C A R I D E A. 



533 



G-. 2. Sabinea, Owen.*— Rostrum brevissimum. Oculi liberi. Pedes 2di chelis 

 carentes ; 4ti 5tique acuminati, gressorii. 



G. 3. Argis, Krdyer.-\— Rostrum nullum. Oculi sub carapace fere occulti. Pedes 

 2di chelis armati. 



G-. 4. Paracrangon, Dana.— Rostrum elongatum. Oculi liberi. Pedes 2di ob- 

 solete, 4ti 5tique acuminati, gressorii. 



Subfam. 2. LYSMATIN^E.— Pedes lmi 2dis crassiores. Maxilli- 

 pedes externi pediformes. Digiti subsequi uno ad alterum claudente. 

 Pedes 2di annulati. 



G. 1. Nika, Risso.— Rostrum breve. Antennae interna duobus flagellis confectse. 



Pedes antici inipares, uno chelato, altera monodactylo. Carpus paris 2di elon- 



gatus, annulatus. 

 G-. 2. Lysmata, Risso. — Rostrum elongatum, subensiforme. Antenna interna? 



tribus flagellis confeetae. Pedes antici ambo chelati. Carpus paris 2di elongate 



filiformis. 

 G-. 3. Cyclorhynchus, Be Hawn.%— -Rostrum sat breve, compressum et suborbicu- 



lare. Carpus 2dus brevis, pauci-annulatus. 



Subfam. 3. GNATHOPHYLLIN^E. — Pedes 2di Imis crassiores. 

 Maxillipedes externi lati, operculiformes. 



G. 1. G-nathophyllum, Latreille. 



Fam. II. ATYHX2E. 

 Subfam. 1. ATYINiE. — Pedes tboracici palpo non instruct! 



G. 1. Atya, Leac7i.§— Rostrum breve, depressum. Antennas interna flagellis 

 duobus confectas. Pedes 4 antici sat breves, carpis sublunatis, cuspide inferiore 

 manum ferente, digitis penecillo setarum longo ad apicem armatis; 3tii 5tis 

 multo longiores et crassiores. 



G. 2. Atyoida, Randall. \\— Rostra, an tennis pedibusque anticis Atyce affinis. Pedis 

 3tii tenues, 5tis breviores. [An distinctio valida?] 



G. 3. Caridina, Edwards. — Rostrum sat breve sat longum. Antennas internee 

 flagellis duobus confectas. Pedes 2di lmis longiores, digitis pariuin amborum 



* Owen, Append. Voy. Capt. Ross, p. 82.— Crangon septemcarinatum, Sabine 



f Tidskrift, iv. 1843, p. 217. 



X Faun. Japon. Crust., p. 174. 



§ In a paper on new species of Atya, by G-. Newport, in the Ann. Mag. Nat. Hist,, 

 xix. (1847), 158, a species is attributed to Apia, Upolu, in New Zealand. Apia is on 

 the Island of Upolu, which is one of the Navigator or Samoan Group, in the Pacific. 



|| Journ. Acad. Nat. Sci. Philad., viii. p. 140. 



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