140 Metaphoxus, Harpinia 



longer than broad, a little tapering distally, while in gnathopod 2 it widens 

 a little distally, with a length not much exceediDg its cousiderable breadth. 

 Peraeopods 1 and 2, 7*^ Joint about -^j^ length of 6*'^. Peraeopod 4 nearly % 

 length of the body, 4^^ Joint as long as 5^^. Peraeopod 5, 2*^ Joint as long 

 as rest of limb, not quite so broad as long, hind margin with about 3 

 shallow teeth, not produced below the 4*^1 Joint, joints 3 and 4 in 9 with plumose 

 setae, Joint 5 in cJ with 3 or 4 curved blunt spines forming comb on 

 distal half of front margin. üropod 3 in 9 as in Phoxocephalus holböUi 

 (p. 134), in ö inner ramus as long as P*' Joint of outer, the latter without 

 spines on outer margin. Telson as in P. holböUi. L. 3 mm. 



Firth of Clyde; English Channel (üuernsey, (lepth 13 ni; France). 



5. Gen. Harpinia Boeck 



1842 Phoxus (part.) (Spinifer Holboll in MS., part.), Kreyer in: Naturh. Tidsskr., 

 V.4: p. 150 I 1871 Harpina (non Burmeister 1844, Coleoptera!), A. Boeck in: Forh. 

 Selsk. Christian., 1870 p. 135 | 1876 Harpinia, A. Boeck, Skand. Arkt. Amphip., v.2 

 p.218 I 1888 H., T. Stebbingin: Rep. Voy. Challenger, u29 p. 819 | 1891 H., G. O. Sars, 

 Crust. Norway, v. 1 p. 150 \ 1893 H., A. DellaValle in: F. Fl. Neapel, v. 20 p. 744. 



Body rather broad. Head with evenly vaulted hood, not carinate or 



deflexed. Side-plates plumose, 4**^ broadly produced backward, 5*^ with 



oblique hind lobe. Eyes wanting. Antenna 1, 1^* Joint very 



large, carrying sensory bristles and in ö densely setose, accessory 



flagellum long. Antenna 2 with many spines and setae on 



peduncle. of which the penultimate Joint is broad. Primary 



flagellum not long in either antenna in either sex. No calceoli. 



Mandible with short cutting edge, dgnticulate accessory plate 



on left mandible, spine-row, feeble molar tipped with slender 



spines, palp slender, armed chiefly on truncate tip of long 



3*^ Joint. Maxiila 1, 9 spines on outer plate, palp 2-jointed. 



H.mucronata. Maxilla 2, platcs subcqual. Maxillipeds, plates slender, palp 



Peraeopod 5. elougate. Tu ö the mouth-organs are subject to degTadation. 



^'^^ sars^ ^ Gnathopods 1 and 2 similar, 6*^ Joint oval, palm more or 



less oblique. Peraeopod 3, 2*^ Joint linear. Peraeopod 4 much 



longer than the rest, 2*^ Joint narrowed distally. Peraeopod 5 (Fig 38) rather 



small, 2^ Joint much expanded. üropod 3 in 9 rather short, outer ramus 



the longer, with spines; in ö longer, both rami knife-shaped. and as a 



rule unarmed. Telson with rounded apices. 



12 species. 



Synopsis of species: 



I Pleon Segment 3, postero-lateral aiigles acutely 

 1 l produced — 2. 



I Pleon Segment 3, postero-lateral angles rounded — 10. 



( Peraeopod5,2djointwithapronouncedspur(Fig.38) 1. H.mucronata. . p. 141 

 I Peraeopod 5, 2d Joint without a pronounced spur — 3. 



I Pleon Segment 3, postero-lateral corners abruptly 

 upturned 2. H. crenulata . . ]). 141 

 Pleon Segment 3, postero-lateral corners not 

 abruptly upturned — 4. 



j Peraeopod 5, 2d Joint deeply serrate — 5. 



\ Peraeopod 5, 2d joint not deeply serrate — 6. 



