See following definitions :

***eiusdem***
Two words
It may be two words written together eius + dem
d.em V 1 1 PRES ACTIVE SUB 1 S
do, dare, dedi, datus V TRANS
give; dedicate; sell; pay; grant/bestow/impart/offer/lend; devote; allow; make
surrender/give over; send to die; ascribe/attribute; give birth/produce; utter
dem N 3 7 NOM S M
dem, demos/is N M uncommon
community, a people; administrative district (in Attica); tract of land (L+S);
dem V 3 1 PRES ACTIVE IMP 2 S
demo, demere, dempsi, demptus V TRANS
take/cut away/off, remove, withdraw; subtract; take away from;
e.ius PRON 4 1 GEN S X
is, ea, id PRON
he, she, it, they; also DEMONST that, he, she, it, they, them;
e.ius PRON 4 2 GEN S X
idem, eadem, idem PRON
(w/-dem ONLY, idem, eadem, idem) same, the same, the very same, also;
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http://lysy2.archives.nd.edu/cgi-bin/words.exe?eiusdem

Ejusdem generis

EJUSDEM GENERIS. Of the same kind.
2. In the construction of laws, wills and other instruments, when certain things are enumerated, and then a phrase is used which might be construed to include other things, it is generally confined to things ejusdem generas; as, where an act (9 Ann. C. 20) provided that a writ of quo warranto might issue against persons who should usurp "the offices of mayors, bailiffs, port reeves, and other offices, within the cities, towns, corporate boroughs, and places, within Great Britain," &c.; it was held that "other offices" meant offices ejusdem generis; and that the word "places" signified places of the same kind; that is, that the offices must be corporate offices, and the places must be corporate Places. 5 T. R. 375,379; 5 B. & C. 640; 8 D. & Ry. 393; 1 B. & C. 237.
3. So, in the construction of wills, when certain articles are enumerated, the terra goods is to be restricted to those ejusdem generis. Bac. Ab. Legacies, B; 3 Rand. 191; 3 Atk. 61; Abr. Eq. 201; 2 Atk. 113.

http://legal-dictionary.thefreedictionary.com/Ejusdem generi...

ejusdem generis
(eh-youse-dem generous) v adj. Latin for "of the same kind," used to interpret loosely written statutes. Where a law lists specific classes of persons or things and then refers to them in general, the general statements only apply to the same kind of persons or things specifically listed. Example: if a law refers to automobiles, trucks, tractors, motorcycles and other motor-powered vehicles, "vehicles" would not include airplanes, since the list was of land-based transportation.

http://dictionary.law.com/definition2.asp?selected=607&bold=...

There are far more hits for the J spelling in English texts on the WWW, compared to the I spelling, when collocated with 'article' or 'law', about thrre times as many.