232 CANON A. M. NORMAN ON THE PODOSOMATA 



Latreille again, four years later (Gen. Crust, et Insect. 1806, p. 143) 



has : — 



" Fam. Pycnogonides : I. Maudibulpe (biarticulatye j ; pedes decern, antici 

 duo spurii ; inflexi, oviferi. Genus Nymjylion : Mandibulse didactylse. Palpi 

 duo. Genus Phoxichilus : Mandibulse monodactylse, palpi nullse " ; with 

 reference again to Pycnogommi spimjjes, 0. Fabr. 



In both these quotations the characters given are directly the opposite to 

 those of P. spinijyes, which has strongly developed " Mandibulse didactylse." 

 There is one genus which if we substitute the name palpi for mandibulae will 

 answer to the generic descriptions of the original Plioxicliilus, and Sabine was 

 so far quite justified in calling the first discovered Colossendeis, Phoxichilus 

 proboscideus. 



But we must pursue Plioxicliilus further : — 



Leach (Trans. Linn. Soc. vol. xi. 1815, p. 306) describes the genus as 

 having " Mandibulse nullse." Nothing is said of any palpi. The 

 characters here then are not those of Latreille and are still further away 

 from those of P. spinrpes. 



Latreille (Diet. d^Hist. Nat., Nouvelle Edition, 1818, vol. xxvi. p. 14). 

 Here we have a full account of Phoxicliiliis, and Latreille tells us of the 

 blunder he made, and that the mandibles really '' finissoient en pince didactyle, 

 de meme que celles des Nymphons,'' but that Phoxichilus is distinguished from 

 Nymphon by the absence of palpi. He concludes : " Le Nymphon femoratum, 

 Rathke, et le Phalanginm spinosum, Montagu, paraissent appartenir au genre 

 des Phoxichiles." After the accurate description of the genus follows the 

 first unfortunate intimation that Plialangium spinosum may belong to the 

 genus. 



Johnston, in 1837 (31), was, I believe, the first writer who actually used 

 the joint names Phoxichilus spinosus, which have since that date been 

 employed. 



Lamarck (Hist. Nat. Anim. sans Vert. vol. v. 1838, p. 103) only increased 

 the confusion by giving among his characters " mandibulis duabus vel 

 uniuno-ulatis, vel chelatis," including in his genus both the spinipes Fabr. 

 and the spinosus Montagu, the latter of which, however, he re-named 

 Phoxichilus monodactylus. 



Milne-Edvtards (Hist. Nat. des Crust, vol. iii. 1840, p. 535) consummated 

 the confusion, giving to Phoxichilus only one species P. spinosus, removing 

 P. spinipes, Fabr., and giving it as a doubtful synonym under Pallene 

 hrevirostris. 



The change made by Stebbing must, I fear, be of necessity adopted ; but 

 instead of writing as Mr. Stebbing has done that Phoxichilus was established 

 by Latreille " so far back as 1804, not as has been stated in 1816," I should 

 write " Latreille 1804 as corrected hy him in 1818,'''' for the first description 



