10 CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2. CYLLOPODIDiK. 



The fifth and sixth pairs are subequal, the femur of the sixth pair being a little 

 longer and broader than that of the fifth. The femur is ovate, scarcely as long as the 

 two following joints together. The carpus is smooth; the anterior margin of the 

 metacarpus is fringed with very short bristles; the metacarpus is a third longer than 

 the carpus. The dactylus is very short. 



The seventh pair (PI. I, fig. 40) have the femur as long and broad as the femur 

 of the preceding pair, a little broader above; the anterior margin is fringed with some 

 few minute hairs, the posterior is straight, totally smooth; the femur is three times longer 

 than the following joints together. The carpus and metacarpus are equal in length. 

 The dactylus is a third shorter than the metacarpus. 



The pleon is as long as the whole pereion. The second segment is the shortest; the 

 first and third are equal in length. 



The peduncles of the pleopoda are longer than the rami. 



The urns is considerably shorter than the last pleonal segment (7:10). The first 

 segment is longer than the two following together, the second is almost as long as the third. 



The peduncle of the first pair of uropoda is scarcely shorter than the exterior ramus 

 (10:11), broader below; both rami are lanceolate, sharp-pointed, coarsely serrated along 

 both margins, the exterior ramus is shorter than the interior. The peduncle of the second 

 pair (PL I, fig. 41) is very short a little more than a third of the length of the rami 

 (4:11); the rami are almost equal in length, the exterior is lanceolate, sharp-pointed, coar- 

 sely serrated, the interior elongate-ovate, the posterior end broadly rounded, finely serrated 

 all around. The peduncle of the last pair is long, linear, about twice as long as the rami, 

 which are equal in length, lanceolate, sharp-pointed, minutely serrated. 



The telson is broadly rounded, almost semicircular, a little shorter than the last ural 

 segment, scarcely as long as a fifth of the length of the last peduncle. 



4. CYLLOPUS ARMATUS, C. BOVALLIUS, 1887. 



PI. I, fig. 1—35. 



Diagn. Caput non productum, segmentis tribus primis pereii brevius. Antennae primi paris abrupte 

 angustatse, apice cylindrato. Segmentum primum pereii brevissimum, segmentum quartum, 

 quintum ac sextum longissima. Epimera quattuor prima sequentibus non altiora. Carpus 

 primi paris pedum pereii latus, non productus, metacarpo longior; metacarpus composite 

 serratus. Carpus pedum secundi paris productus, fortiter serratus, metacarpo longior. Meta- 

 carpi pedum quinti ac sexti parium carpis multo longiores. Pedes septimi paris femore 

 pedum sexti paris longiores; femur post non excavatum, articulis sequentibus duplo longius. 

 Latera segmentorum plei duorum priorum rotundata, post serrata, latera segmenti ultimi 

 leviter rotundata, non serrata. Segmentum secundum ac tertium uri libera, non coalita. 

 Pedunculi pedum uri primi et secundi parium ramis paullo breviores; pedunculus pedum 

 ultimi paris ramis duplo longior. Telson semicirculare, segmento ultimi uri multo bre- 

 vius, quartam partem longitudinis pedunculi pedum uri ultimi paris asquans. 



