160 



12. Harpinia abyssi, (1. O. Sais. 



(ri. 66, fig. 1), 



Harpinia abyssi, G. O. Sars, Crustacea & I'ycnog. nov. etc. No. I'J. 

 Syn: Harpinia parinata, G. O, Pars (male). 



Body of female rather robu.st with bi-oaiUy vaulted back. Cephalon 

 scarcely exceeding in length the 3 anterior segments of mesosome combined, 

 hood evenly convex above and pi^ojecting but little beyond tlie peduncle of 

 the superior antennas. Coxal plates rather broad, witli a great number of 

 marginal setae ; l.st pair considerably expanded distally ; 5tli pair with tlie 

 posterior lobe rather deep and nearly transversely ti'uncated at the tip. 

 Metasome provided dorsally with extremely small hairs, only visible by a 

 strong magnifier ; last pair of epimeral plates obtusely rounded at the lateral 

 comers, inferior edge setons. First segment of urosome with a hump-like 

 projection dorsally. Sujierior antenna" with the 1st joint of the pedunide 

 very lai'ge, fully twice as long as the other 2 combined, and provided at the 

 end inferiorly with a group of 6 penicillate auditory bristles; Hagellum com 

 pai'atively short, scarcely exceeding half the length of the peduncle, and com- 

 posed of 7 articulations; accessory appendage somewhat shorter, and G-articu- 

 late. Inferior antenna^ scarcely as long as the superior, flagellum (5-articulate. 

 Penultimate joint in both pairs of antenna^ densely beset posteriorly with 

 strong plumose setae, (ruathopoda of moderate size, not very unequal, hand 

 in both oblong oval with the palmar edge very oblique and considerably longer 

 than the hind margin, thumb-like projection nearly obsolete. Penultimate 

 pair of pereiopoda exceeding half tlie length of the body, propodal joint hmg 

 and slender; last pair very small, basal joint forming at the end anteriorly 

 a densely setous expansion, posterior edge rounded and provided, in the lower 

 part, with a number of very small crenulations. Last pair of nropoda not 

 very large, both rami tipped by a single seta, the inner niucli shorter than 

 the basal joint of tlie outer, the latter witli (i spines exteriorly, it.'! terminal 

 joint extremely small. Lobes of telson very short, rounded at tlie tip. — 

 Adult male much more slender and compressed than the female, metasome and 

 urosome carinated dorsally, the carina forming on the 1st and 3rd segments 

 of urosome a roiTuded projecting lobe. Peduncle of both pairs of antennae 

 with dense brushes of seusory luiirs, basal joint of the Hagellum of the su- 

 perior ones, as usual, rather expanded and likewise densely hairy, (inathopoda 

 somewhat more slender than in female, but otherwise of rather similar structure. 

 Basal joint of last pair of pereiopoda more evenly rounded, with the anterior 

 expansion obsolete, and the posterior edge nearly smooth. Last pair of uro- 

 poda with the rami somewhat expanded, the outer slighth- longer than the 

 inner and provided on the outer edge with a series of 6 snuiU hairs, terminal 



