. Contributions to a monograph of the Amphipoda Hyperiidea. Hyperiidea. Hyperia Dana-. Facsimile from Dana. U. S. Exp]. Exp. Crust. II, pi. 67, tig. 10. Fig. 1. The animal from the side. 2. The second pair of perseopoda. 3. The urns. Diagn. Caput perruagnum, infra rotundatum, segmentis tribus primis peraei paullo longius. Segmenta tria prima percri coalita, cetera libera. Carpus pedum percei primi paris dilatatus ac pro- ductus, margo anterior processus carpalis dimidio marginis posterioris metacarpi brevior. Carpus pedum secundi paris productus, margo anterior pi'ocessus carpalis dimidio marg
. Contributions to a monograph of the Amphipoda Hyperiidea. Hyperiidea. Hyperia Dana-. Facsimile from Dana. U. S. Exp]. Exp. Crust. II, pi. 67, tig. 10. Fig. 1. The animal from the side. 2. The second pair of perseopoda. 3. The urns. Diagn. Caput perruagnum, infra rotundatum, segmentis tribus primis peraei paullo longius. Segmenta tria prima percri coalita, cetera libera. Carpus pedum percei primi paris dilatatus ac pro- ductus, margo anterior processus carpalis dimidio marginis posterioris metacarpi brevior. Carpus pedum secundi paris productus, margo anterior pi'ocessus carpalis dimidio marginis posterioris metacarpi paullo longior. Metacarpus pedum primi et secundi pariuin spin am singulam margini anteriori affixam gerens; dactylus mediocris. Pedes tertii ac quarti pa- rium pedibus parium duorum prajcedentium paullo longiores; carpus non tumidus, spinis destitutes; metacarpus carpo vix angustior. Pedes parium trium ultimorum duobus prjece- dentibus longiores; pedes septimi paris pedibus quinti ac sexti parium longiores; femur pedum septimi paris latum; carpus tibia non brevior; dactylus longus. Latera segmentorum [Aei post rotundata. Segmentum secundum uri liberum(?). Pedunculus pedum uri ultimi paris plus quam duplo longior quam latior, ac ramo interno ter longior. Telson latins quam longius, segmento tertio uri paullo brevius, ]>edunculo pedum uri ultimi paris latins, ac di- midio pedunculi ejusdem brevius. The head is very large, rounded below, and a little longer than the first three pergonal seg- ments. The first three segments of the pjerwon are coalesced, the following are free. The carpus of the first pair of percwpoda is dilated and produced; the front side of the carpal process is shorter than half the hind margin of the metacarpus. The carpus of the second pair is produced; the front side of the carpal process is a little more than half as long as the hind margin of the metacarpus. The metacarpus of the first and second pairs has a single bristle on
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