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



1862. Costa, Achille. 



Aiinuario del Museo Zoologico della R. Universita di Napoli per Achille Costa. 

 Anno I. Napoli, 1862. 



Articolo 10°. Osservazioni sulla Dipliya quadrivalvis e su' Crostacei die si 

 svihqjpano entro i bottoni delle appendici urticanti. pp. 90-94. 



"While watching some specimens of Dipliya (Galeolaria) quadrivalvis, Costa noticed some move- 

 ments in the urticating apparatus which surprised him. He found them due to a little 

 Crustacean encased in the "bottoni," which stand at the extremity of the secondary fila- 

 ments. " Entro que' bottoni, come entro di un sacco cistico, era un piccolo Crostaceo, 

 nello stato quasi embrionale, co' piedi toracici ripiegati contro il petto ed immobili, e con i 

 falsi piedi addominaU in continuo movimento. L'abito generale dell' animale ci porterebbe 

 a vedervi qualche affinity con le Phrodne ; pert) la struttura de' piedi non presenta nulla 

 de' caratteri proprii de' Crostacei di tal genere ; siccome non ci h permesso vedervi con 

 esattezza alcuno de' generi gia noti nello stato adulto. Laonde, salvo sempre a ben fissarne 

 le note caratteristiche, noi le chiameromo Dipiiyicola ruhens." He proceetls to ask, whence 

 come the eggs of the Crustaceans, in what way do they penetrate into the appendages of the 

 Dipliya, when do they leave this receptacle, etc.? The observation is most interesting, but 

 it seems rash to have constituted a new genus, with practically no characters. Figures 5, 

 6, are given on pi. iii., of the animal in a very embryonic condition in its involucre, and 

 " figura 7, II Crostaceo osservato in altro bottone piii sviluppato, ed avente gia tutte le 

 parti ben determinate. Esso riraanova avvolto da una sempUce membrana, la quale come 

 per un funicello era attaccata al filamento accessorio indicata." 



1862. Bate and Westwood. 



A History of the British Sessile-eyed Crustacea. Part IV., January 1, 1862. 

 Part v., February 1, 1862. Pai-t. VI., April 1, 1862. Part VII., May 1, 1862. 

 Part VIIL, July 1, 1862. Part IX., November 1, 1862. Part X., December 1, 

 1862. pp. 145-480, each Part in this work containing 48 pages. London. 



At page 161 Q^dicerogpiarvimanus, n. s., is figured and described, on which the aixthors remark 

 that " Kroyer in his generic description states that both pairs of hands are very large," 

 whereas in their species " neither of the hands can be described as being large, and the 

 second is decidedly smaller than the first." In vol. ii. p. 528, 1868, the authors mention 

 specimens which they think must be the male form. "They differ from that described in 

 having the upper antennoe but little longer than the peduncle of the lower, the lower 

 antenuffl as long as the entire animal, and the gnathopoda with hands somewhat larger, but 

 scarcely equal to the ' very large ' hands as described by Kroyer in his description of the 

 genus. " 



At page 177 Kroyera altamarina, n. s., is figm-ed and described. By J. Sparre Schneider, 1885, 

 this is made a synonym of Pontocrates norvcgicus, Boeck. See Note on Schneider, 1885. 



At page 206 Liljehorgia slietlandica, n. s., is figured and described. This appears to be a 

 synonym of Cheirocratus simdeoalli, Eathke, lSi3. 



At page 226 is given the new genus Per&ionotus, thus defined : — 



" Ccphalon short. Pereion distended. Pleon compressed. Antennfe very short. Superior 

 longer and more robust. Gnathopoda subchelate, subequal. Pereiopoda short, robust. 



