Die nordischen Schizopoden. VI 95 



apex produced considerably beyond tlie spine, sub-acute, setae confined to the apex 

 and to about the distal third of the inner margin; length of scale more than four 

 times (about 14:3) the greatest width, sligthly less than the combined length of 

 the last two joints of the antennal peduncle and but little exceeding the length of 

 hte last Joint of the antennular peduncle. Antennal peduncle long and propor- 

 tionally stout, combined length of the last two joints greater than that of the last 

 Joint of the antennular pedunle. Exopodits of the thoracic limbs very well developed, 

 wich unusually large flagella. Endopodits of the first four pairs, moderately long and 

 stout; the tarsus in the third and fourth pairs consisting of three joints and suc- 

 ceedet by a well-developed dactylus, setae not more plumose than in Parerythrops 

 & c. Pleopods of all five pairs biramous in the male, the inner ramus bifid. 

 Telson subtriangular, shorter than the last segment of the pleon by about two- 

 sevenths of the length of the latter, its sides entire and slighty inflected; apex 

 narrowly truncate, armed with two pairs of rather slender spines, of which the 

 inner are considerably the longer and stouter; a median pair of setae possibly 

 present. Outer uropod the longer, its length, including basal articulation, sligthly 

 greater than the combined length of the fift and sixth segment of the pleon." (1. c.) 

 Länge 8 mm. 



Verbreitung: Bisher nur in 5 Exemplaren von der irischen Küste und 

 aus dem Meere bei den Canarischen Inseln und Azoren bekannt. Die Tiefen- 

 verbreitung läßt sich nicht angeben, da das Tier wahrscheinlich pelagisch ist und 

 die Netze aus großer Tiefe bis Oberfläche gefischt hatten. 



Gattung Dactylerythrops H. u. T. 



1905. Dactylerythrops Holt u. Tattersall, Fisheries Sei. Invest. 1902/03. IV. p. 121. 



„Characters generally as in the genus Amblyops G. O. Sars, except: Eyes 

 small, not exhibiting any definite eye-stalk, but joined at their bases by a mem- 

 branous integument; Visual Clements impcrfectly developed, not reaching to the 

 surface of the eye, but rather deeply seated in its tissues; outer distal corner pro- 

 duced into a rather long digitiform flexible process. Telson entire, rather small, 

 subtriangular or lanceolate in shape, lateral margins armed distally with more or 

 fewer spines, median apical pair of setae present or absent. Incubatory lamellae 

 in the female, two pairs." (H. Tattersall, An. nat. hist. ser. 7 vol. 19 p. 109.) 



Bestimmungsschlüssel der nordischen Arten: 



1. Die Antennenschuppe reicht bis zum Ende des Stammes der ersten Antenne: 



D. daciylops. 

 Antennenschuppe etwa doppelt so lang wie der Stamm der ersten Antenne: 2 



2. Die Augen sind fast ganz vom Carapax bedeckt und nur die fingerförmigen 

 Fortsätze ragen unter ihm hervor: D. gracilura. 

 Ein größerer Teil des Auges ragt unter dem Carapax hervor: D. bidigitata. 



