104 • ' Dlt. W. E. COLLINGE ON THE 
forming a notch on the posterior margin. Telson triangular, width greater 
than the length, not extending bej'ond the uropoda. Uropoda shoi't, extend- 
ing slightly beyond the telson ; basipodite robust, thickened, antero-dorsal 
surface expanded, articulating ventro-anteriorly ; exopodite flattened, ex- 
panded, laminate ; endopodite styliform, elongated. 
This genus is undoubtedly most nearly related to the genus Armadillidium, 
Brandt, as is readily seen in the form of the bod}'' generallj^ in the structure 
of the cephalou and its appendages, and in the form of the uropoda and 
telson. Tt differs, however, from Armadillidium in the following characters :- — 
The cephalic lobes are more feebly developed and the epistome is keeled in 
the middle line, and has a sloping dorsal portion, and auricu]a-sha[)ed pro- 
minences above and lateral to the antennal sockets; the ej'es are small and 
simple ; the pleural plate of the first mesomatic segment exhibits a notch on 
the posterior angle formed by the protrusion of the' coxopodite ; finally the 
uropoda extend beyond the telson. 
In the sloping dorsal portion of the epistome and in the form of the first 
mesosomatic segment, there is a resemblance to the condition found in certain 
South African Cubaridse. 
Eluma CJiLATUBi {Miers). (PI. 8. figs. 1-12.) 
Armadillidium ccelcctum, Miers, Proit. Zool. Soc. Lond. 1877, p. 66.5, pi. 67. figs. 3-3S. 
UlumapwimrascenSiJiadide-Lund, Prosp. gen. spec. Crust. Isop. Terr. 1879, p. 6; 
Crust. Isop. Terr. 1885, p. 48. 
„ ,, Dollfus, Ann. Soc. Espan. Hist. Nat. 1892, xxi. p. 164; 3 Con- 
gres Inter. Zool., Leydeu, 189-5, p. 357 ; Mt5rn. Soc. Zool. 
France, 1906, ix. p. 528. 
„ „ Nnrman, A.nn. & Mog. Nat. Ilist. 1899 (s. 7), iii. p. 69. 
„ „ Verlioeft; Arch. f. Bioutologie, 1908, ii. p. 371, t. 31. 
flgs. 68, 69. 
„ Pack-Beresford, Irish Nat. 1908, p. 265, pi. 10. 
,, ,, Pack-13eresford & Foster, Proc. Roy. Irish Acad. 1911, xxix. 
(s. B), p. 185, pi. 8. figs. 4 a-b. 
Elama ccelatum, Collinge, Check-List Brit. Terr. Isop. 1917, p. 116. 
Body oblong-oval, strongly convex, smooth and somewhat shinj"", minntely 
punctured, clothed with short, thick seta;. C'ephalon (figs. 1 & 2) strongly 
marginate anteriorly, median lobe extending bej'ond the lateral lobes, which 
are small ; epistome with sloping dorsal jjortion and keeled in the median 
line, with auricula-shaped prominences above and lateral to the antennal 
sockets. Eyes simple, very sniiill. Antennulaj (fig. 3) small, 3-jointed, with 
three or four short setse on the sid5 of the third joint. Antennae (fig. 4) 
somewhat short, 1st joint small, 2-4 almost subequal, 5th elongated ; flagellum 
biarticulate, proximal joint less than half the length of the distal one, with 
fine terminal style. First iiiaxillfE (fig. 5) with the outer lobe terminating in 
ten spines, the fii'st throe of which are strong and curved, the 4th, 5th, and 
