Die nordischen Scliizopoden. VI 95 



apex prodiiced considerably beyoiul tlic spiiic, siib-aciitL', setae coiifiiieil to tlic apex 

 and to aboiit tlic distal tliird of tlie inner niargiii; ieiiL;;tli of scale more than fonr 

 times (about 14:3) the greatest widtli, sligthly less tiian the combined length of 

 tlie last two joints of the antennal pedimcic and but little exceeding the length of 

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

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

 Joint of the antennular pedunle. Exopodits of the thoracic linibs very well devcloped, 

 wich nnusually large flagella. Endopodits of the first fonr 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 niore phnnose than in Parerythrops 

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

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

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

 narrowly truncate, arnied with two pairs of rather siender spines, of which the 

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

 present. Onter uropotl the longer, its length, incliiding basal articulation, sligthly 

 greater than the combined length of the fift and sixtli segment of the pleon." (I. c.) 

 Länge 8 nmi. 



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

 ans dem Meere bei den Canarischen Inseln unti 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. luvest. 1902 03. IV. p. 121. 



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

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

 branous integument; visual Clements imptrfectiy developed, not rcaching 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 abseilt. Incubatory laineliae 

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



Bestimmungssclilüssel der nordischen Arten: 



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



D. daciylops. 

 Antennenschnppe 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. 



