ON CRUSTACEA BROUGHT BY DR WILLEY FROM THE SOUTH SEAS. 651 



specific name, as the Armadillo, which does not seem a bar! notion for indicating 

 the type of a genus. In any case it should be remembered that in the Stricklandian 

 Rules of 1842 Brisson is expressly mentioned as one whose defined genera had a title to 

 recognition, though the same indulgence was not to be extended to his species, even 

 when their designations ' are accidentally binomial in form.' Latreiile himself admits 

 preoccupation of the name in its French form, for in 1804, loc. cit., p. 63, when 

 establishing the myriapod genus Glomeris, he says that its formation is due to Cuvier, 

 'qui I'avoit nomme armadille' (Journ. d'hist. natur. tome ii. p. 27). 



In the Regne Animal, vol. 4, p. 144, 1829, Latreiile assigns to his Armadillo 

 species belonging to both Brandt's genera Armadillidium and Armadillo, and it is 

 perhaps for this reason that Budde-Lund suggests that Latreille's original Ar-madillo 

 vulgaris may have been a collective species, from which Brandt had a right to extract 

 the later Armadillo officinalis as a type of the genus. But Latreiile defiuing 

 Armadillu in 1829 expressly says that the last segment is triangular, a shape of the 

 telson which excludes Dumeril's species, and entails the alternative of either substituting 

 Armadillo for Armadillidium or relinquishing Armadillo altogether. 



It may be worth explaining, in regard to terminology, that Dollfus distinguishes in 

 the epistome three portions, first, the prosepistome, which is the upper boundary, in 

 this genus not unfrequently advanced in front of the cephalic 'front,' secondly, the 

 mesepistome, a middle region, in or on which lie the basal joints of the second 

 antennae, and thirdly, the metepistome, a lower transverse piece, flanked by lobes at 

 its upper corner, and bearing below it the labrum or upper lip. 



CuBARis ciNCTUTUS (Kinahan). 

 Plate LXIX A. 

 1859. Pyrgoniscus cinctutus, Kinahan, Proc. Dublin Univ., vol. 1, p. 200, pi. 19, 



fig. A—/: 



1885. Armadillo translucidus, Budde-Lund, Isopoda terrestria, p. 290. 



It is not without some hesitation that I identify the form here described with 

 Budde-Lund's species from Noumea, New Caledonia. The Danish author states that the 

 last joint of the peduncle in the second antennae is almost three times as long as 

 the flagellum, that the eyes are large, with rather large, subglobose ocelli, twenty or 

 more in number ; and that the colour is yellow, sprinkled with numerous black or 

 blackish spots and dots, being in particular black with confluent spots in the middle 

 of the fifth, sixth and seventh segments of the peraeon and at the sides of the third, 

 fourth and fifth segments of the pleon. In these respects his specimen is not in 

 agreement with Dr Willey's. But the agreement otherwise is so very close that 

 separation seems unadvisable. Budde-Lund in his Monograph, p. 46, .speaks of knowing 

 Kinahan's Pyrgoniscus by the description, but curiously leaves his readers without any 

 clue to the terms of it, which he had probably himself forgotten when describing 

 Armadillo translucidus in the appendix to his own work. 



Kinahan's specimen from ' the Eastern seas ' was without the second antennae, 

 w. V. 86 



