148 



from that form by the jieculiar manner in which tlie hood of the eephalon 

 terminates, its point being deflexed in the form of a liook, a characteristic that 

 gave rise to the specific name falcatus subsequently pro]wsed 1)^- the author. 

 The absolute want of eyes is another characteristic to distinguish this species 

 from the species of Sp. Bate, which, to judge from the above-mentioned sjiecimens 

 from the French coast, has well-developed visual organs, though the pigment, 

 after long immersion in spirit, may, more or less completely, disappear. 



Occurrence. — I have met with this form not rarely in several places 

 off the south and west coast of Norway, as also in the Trondhjemsfjord and 

 off the Nordland coast, in depths varying from 30 to 200 fathoms, muddy 

 bottom. Boeck collected it at Haugesund and in the Christianiafjord, where 

 I have also found it rathei' abundantly. 



Didrihution. — Cloast of Bohuslan (Stockholm Museum). 



Gen. 5. ParaphoxUS, a. O. Sars, n. 



Body rather stout, and but little ecnnjjressed. Hood of ee]ihalon evenly 

 vaulted, not carinated, nor deflexed at the point. Tlie 4 anterior pairs of 

 coxal plates rather deep and provided on the distal edge with a series of 

 simple bristles ; 1st pair only very slightly exjianded distally ; 4th ])air rather 

 broad and deeply emarginated posteriorly in their upper part; 5th pair with 

 the posterior lobe rounded. Antennae in female nearly equal-sized; inferior 

 ones in male not very elongated, flagellum very narrow and composed of a 

 rather restricted number of elongated articulations provided with comparatively 

 large calceolae. Mandiljles with the molar exjiansion ])oorly developed, forming 

 a very small lappet tipped with 2 slender spines, palp extremely narrow and 

 but sparingly Ijristle-beset. First pair of maxillse with the palp larger than 

 in the 2 preceding genera, though only consisting of a single joint ti]iped with 

 small bristles ; 2nd pair with the inner lobe smaller than the outer. Maxillipeds 

 with the basal lobe ol)tiisely rounded at the tip, penultimate joint of the 

 palp oval, not produced at the outer corner, dactylus very slender and curved. 

 Gnathopoda exactly alike both in .size and structure, hand oval, constricted 

 at the base. Pereiopoda aboiit as in Phoxocephalus. Last i)air of uropoda 

 rather dissimilar in the two sexes, in female comjiaratively simple in struc- 

 ture, with the inner ramus much shorter than the outer ; in male much larger, 

 with both rami well-developed, and fringed with ciliated setse. Lobes of tel- 

 son rather narrow. 



