439 



EDINGTONITE. 



EGERIA. 



490 



T. eptemcinttus, the Peba. 

 T. minuta, the Pichey. 

 Xenurui unicinctui, the Tatouay. 

 Priodonta gigas, the Tatou. 



c. Myrmecophagina. 

 Orycleropus Capemit, the Aard-Vark. 

 Myrmecophaga jubata, the Tamanoir. 

 Tamandun te/radactyla, the Tamandua. 

 Cyclothurva didactylvw, the Ant-Eater. 



d. Omithorhynchina. 

 Platypus anatinue, the Mullingong. 

 Echidna hyitruc, the Echidna. 

 S. tetota, Brown Echidna. 



Family BR.VDTPID.E. 

 Cholfppus didactyluSj Unau. 

 Jjradypua torffuatui, the Gipakeiou. 

 S. yidaris, the Yellow-Faced Sloth. 

 B. tridactylui, the Sloth or Ai. 



EDINQTONITE, a Mineral, consisting of silicate of alumina, &c. 

 It occurs in small right square prisms, with lateral cleavage. It is 

 nearly colourless, and has a vitreous lustre. It has a hardness of 4 to 

 4'5, and a specific gravity from 27 to 2'75. It is found with Thorn- 

 sonite, in Dumbartonshire. 



EDUIOPHTHALMIA (Leach), a legion of Crustaceous Animals 

 with sessile eyes, which are generally compound, but sometimes 

 simple, situated on the sides of the head. The mandibles are often 

 furnished with a palp, and the head is almost always distinct from 

 the body. 



Desmarest makes the Edriophthalmia comprehend the AmpMpoda 

 of Latreille, which, the former observes, Leach has not admitted, 

 and which includes the two first sections of his legion of Malacoi- 

 traca Edriophthalmia, and corresponds to the genus Gammarut of 

 Fabricius. 



The Amphipoda are characterised as having a head distinct from 

 the trunk, and formed of a single piece ; mandibles provided with a 

 palp ; jaws to the number of three pairs, the external pair of which 

 represent a lip with two palps or two small feet united near ita origin ; 

 a body laterally compressed, and divided into seven segments ; four- 

 teen feet, of which the anterior are often terminated by a claw with 

 a single finger ; vesiculous branchia! situated at the internal base of 

 the feet, with the exception of that of the anterior pair ; tail composed 

 of from six to seven articulations, and bearing underneath five pairs 

 of false feet in form of filaments, with two very moveable branches. 

 They are thus divided by Desmarest : 



The first section consists of those species whose antenna; are inserted 

 one on each side of the front ; whose tail is terminated by styliform 

 filaments ; and whose head is large and vertical. Example, Plironima, 

 Latr., Leach, Lam., Ac. &c. ; Cancer, Herbst, Forak. 



The second (not admitted by Leach) comprises those with four 

 antenn.-e ; two flattened leaflets serving for fins, placed at the end of 

 the tail, in place of the styles; and the head large and vertical. 

 Example, //<///'", I.:itr. 



The third includes those which have four antenna; ; the tail termi- 

 nated by styliform filaments ; the head moderately large and not 

 vertical, and contains six divisions, some of which are subdivided. 

 Ta/itrut, Latr.; Alyltu, Leach; Dcraminr, Leach; Melita, Leach; 

 (jammarut, Fabr. ; Podoctriu, Leach ; Corophium, Latr. ; Cerapui, 

 Say, may be taken as examples of some of the forma of these 

 divisions and subdivisions. 



The other orders arranged by Desmarest under the Edriophthalmia 

 are the Lccmodipuda, Latr., and the Itopoda, Latr. 



M. Milne-Edwards makes the Edriophthalmians consist of the same 

 orders, placing them as a legion of the sub-class of Maxillated Crusta- 

 ceans, next to the legion of Podophthalmiaus. [CRUSTACEA.] 



KUNVAltDSIA. [AcTiNiAD*.] 



KJ>\VAKI)SITE, a name for Monazite. [CURIUM.] 



EEL. [Ml-R.F.NID.] 



KKL, SAND. [AMMODYTKS.] 



EFT. The terms Eft and Newt are applied almost indiscriminately 

 to all the species of Lizards which are found in the British Islands. 

 The word lizard is evidently formed from lacerta, and is comparatively 

 modern. Eft and Newt are the old Saxon words. Eft seems to be 

 more usually applied to the land animals, one of the most common 

 of which is the Zootoca riripara, and another less common, the Lacerta 

 dyilit. Newt is more commonly applied to the animals which inhabit 

 ponds, wet ditches, and other damp places, such as the Triton cr.itatiu 

 (the Great Water-Newt), Liuotriton punctatua (the Common Smooth 

 Newt), and other species. [AMPHIBIA; SAURIA.] 



EG EON, Risso's name for a genus of Macrourous Decapodous 

 Crtutacca, whose characters are generally like those of the Shrimp 

 [CRANootUDiB], but with the following differences. The fourth or hint 

 visible joint of the external jaw-feet is nearly twice as large as the 

 preceding. The feet of the fecond pair are extremely short, slender, 

 and didactylous ; those of the third long, very slender, and terminated 

 by a single nail ; those of the fourth and fifth pairs larger, and ending 

 by a compressed nail. The carapace elongated, cylindrical, spiuous, 

 nn'l ti ntfriorly by a email rostrum. 



The extreme brevity, observes Desmareet, of the second pair of feet, 

 and the roughness of the carapace, are the moat remarkable of these 

 differences ; but they do not in hia opinion present characters suffi- 

 cient for the establishment of a genus. 



. loricatui, Risso ; Pont&philus ipinotut, Leach (see ' Trans. Soc. 

 Linn." t. xi., p. 346 ; and ' Malac. Brit.' tab. 37 A) has a carapace sup- 

 porting three longitudinal dentelated carina; above ; rostrum very 

 short ; total length about an inch and a half. Pontophilus spinosus 

 inhabits the coasts of England, those of Nice and the Adriatic Sea. 



Egean loricatia. a, left foot of the first j'air magnified. 



In his ' British Crustacea,' Professor Bell has the following remarks 

 on the synonymy of this species : " A careful examination," he says, 

 " of several British specimens of this species (Pontophilui spinoms), 

 and of a well-marked one of the Mediterranean form, with which I 

 believe it Jjas been erroneously confounded, has led me to reject the 

 alleged synonyms of Risso and Roux, which appear to me to belong 

 to a very distinct species. I am not aware of the grounds upon which 

 Dr. Milne- Edwards has considered the Egeon loricatus of Risso as the 

 male of the Pontophilus gpinonus of Leach ; but I feel very confident 

 that they belong to different species." 



EGERAN. [IDOCRASE.] 



EGE'RIA, a genus of Brachyurous Decapod Crustaceans established 

 by Leach, and thus characterised : 



External antenna; short, inserted on the sides of the rostrum, having 

 their second joint much shorter than the first. External jaw-feet 

 having their third articulation straight on the internal border, and 

 terminated by a point. Claws delicate, linear, double the length of 

 the body in the males, nearly equalling it in the females, much shorter 

 in both sexes than the rest of the feet, which are very slender, those 

 of the fifth pair being five times the length of the body. Carapace 

 triangular, tuberculated, and spinous, terminated by a rather short 

 rostrum, which is bifid, with diverging points. Eyes much larger than 

 their peduncle. Orbits having a double fissure on their superior 

 border. 



fyt'i in Ilttttcft. 



Desmnrest observes that this genus, somewhat hastily established 

 by Leach, if the number of articulations of the abdomen in the species 

 which compose it were teven, would be nearly approximated to A/am, 

 Pisa, Mithrax, and Midppa, in the form of the body ; but the 



