352 Dr. Lracn’s Arrangement of the Crustacea, ác. 
Legio II. EDRIOPHTHALM A. 
Latreille considered the animals which compose the first and 
part of the second section of this Legion as a family of the Ma- 
CROURA ; but had he been acquainted with the following new and 
curious genera, he would doubtless have formed a very different 
opinion. 
Sectio I. Corpus lateraliter compressum. Pedes 14. Antenne 2 
in frontem insert@, und utrinque. (Cauda stylis instructa.) 
Secrio II. Corpus lateraliter compressum. | Pedes 14 coxis lamelli- 
formilus. Antenne 4per paria insert@. (Cauda stylis instructa.) 
= Drvisto I. Antenne 4-articulate, articulo ultimo e segmentis plurimis 
efformato ; superiores brevissime. ; 
Antenne superiores articulis duobus inferiorum basilaribus breviores. 
Antenne superiores articulis duobus basilaribus inferiorum haud lon- 
giores. 3 
Divisio II. Antenne 4-articulate, articulo ultimo e segmentis plu- 
rimis efformato ; superiores subbreviores. 
Pedes 4 antici monodactyli, manu parvulà compressä. 
Divisio III. Antenne 3-articulate, articulo ultimo e segmentis plu-. 
rimis efformato; superiores longiores. 
Pedes 4 antici subequales monodactyli, manu compressa. 
Pedum par anticum didactylum pollice biarticulato, par secundum 
monodactylum. 
Divisio IV. Antenne 4-articulatze, articulo ultimo e segmentis plurimis 
efformato ; superiores longiores. 
Subdivisio 1. Pedes quatuor antici monodactyli, par secundum manu 
valdé dilatatà, compressa. 
Pedum par secundum digito in palmam inflectendo. 
Pedum par secundum digito in latus anticum inflectendum. 
Suldivisio 2. Pedum paria duo antica monodactyla conformia. 
Antenne superiores ad basin articuli quarti setulà instructae, 
Genera. 
1, PHRONYMA. 
2. TALITRUS. 
3. ORCHESTIA. 
4, ATYLUs. 
5. DEXAMINE. 
6. LEUCOTHOE. 
7. MELITA. 
8. Mara, 
9. GAMMARUS. 
Antenne 
