54 CARL B0VALL1US, AMPHIPODA HYPEM1DEA. VIBJLID^E. 



there is no such impression; the first segment is a little shorter than the second; the se- 

 venth segment is the longest. 



The first pair of pereiopoda (PI. VIII, fig. 12) have the carpus dilated at the hinder 

 lower corner, and rounded, but not produced into a process. The metacarpus is a little 

 longer than the carpus, sharply serrated along the hinder margin. The dactylus is longer 

 than half the metacarpus, serrated along the hinder, concave margin. 



The second pair (PI. VIII, fig. 13). The tibial process is longer than half the carpus, 

 fringed with long bristles. The carpus equals the metacarpus in length, the process 

 is straight, sharply serrated, a little longer than half the metacarpus. The metacarpus 

 is sharply serrated along the hinder margin; the dact)Tus as in the preceding pair. 



The third and fourth pairs (PI. VIII, fig. 14) are only a little shorter than the 

 fifth pair. The metacarpus is longer than the carpus, smooth; the dactylus is nearly half as 

 long as the metacarpus. 



The sixth pair (PI. VIII, fig. 15) are somewhat longer than the fifth. The femur is 

 laminar, linear, with three small teeth at the lower anterior corner. The metacarpus is 

 finely serrated along the anterior margin. The dactylus is longer than a third of the 

 metacarpus, smooth. 



The seventh pair (PL VIII, fig. 16) are short, scarcely more than half as long as 

 the fourth pair; the femur is small, as long as the three following joints together. 



The pleon is a little longer than the last three pereional segments together; the lateral 

 parts of the segments are deep, evenly rounded. 



The peduncles of the pleopoda are shorter than the rami; the rami are 9- to 10- 

 jointed. 



The second and third coalesced ural segments are longer than the first; the hinder 

 corners are angular, not produced. 



The peduncles of the uropoda (PI. VIII, fig. 17) are longer than the rami, those of 

 the first pair are serrated along the outer margin. The exterior rami are a little shorter than 

 the interior, all finely serrated. 



The telson is obtusely triangular, as long as half the last ural segment, and a little 

 longer than half the peduncle of the last pair of uropoda. 



6. VIBILIA ROBUSTA, C. BOVALLIUS, 1887. 



PI. VII, fig. 12—34. 



Diagn. Caput non rostratum, segmenta dua priora pereii longitudine aequans. Oculi modici. Flagel- 

 lum antennarum primi paris ante obtusum, caput longitudine jequans. Pedes pereii elongati 

 non hirsuti. Femora pedum primi et secundi parium lata, ovata; carpi inetacarpis longiores; 

 processus carpi pedum secundi paris dimidium metacarpi aequans. Tibiae pedum tertii ac 

 quarti parium non tumidae, dactyli breves. Pedes quinti paris pedibus tertii ac 

 quarti parium multo longiores; pedes sexti paris pedibus quinti paris longiores; femora 

 lata ovata, dactyli breves. Dactylus pedum septimi paris metacarpo multo brevior. 



