he con.<;iders to come nearest to Gammaria. He then gives the diagnosis of 

 the species " G. Pidcc Fahr." by Linnr, Scopoli, Fabricius, Oken, Cuvier, Leach, winding 

 up with his own, in which he distinguishes two varieties, a) longicaudatus, /3) Irrevicaudatus. 

 In the description he applies the term femur (in preference to coj-tC) to the first joint of the 

 leg. Of the six free joints he calls the first tibia, the second tarsus, the three following 

 metatarsus, the last of these being terminated by an unguis. 



The second section is on the Sanguinis circuitus, as to which his conclusions are not enthely in 

 agreement with modern investigation. He sums up the results of his jjajjer as follows : — 

 1. For the numerical law in all the external parts of Gammarus Pulex, the ternary arrange- 

 ment is found to be the predominant, the quinary the -subordinate. [See p. 13. Totius 

 corporis annuli 3. 5= 15. a) caput cum collo 3. b) pectus 3. c) abdomen superius 3. </) 

 abdomen inferius 3. e) cauda 3. &c. &c.] 2. The creature has three species of parasites, two 

 internal, in the blood, orange-coloured, surprisingly large in proportion to their host, and 

 one external, louse-like, almost microscopic. 3. The dorsal vessel is rather to be compared 

 with the swim-bladder of fishes than with a heart. 4. There are no special blood-vessels, 

 but the blood flows freely round all the organs in the cavity of the trunk. 5. The 

 globules of the blood are not animated (and therefore are not to be compared with 

 monads). The last statement is in opposition to Mayer, Suppl. zur Lehre vom Kreislaufc, 

 1827, some of whose statements he quotes with derision. 



1833. Bouchard-Chanteeeaux. 



Catalogue des Crustaces observes jusqu'a ce jour a I'c'tat vivaut dau.s le 

 Boulonnais. (Soc. d'Agric, du Coram., et des Arts, de Boulogue-sur-mer, aunees 

 1831 et 1832. Boulogne, 1833.) 



" II cite les 5 espfeces suivantes : Talitrus locusta Lmk. Orchestia littorea Desm. Melita palmata 

 Desm. Gammarus pulex Lin. Proton pcdatum Desm." (M. Edouard Chevi'eux in lift.) 



