1618 THE VOYAGE OF H.M.S. CHALLENGER. 



1793. Fabricius, J. C. 



Entomologia Systematica. (See p. 59.) 



In the account of this work it should have been mentioned that the Amphipods include, besides 

 " Astacus Homari," Astacus crassicornis, Fabricius, a species which has been already 

 discussed, pp. 1271, 1617. 



The new genus Cymothoa is thus defined, p. 503 : — 



" Os absque palpis et mandibulis. Antenna ssepius quatuor asquales, sessiles. 



" Cymothose corpus oblongum, glabrum, immarginatum, tardum, segmentis quatuordecim 

 transversis, brevibus : posticis minoribus, antico sive capite minore, oculis ovatis, lateralibus, 

 antennis brevibus, sub capite insertis, cauda foliolis quatuor, pedibus quatuordecim, brevibus, 

 unguiculatis, colore obscuro." 



The Amphipods which Fabricius includes in this genus are 12. Cymothoa bicaudata, 17. 

 Cymothoa spinosa, and 21. Cymothoa Ceti. Cymothoa bicaudata has the synonym 

 " Oniscus bicaudatus. Mant. Ins. 1.241.11. Linn. Syst. nat. 2.1000.8. Fn. Sv. 2062.," 

 a species which Pallas in 1766 identifies with his own Oniscus volutator, while Fabricius 

 here as elsewhere makes Pallas' species a synonym of his own Gammarus longicornis. 

 Cymothoa spinosa is a new name for the Oniscus spinosus, of which the description has 

 been quoted at page 40. Cymothoa as originally constituted must have been tolerably 

 comprehensive, since the three species of Amphipoda placed in it have since been referred 

 respectively to genera so remote as Corophium, Cystisoma, and Cyamus. In the Supple- 

 mentum, 1798, Fabricius assigns four species instead of twenty-four to Cymothoa, adding, 

 "Cymothoas reliquas mihi minus notas ad ulteriorem disquisitionem sepono;" of the 

 remaining twenty he assigns ten to Idotea (Idothea, Index, p. 27, 1799), one to Ligia, and 

 one (Cymothoa ceti) to Pycnogonum, leaving eight to be accounted for. 



1802. Bosc, L. A. G. 



Histoire Naturelle des Crustaces. (See p. 67.) 



In the Introduction, at page 79, Pose names a new genus, which he places between Gammarus 



and Cyamus, and defines as follows : — 

 " Genre XXXIV. Liparis, Liparis. Corps filiforme, long ; pattes along^es. (Ovaires places 



sous le troisieme et quatrieme anneau.) 

 " Exemp. du genre. Squilla lobata, Fab." 

 He takes no further notice of this genus in his subsequent descriptions. The reference to Squilla 



lobata of O. F. Miiller and O. Fabricius shows that Liparis is a synonym of Caprella, 



Lamarck, 1801. 



1824. Parry, William Edward. 



Journal of a second voyage for the discovery of a north-west passage from the 

 Atlantic to the Pacific; performed in the years 1821-22-23, in his Majesty's 

 ships Fury and Hecla, under the orders of Captain William Edward Parry, 

 R.N., F.R.S., and Commander of the expedition. London, mdcccxxiv. 



In the Bay of Shoals, lat. 66° 31' 59" N., long. 83° 48' 54" W., he notices that "there were con- 

 siderable flocks of the long-tailed duck feeding on the innumerable shrimps (cancer nugax, of 

 Phipps's Voy.) with which the sea swarmed in all this neighbourhood," p. 113. 



At page 126 he says, "I have before mentioned the myriads of small shrimps (cancer nugax), 

 which for some weeks past had been observed near the surface of the sea. These insects 

 were found to be still as numerous as ever [October] in any hole we made in the ice ; 



