336 CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2. PHRONIMlDiE. 



Dairella californica. 



of the outer ramus in the third pair; the peduncle is much narrower than in the iirst 

 pair, and is narrower at the base than at the apex; it is four times as long as broad at 

 the apex, and is twice as long as the inner rainus; it has the inner margin armed as in 

 the first pair; the rami are elongate-lanceolate, and are subequal in length, the outer rather 

 somewhat longer; the rami are serrated bn both margins. The peduncle of the third pair 

 is broad, laminar, constricted at the base, and more than twice as long as it is broad at 

 the base, and more than twice as long as the inner ramus; the inner margin is fringed 

 with minute spines; the rami are narrowly ovate, equal in length, and much distant from 

 one another; the inner ramus is serrated on the both margins; the outer ramus is serrated 

 on the inner margin and smooth on the outer. 



The telson is broader than long, obtuselj^ rounded, and less than a third part as 

 long as the last coalesced ural segment; it is a little more than half as broad, and a 

 seventh part as long, as the peduncle of the last pair of uropoda. 



2. DAIRELLA LATISSIMA, C. BOVALLIUS, 1887. 



Pl. XV, fig. 1—20. 



Diagn. Caput segmentis tribus primis peraji multo brevius. Segnienta duo priora percei coalita, cetera 

 libera. Pedes percei quinti paris pedibus quarti paris multo longiores, ac quam perjeon 

 longiores; femur carpo haud longius. Femur pedum parium trium ultimorum modice di- 

 latatum, ter quaterve longius quam latius. Pedes uri primi paris apicem pedum ultimi 

 paris non attingentes; rami pedum ultimi paris late ovati. 



The head is much shorter than the first three perseonal segments together. The first two 

 perceonal segments are coalesced, the following are free. The fifth pair of perceopoda are 

 much longer than the fourth, and are longer than the perajon; the femur is not longer 

 than the carpus. The femur of the last three pairs is moderately dilated, three or four 

 times as long as broad. The first pair of uropoda do not reach to the apex of the last 

 pair; the rami of the last pair are broadly ovate. 



Colour. Red, with spöts and bands of very deep red, especially on the legs. 



Length. 6 — 8 mm. 



Hab. The temperate and tropical regions of the Atlantic. (D. M.; F. M.; S. M.; U. M.). 



Syn. 1887. Dairella latissima, C. BOVALLIUS. 



1888. Dairella Bovallii, TH. STEBBING. 



"Systematical list of the Amphipoda Hyperi. 



idea». Bili. t. K. Sv. Vet. Ak. Handl. 



Bd. 1. N:o 16, p. 24. 

 »Report on the Amphipoda». Voy. of H. 



M. S. Challenger. Zoology. VoL 29, 



134.3, pl. 158. 



