560 THE VOYAGE OF H.M.S, CHALLENGER. 



say whether the second uropods are biramous or uniramous. Ericldhonius bidens, A. Costa, 

 is named Cerapus hideris, V. Crs. (nee Czern.). Of Pi/ctilus macrodadylus, Dana, and 

 Pyctilus pugnax, Dana, referred to Cerapus by Czerniavski, Carus remarks, " Hse species 

 duse maris orientalis (insulse Sulu) a Czerniawski in Ponto Euxino repertae forsan etiani in 

 Mediterraneo occurrunt." Elasmopus rapcuc, A. Costa, is here named Podocerus rapcur, 

 V. Crs. Chubia, .Czern., is placed between Podocerus and Amphitlioe. " Amphitlioe 

 SalensMi," V. Crs., is thus described: — "Caput rotimdatum, sine rostro; antennse I. 

 inferioribus duplo longiores, stipite biarticulato et flagello 16-articulato, antennae II. stipite 

 triarticulato, flagello 5-6-articulato ; dorsum leviter rotundatum, absque spinis ; oculi fere 

 orbiculares ; pedes I. secundis niulto robustiores, ungue magno terminati ; pedes VII. 

 omnium longissimi; pedum caudalium pariatriaanteriora niulto longiora; telson triangulare. 

 Habit. : NapoU (Salensky)." By the biarticulate stipes of the upper antennae it is pre- 

 sumably meant that the third joint of the peduncle is indistinguishable in size from the 

 succeeding joints of the flageUum. The first gnathopods stouter than the second, and the 

 elongate fifth perreopods seem to point in the direction rather of Microdeutopus than of 

 Amphitlioe, but nothing is said of a secondary flagelluni. 



In the family Orchestidse, Dana, Allorchestes, Dana, is given, with Hyale, Eathke, for a synonym, 

 and thus defined, " Antennm I. seque Jongx ac stipes inferioruni, articulis hasalibus imperfecte 

 cum /route connatis; spina olfactoria rudimentaris : mandihulee palpo carentes ; maxilli- 

 pedes uneino terminali acuminato ; pedes I. et II. suhcheliformes." The tenth species 

 assigned to this genus is ? Allorchestes ptincfatus, Sp. E. (Euone punctata, Risso). Risso's 

 definition of his genus is quoted. The name should be Enone, not Euone. This is followed 

 by " Nicea Nicolet [Hyale Ethke., Amphithoe M.-Edw. p., Allorchestes Dana p.). Antennx 

 I. et II. subssquales, viz capite longiores; telson profmide divisum {aut duplex?); pedes 

 paris I. et II. subchelati ; reliqux notx uti in Allorcheste." Thirteen species are assigned 

 to Nicea, ending with "A", pontica Catta {Hyale pontica Ethke.)" 



In the famUy Gammaridas (M.-Edw.), Sp. B., "subfam. Atylinse Cls.," to Pherusa, Leach, is 

 given the synonymy, "Amphithoe M.-Edw., Titanethes Schiodte, Paramphithoe Bruz. p." 

 Titanethes, Schiodte, however, is the name of an Isopod, given in place of Pherusa, Koch, 

 preoccupied. Proholium, A. Costa, is retained, with five species, but as the definition given 

 of it includes " mandibulse sine palpo," this suffices to show that the species in question, 

 polyprion, Costa, marina, Sp. Bate, longimana, Sp. Bate, megacheles. Heller, tergestina, 

 Nebeski, belong to Stenothoij, Dana, if in each case the character of the mandibles has been 

 ascertained. The third of these species is entered as " Pr. longimanum V. Crs. {Montagua 

 longimana Sp. B.)." Amphitonotus, Costa, is given, with Tritropis, Boeck, for a synonym- 

 Among the species is included " A. BobretzMi Catta. Nondum descri^sta. (Corjjus 

 omnino inerme.) Habit.: Marseille, Calangue de Podesta (Catta)." 



In the second subfam. Ampeliscina3, LiUjeb. (Sp. B.), " A. Gaimardi Kr.," has the synonyms, 

 " Tetromatus typicus Sp. B., Araneops diadema Costa, Byblis Gaimardi Boeck." "A. 

 breviconiis Marion," has the synonyms " Araneops brevicornis A. Costa, A. Belliana Sp. 

 B., A. Ixvigata LiUjeb." 



In the third subfam. Leucothoinse, Dana, under Leucothoe, Leach, is given as the second 

 species, " L. Eichiardii Lessona. A L. furina differt pari ultimo pedum spuriorum 

 projiciente uti in L. furina, sed in chelam bidigitalem terminato. Thorax, antenn;e et par 

 pedum chelatum rubra, abdomen maculis rubris. Habit.: Geneva, sinus (Lessona)." It is 

 not said whether the peculiarity has been observed in more than one individual, and the 

 description is the more puzzling, as the words "projiciente uti in L. furina" seem to 

 contradict what is said in the account given of that species, " par ultimum pedum caudalium 

 extremitatem praecedentium non superans." The account given of " Seba A. Costa" and of 

 its species, " S. innominata A. Costa," agrees exactly with that given in the Brit. Mus. 



