272 
ORIGINAL ARTICLES. 
To show the place of Estlieria in the Crustacean group, Mr. J. 
D. Dana’s classification* is here produced. 
CL A SS. —CRUSTACEA. 
Subclass I. Decapoda. II. Tetradecapoda. III. Entomostraca. 
Subclass — Entomostraca. 
Ordo I. Gnathostomata. 
Legion I. Lophyropoda. 
Tribus I. Cyclopoidea. 
Fam. I. Calamidse. II. Cyclopoidaj. III. Corycoeidse. 
Tribus II. Daphnioidea. 
Fam. I. Penilidas. II. Daphnidse. III. Polyphemktee. 
Tribus III. Cyproidea. 
Fam. I. Cypridse 
Sub/am. I. Cyprinae ( Cypris, Candona). 
II. Cythermae (Cythere). 
Fam. II. Halocypridae. 
Sub/am. I. Cypridininse. II. Ilalocyprinse. 
Legion II. Phyllopoda. 
Tribus I. Artemioidea. 
Fam. I. Artemiadae. II. Nebaliadee. 
Tribus II. Apodoidea. 
Fam. Apodidae (Apus). 
Tribus III. Limnadioidea. 
Fam. Limnadidae.f 
Genus 1 . Limnadia,^Ld. Brongniart. 
2. Cyzicus, Audouin. \_Estheria, Riippell.] 
3. Limnetis, Loven (Hedessa , Lievin). 
Ordo II. Cormostomata. 
Subordo I. Poecilopoda. II. Pycnogonoidea (vel Arachnopoda). 
Limnadia has the following diagnosis:—“ Caput yix rostriforme, 
dorso tuberculum pyriforme gerens Pedes toti foliacei. Abdomen 
extremitate appendicibus acuminatis quatuor armatum.” 
Cyzicus.% [Estlieria, Riippell and Straus-Durckheim.] “ Caput 
* “Report on Crustacea of the United States’ Exploring Expedition,” 1853, 
pp. 1277, &c. 
f Apusiens (in part) of Milne-Edwards, Hist. Nat. Crust., iii. p. 513. The 
Leperditidce (including Leperditia, Beyrichia , Kirlibya, Sfc.) form, I believe, a 
closely related (extinct) Family. 
| Audouin, Ann. de la Soc. Entom., vol. vi. Bullet., Feb. 1837, p. ix ; Fstlie- 
ria , Riippell and Straus-Durckheim, Mus. Senckenberg, ii. 119, 1837; Isaura , 
Joly, Ann. Sc. Nat., 2 ser. xvii. p. 293, 1842. 
Dr. Baird has the following observations on the generic name of this animal: 
“ This genus was indicated by Audouin and Straus-Durckheim in the same year; 
the former proposing, for the species brought by M. Bravais from Oran, the name of 
Cyzicus ; and the latter, for that brought by Dr. Riippell from Abyssinia, the generic 
name Estlieria. From the simultaneous publication of these two generic names, it 
is difficult to decide which should stand; and M. Joly, apparently feeling the diffi¬ 
culty, has proposed a third name, taking as the type the species found by him at 
Toulouse, and calling it Isaura. As M. Audouin merely indicates the genus, with¬ 
out giving a description of either genus or species, whilst M. Straus details at full 
length both generic and specific characters, and figures the typical species, I pro¬ 
pose adopting his name, and retaining the generic name Estlieria , a name originally 
proposed by Dr. Riippell himself.” 
I coincide with Dr. Baird’s opinion as to the propriety of using the term Esthe- 
