TEREESTKIAL ISOPOUA OF XEW ZEAL.AJVU. 147 



mesosome. The specimens from Nelson, Welliug-toii, &c., jji^eviously identified with this 

 species hy Mr. Thomson and myself *, do not bclont^' to this species, but to Armadillo 

 (imhitiosus, Bndde-Lnnd. 



4. AiiAiADiLLO iiUGULOSTFS, Miers, 1870. (PI. 16. iig. 7.) 



Cubaris rugulosus, Miers, Ann. & Mag. Nat. Hist. ser. 1, xvii. p. '.l'l~i (1876) ; Cat. N. Z. Crust, p. 9(5, 



pi. ii. fi-. f) (187G). 

 Cubans ruijulusiis, Chilton, Trans. N. Z. Inst. xv. p. 73 (18.S2). 

 Annadillo riii/ii/nsns, Buddc-Lund, Isopoda Terrestria, p. 40 (188.J). 

 Cubaris rugulosus, Filhol, Mission de File Campbell, p. ilO (1885). 

 Cubaris rugulosus, Thomson & Chilton, Trans. N. Z. Inst, xviii. p. 158 (1888). 



Specific description. — Body moderately convex, surface of segments uneven, faintly 

 rugose. Head hroad and transverse, front margin revolute, first segment of mesosome 

 with two shallow depressions diverging anteriorly on the anterior part of the uj)])er 

 surface ; posterior margin sinuous, angles produced backwards; lower posterior max'gin 

 with a notch for reception of succeeding segment, the notch not extending along the 

 inferior margin ; second segment similarly notched. Dorsal surface of segments of 

 mesosome often with a slight groove parallel to posterior margin ; the second, third, and 

 fourth narrowed at sides with inferior margins rounded ; fifth, sixth, and seventli broader, 

 with inferior margins truncate. Metasome with terminal segment broadest at base, sides 

 at first suddenly converging, then parallel or slightly divergent, extremity square 

 truncate. Antennae finely hirsute, flagelluin shorter than fifth joint of peduncle, second 

 joint three times as long as the first. Uropoda with outer branch small, not quite 

 reaching to the end of last segment; inner branch short, reaching halfway from its base 

 to end of last segment. 



Colour light brown, Avith variegated markings of a rich reddish brown, some speci- 

 mens very dark. 



Length about 6 mm. 



Huhitut. — Very abundant in Sotith Island. 



Bemarks. — This species is much smaller than either of the two preceding, and may 

 generally be readily distinguished from them by the difi'ereut character of the notches 

 in the; posterior lateral margins of the first and second segments of mesosome. I have, 

 however, some specimens from Kenepuru in which these notches are less marked, and 

 the inner branch of the uropoda is a little longer tlian usual, and the colour is rather 

 greyish. The specimens are not very well preserved, and I prefer for the meantime to 

 consider them merely as a variety of the species imder consideration. 



The oblique depressions on the first segment of the metasome described by Miers are 

 generally present, but are more distinct in some specimens than in others ; they are also 

 ]n-esent in some specimens of Armadillo anibitiosus, Budde-Lund, and are probably more 

 or less the necessary consequence of the head fitting in to the first segment when the 

 animal is rolled up, and are therefore probably of little classificatory value. In some 

 specimens the irregularities on the dorsal surface are more distinct than in others, and 



* Trans. X. Z. Inst, xviii. p. 15y. 

 SECOND SERIES. — ZOOLOGY, VOL. VIII. ^2 



