270 CARL BOVALLIUS, AMPHIPODA HYPEKIIDEA. I. 2. HYPERUD^. 



Paratheviisto gracilipes. 



subequal, carpi scarcely inferiorly produced. First and second pereiopoda having the carpi con- 

 siderably broader than the propoda. Three posterior pairs of pereiopoda very long, subequal, 

 and having the anterior margins fringed with fine comb-like cilia.» 



»The hands can scarcely be described as subchelate, although they possess a tendency in 

 the direction comnion to most animals in the division.» 



»The caudal appendages are rather long and slender.» 



»We have frequently doubted vvhether this species strictly belonged to the present genus 

 {Hyperia). But finding that it agreed very closely with II. trigona, of Dana, from Cape Horn, 

 we have considered it desirable that it should remain therein for the present. The form of the 

 first two pairs of walking legs differ from the more typical species. The two succeeding pairs 

 of legs in their length and armature suggest a relationship to the genus Ct/llopus, which is also 

 supported by the form of the inferior pair of antenna;, but from that genus this species is ex- 

 cluded by the length of the last pair of walking legs, which in Cyllopus are rudimentary.» 



A. Merle Norman in 1869 says: 



»Bäte and Westwoods »H. oblivia», which has not the propodos of the gnathopods at all 

 produced, cannot be Kröyer's species nor that here described (= the true Paixitliemisto oblivia, 

 Kroeyer). i would propose for it the name H. gracilvpes.» 



7. PARATHEMISTO GOESI, n. sp. 



Pl. XII, lig. 1—10. 

 The name is given in honour of Dr Axel Goés of Kisa, Sweden. 



Diagn. Corpus non carinatum. Caput segmentis duobus primis peraji longius. Carpus pedum percei 

 primi paris metacarpo multo brevior; margo anterior levis, margo posterior spinis paucis 

 instructus; margo posterior metacarpi non serratus, spinam unara gerens; dactylus dimidium 

 metacarpi longitudine jequans. Metacarpus pedum secundi paris carpo multo longior; pro- 

 cessus carpalis dimidio metacarpi brevior, spina terminali carens; dactylus dimidio meta- 

 carpi longior. Metacarpus pedum tertii ac quarti parium carpo paullo longior. Metacarpus 

 pedum parium trium ultimorum articulis duobus prajcedentibus brevior. Pedunculus pedum 

 uri ultimi paris quam telson duplo longior; ramus externus interno longior. 



The body is not carinated. The head is louger than the first two perjeonal segments together. 

 The carpus of the first pair of pjerwopoda is much shorter than the metacarpus; the front 

 margin is smooth, the hind margin is provided with a few bristles; the hind margin of the 

 metacarpus is not serrated, and has a single bristle; the dactylus is half as long as the 

 metacarpus. The metacarpus of the second pair is much longer than the stem of the 

 carpus; the front side of the carpal process is not half as long as the hind margin of the 

 metacarpus, and wants a terminal spine; the dactylus is more than half as long as the 

 metacarpus. The metacarpus of the third and fourth pairs is a little longer than the 

 carpus; that of the last three pairs is shorter than the two preceding joints together. The 

 peduncle of the last pair of uropoda is twice as long as the telson; the inner ramus is 

 longer than the outer. 



