KONGL. SV. VET. AKADKMIKNS IIANDLINGAK. J5AN1). 22. N:o 7. 221 



The original description given by Dana run.s: 



»The facets covei- a very large part of either side of the liead. The front of the hcad in 

 profile is somewliat concave near or below the base of the superior axitennii;, hut much less 

 so than in Edwaeds' figure. The four posterior segments of the tliorax are distinct, and the 

 first three are coalesced along the back. Autennaj longer than tlie body; two fringes of hairs 

 on under side of third basal joint of the sviperior antennas, very delicate and close; apex of next 

 joint not acute; flagella very sleuder, consistiiig of very long joints, excepting part of fiagellum 

 of superior pair, near the basal portion of the antennre; twenty joints or more to the flagelluni 

 of this pair. First and seond pairs of legs nearly equal, terminating in an iniperfect hand, the 

 lower apex of the autepenult joint beiug prolonged to about half the length of the next joint, 

 which is subcylindrical. Third and fourth pairs equal; seventh pair longer than either of the 

 preceding; these legs naked and without a longuish seta on fourth joint, as in the riihesceiin; tarsus 

 about one-third the length of the preceding joint. Basal joint in fifth, sixth, and seventh pairs 

 narrow, rounded or obtuse at apex. Caudal segment of abdomen about half as wide as preced- 

 ing, and nearly half as long as posterior caudal stylets, exclusive of the two terminal lamellas. 

 Posterior caudal stylets rather broad, the lamella equal, broad oval-lanceolate, about one-third 

 as long as basal portion.» 



As the species described by Dana is thus not identical with Hyperia Fahrei, H. 

 MiLNE Edwards, and seems to be a well defined species, I propose for it the new name 

 Hyperia Danas. 



As its specific characteristics may be pointed out: 



The lower part of the head is rounded, not produced. 



The first three perceonal segments are coalesced. The carpus of the jirst ijair of 

 peneopoda is produced into a process nearly half as long as the hind margin of the 

 metacarpus. 



The seventh pair of perceojjoda are longer than the others. 



The inner ramus of the third pair of uropoda is not longer than the breadth of 

 the peduncle. 



The telson is a little broader than, but not not half as long as, the peduncle of 

 the last pair of uropoda. 



I 



17. HYPERIA SCHIZOOENEIOS, TH. STEBBING, 1888. 



Diagn. Caput maximum, infra acute productum, segmenta quinque prima persi longitudine iequans. 

 Segmenta tria prima jjercei coalita, cetera libera. Carpus j^fdwn percei primi paris dila- 

 tatus ao productus; margo anterior processus carpalis dimidio marginis posterioris meta- 

 carpi brevior. Carpus pedum secundi paris productus; margo anterior processus carpalis 

 dimidio marginis posterioris metacarpi longior. Metacarpus pedum primi et secundi pa- 

 rium spinam singulam margini anteriori affixam gerens; margo posterior serratus, dentibus 

 simplicibus; dactylus longus. Pedes tertii ac quarti parium pedibus parium duorum prre- 

 cedentium paullo longiores; carpus non tumidus, spinis duobus margini posteriori aftixis 

 instructus; metacarpus carpo paullo angustior, serratus. Pedes parium trium ultimorum 

 duobus prascedentibus non longiores; carpus tibia longior; carpus metacarpusque serrati! 

 dactylus longus, simplex. Latera segmentorum plei post rotundata. Pedunculus pedum 



