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



Under Crevettb, Gammarus, Fabricius, Bosc gives the species ampulla, Phipps ; nugax, Phipps ; 

 carinatus, author not named; cancellus, Pallas; longicornis, with references to Gronw., 

 Pallas, Pennant, Herbst ; pulex, Crevette des ruisseaux, defined as having " Quatre pinces 

 sans doigts ; dix pattes," with references to " Easier. Subs. 2. tab. 3. fig. 7. Geoff. Ins. 2. 

 tab. 21. fig. 6. Degeer. Ins. 7. tab. 33. fig. 1, 2. Herbst. Cane. tab. 36. fig. 4, 5.," and 

 to his own fig. 4 on pi. xiv., which is in fact a representation of Eosel's species ; the account 

 concluding with the remark " se trouve en Eurojje dans les eaux douces, elle est fort 

 commmie aux environs de Paris " ; comiger, no autlior named ; gibhosus, no author named ; 

 esca, no author named; medusarum, with reference only to Stroem, Sundm. tab. 1, figs. 12, 

 13, where the word " Sundm." is spelt as it is in Herbst's account of mediisarum ; and lastly 

 homari, also with reference only to " Stroem, Act. Afr. 10. tab. 2."' 

 Under Talitbe, Talitrus, LatreiUe, Bosc gives locusta, with references to " Pallas, Spioil. Zool. 

 9. tab. 4. fig. 7. Boesel. Ins. 3. tab. 62. Frisch. Ins. 7. tab. 18. Herbst. Cane. tab. 36. 

 fig. 1 ; " and grillus, his own species, figured pi. xv. fig. 2. 

 Under Chevrolle, Caprella, Lamarck, he gives Caprella linearis, " Quatre mains k un seid ongle ; 

 dix pieds dans le male," with references to " Cancer linearis. Linn. — Gammariis linearis. 

 Fab. Pallas, Spicil. Zool. 9. tab. 4. fig. 15. Pennant. Zool. Brit. 3. tab. 12. fig. 32. 

 Martin. Spitz, tab. P. fig. 1. Herbst. Canc. tab. 36. fig. 9 et 10, A. B.," his own figure, 

 PL 15. fig. 5, being presumably borrowed from Herbst, who copies from the Zool. Dan. 

 tab. 56. fig. 5; he also gives Caprella ventricosa. " Deux mains avec un seul ongle; quatorze 

 pieds," with references to "Midler, Zool. Dan. tab. 56. fig. 1, 3. Acta Helv. 4. tab. 4. 

 fig. 8, 9, 10." In his general remarks on "les chevroUes " he says, "La premiere espece, 

 qui a ^te observ^e par Muller, presente un phenomfene remarquable; le male est fort different, 

 et a un plus grand nombre de pattes que la femelle." Bosc thinks that Muller must here 

 have confoimded two species. The confusion, however, must be laid to the charge of Bosc 

 himself. 

 After chapters on Asellus, Idotea, Sphxroma, Ligia, Caligus, Binoadus, Bosc comes to Ctame, 

 Pygnogonum, Fabricius, for which he borrows from Lamarck without acknowledgment the 

 following definition: — "Quatre antennes inegales ; les deux anterieures plus longues, 

 setac^es. Un su^oir simple, retractile, sortant d'une fente courte, situee sous la tete. 

 Deux antennules inserees k la base de la bouohe. Deux yeux. Corps ovale, deprime, k six 

 segmens pediferes. Six paires de pattes ; chaque patte terminee par un crochet." Liitken 

 criticises the inapplicable expression su^oir, and is of opinion that by the two antennules at 

 the base of the mouth, the first gnathopods, not the maxUliiJeds, must be understood here ; 

 he notices also the attribution of a crochet to each foot of six pairs. In the specific account 

 Bosc clearly distinguishes the shape of what he supposed to be the third and fourth pairs 

 of feet from that of the other five pairs. He speaks of the species as le pou de baleine, and 

 figures it, pL xvi. fig. 2, as le Cyame des Ctitaces, representing, according to Liitken, a 

 female (!) of Cijamus inysticeti. Bosc himself gives no Latin name either for this species, 

 or for the Pycnogonum that has been confused with it. To the Pycnogonum he refers as 

 " le cyame des baleines," and after finishing his account of " le cyame des cetaces," he 

 says, " La seconde espece avoit ete plac^e par Linnaeus parmi les phalangium ; par Pallas 

 parmi les a^arus ; par Fabricius, d'abord parmi les poux, et en dernier heu, avec la premifere, 

 parmi les pygnogonum, sous le nom specifique de balenarum. Brunick la regarde conmie 

 formant un genre nouveau, et probablement U a raison ; car cet animal paroit bien differer 

 par la description du pou de baleine." 



