Die nordischen Scliizopodcn VI 123 



ininiediatfiy in front of it. Eyes ratlier large, sct close togetiier, tlie anterior and 

 posterior margins of tiieir peduncles not noticeably diffcriiig in Icngtii; colonr 

 orange-brown after preservation. Antennnlar peduncle witii the basal Joint as long 

 as the two remaining, its oiiter corner prodiiced into a soniewiiat acute process 

 fippcd witii tliree or four setae; middle Joint nincli the shortest of the thrce; distal 

 Joint with a sniail spine at its inner distal corner, male process of moderate size 

 but very hirsnte. Antennal peduncle with the proximal Joint small, middle Joint 

 once and a half times as long as the distal; these last two joints beset at their 

 inner distal angles with a bunch of setae. Antennal scale about three times 

 as long as broad; outer margin entire, terminating in a strong spine, the 

 extremity of which is about at the level of the extremity of the peduncle; apex 

 very obliquely truncate, about one-thiril of the length of the scale being bcyond 

 the extremity of the spine; extremity of scale at about the level of that of anten- 

 nnlar peiiimcle. Mandibles generally as in Eryfhrops, three-jointed, first Joint small. 

 second longer than third and unusually broad, its greatest width being more than 

 half (17:30) of its length; last Joint tipped with a fine seta as long as itself, 

 First and second maxillae generally as in Erythrops. First thoracic limb with 

 endopod as in Erythrops, exopod with a small spine at its distal angle, flagelliform 

 part with nine joints. Second thoracic limb with endopod proportionally shorter 

 and stouter than in Erythrojis, carpus much shorter than merus. Exopods of 

 second and succeeding thoracic limbs with flagelliform parts of ten joints. All the 

 thoracic limbs with small forwardly directed digitiform epipodites on the basal 

 parts. Ventrimi, in the male only, armed between each of the pairs of thoracic 

 limbs with a forwardly directed sickle-like process, terminating in a stout spine, 

 its posterior or inferior edge beset, except proximally, with short spines; also 

 armed between the first to third pairs of pleopods with short .simple spineless 

 processes. Pleon distinctly narrower than carapace, the sixth segment about as 

 long as the two preceding taken together. Pleopods generally as in Erythrops, but 

 with the second to fiftli of the male having the lateral lobe of the inner ranuis 

 produced inferiorly into a considerable ovoidal slightly pedunculate lamella of 

 about one-third of the length of the whole ranuis. Telson more than half as long 

 as the inner uropod; its apex broadly truncate but somevvhat rounded at the angles, 

 armed with a median pair of setae and with one small and two large spines on 

 eitlier side, the outer spines the longest; lateral margins armed on aboUt the 

 distal three-fourths with a series of about seven to nine spines increasing in length 

 from in front backwards the posterior spine incurved and occupying the angle of 

 the apex. Inner urofiods somevvhat the shorter, unarmed ventrally. Otocyst 

 somewhat unusually inflated. 



Length of adult males and females, 10 mm." (I. c.) 



Verbreitung: Bisher nur aus den irischen Gewässern (164 — 288 F.) bekannt. 



Gattung Longithorax 111 ig. 



1904. Longithorax O. Illig, Zool. Anz. v. 30 p. 200. 



