454 THE VOYAGE OF H.M.S. CHALLENGEE. 



In the Subfamily Dexamins, for liis genus Lampra, 1870, a preoccupied name, Boeck now 

 gives " Tritaeta. n. g." It is thus defined : — 



" Pedes maxillares laminis exferioribus angustioribus, valde curvatis et modo in summo dimidio 

 spiuis paucis sed validis armatis ; laminis interioribus latioribus et longioribus qvam apud 

 genus Dexamine, spinis multis curvatis et gracilibus armatis. Epimera minima ; epimera 

 (jvatuor anteriora 5to non altiora, in margine inferiore armata. Pes qvinqve parium 

 ultimorum articulo 4to et 5to perbrevibus ; ungve parvo." The type is Aiijlus gihhosus, Sp. 

 Bate. 



In liis notice of the genus Haploo2:is, Liljeborg, Boeck says, "Hos denne Slsegt fandt jeg 

 f0rst og npiagtig underspgte den eiendommelige Halsring, eller rettere (3sophagusring, 

 som ligger indenfor Lasberne og er saalede den inderste og en constant Del af 

 Tyggeapparatet." 



1876. Catta, J. D. 



Note sur quclques crnstaces erratiques. Annales des Sciences natiirelles. 6" 

 Serie. Zoologie. Tome 3, Janvier 1876. Paris, pp. 1-32. PL 1. 2. 



From some Algre attached to a vessel, which had come from India round the Cape of Good Hope 

 into the harbour of Marseilles, were taken a group of Crustacea. Among others there were 

 specimens of Proholium poli/prirm, A. Costa, and Ampldthoij peniciUatu, A. Costa. Professor 

 Catta gives a full description and figures of Proholium poJijprion, showing that Proholium 

 megaclieJes, Heller, cannot properly be distinguished from it. He applies the rather incon- 

 venient nomenclature of 1st, 2d, 3d, 4th, and 5th siarjoiwpodes respectively to the first and 

 second masillaB, the maxillipedes, and the first and second gnathopods. Both in the descrip- 

 tion and figures, however, it is clear that the premier siagonopode represents the second 

 maxilla, and the deuxirme siagonopode the first maxilla. The "saillie trts-volumineuse, 

 arrondie et surmontee d'un long poll cylindrique " given as part of the " premier siagono- 

 pode " is probably the base and inner plate of the first maxilla. The palp or " piece externe " 

 of the " deuxiJ'nie siagonopode " (first maxilla) should no doubt have been represented as two-, 

 instead of one-jointed. The species should moreover have been assigned to Stetwtlw'e, Dana, 

 as the mandibles are without palp. 

 Under the heading, AmphifJwe peniciUata, Professor Catta investigates the relationship between 

 " Ampliithoe DesmaresHi," Sp.-Bate, and AmpiMthoe p)eniciUata, as described first by Costa 

 and then by Heller. He points out that the figures given by the Italian and Austrian 

 authors do not correspond with their descriptions. Carefully figuring and describing the 

 second gnathopod of his own specimen, he decides that the species " Desmarestii " of Bate 

 must be united Avith penicillaia of Costa. In my opinion the name must be carried back 

 a step further to " Amphithoe Vaillantii," Luca.s, 1849, in which the hand of the second 

 gnathopods " est profond^ment fechancr^ k son bord inferieur, et qui, a la naissance de 

 cette cchancrure, est arme d'une epine forte et trcs-saillante." Costa describes this hand 

 " col dorso prolungato un poco al di la della insersione dell' unghia ; il margine unguicolare 

 assai oblique ed a curva rientrante ; il margine dorsale ornato di lunghi peli, che all' 

 estremitk formano un folto pennello." Sp. Bate gives it in his species, "ovate, the upper 

 margin furnished with four or five fascicuK of hairs ; palm oblique, deeply concave, defined 

 by one or two .short spines." "When it is remembered that in the species of Amphitho?, 

 the second gnathopod varies with age and sex, but little confidence will be felt in the 

 midtitudinous species at present established on subtle distinctions, referring to the shape 

 of the gnathopods, the length of the antenna, the colouring of the animal, or perhaps even 

 the locality in which it was captured. 



