I09 



border of the carapace as in Xcplir. Sibogae. Measured just outward of the lateral carinae, 

 the hinder edge of the cervical groove proves to be 20 nun. distant tVom the upper orbital 

 margin and 14 mm. from the posterior border of the carapace. The post-antennal spine is 

 large like in Ncphr. Sibogae and reaches probably just bej'ond the eye-peduncles: it remained 

 uncertain because the extremity of the left is broken off, while the right spine is still more 

 mutilated. Just behind and below it one observes the hepatic spine which is somewhat directed 

 inward. There is also a small spine at the upper end of the hepatic groove; of the two spines 

 situated between this groove and the anterior border of the carapace, the posterior is twice as 

 large as the anterior and two smaller spinules stand just before it. The upper surface of the 

 carapace is covered, between the outstanding lateral carinae and the jiost-antennal and hepatic 

 spines, with many small spinules of different size, which are more crowded and 

 somewhat larger posteriorly tlian anteriorly; a few, 4 or 5, very small spinules are seen on the 

 interspace between the lateral carinae. Behind the cervical groove the carai)ace is, like in the 

 other species, longitudinally traversed by 7 ridges, 3 on each side of the median ridge which 

 is in fact double, presenting two longitudinal rows each of 6 spines, that decrease in length 

 backward. The i""' and the 2'"' ridge, on each side of the median ridge, are spinulose, the 

 1^' presenting about a dozen spinules, the 2"*^ still more, though smaller; the 3'^'^ ridge is covered 

 with acute granules and carries a small sharp spine at the anterior end. The cardiac and 

 branchial regions are also covered between these ridges with sharp spinules, more crowded 

 and smaller on the branchial regions than on the cardiac. The infero-lateral sides of the carapace 

 between the inferior border, the hepatic sulcus, the hepatic s])inc and the 3'''' lateral ridges 

 are covered with small acute granules that disappear towards the inferior border. The 

 [josterior border of the carapace, bounded anteriorly by a groove, is smooth. The general 

 surface of the carapace is fmely pubescent. 



The i i r s t tour a b d o m i n a 1 somites resemble much those of Xcphr. nor- 

 lucgiais. bi the Norway Lobster the ])osterior, bandlike part of the !'•' tergum is separated 

 from the larger anterior overIa])])ed part by a transverse furrow, which is continued to near 

 the lateral margin of the pleura. In Xcphr. arajtirensis this transverse groove does not proceed 

 on to the pleura, but ends at their antero-internal angle; the pleura are, however, grooved by 

 a narrow furrow, that runs parallel with the posterior border from the outer margin of the pleura 

 towards the anterior groove. The anterior angle of the 1"' pleura ends in a small spinule. 



The posterior jjart of the 2"'', 3"' and 4''' somites is also separated from the anterior, 

 overlapped portion by a transverse furrow, that issues at the anterior angle of the pleura, antl, 

 like in Xcphr. norwcgiciis, the posterior part presents a transverse groove, which is 

 inUMTuptetl in the middle by a narrow median ridge, so that it is divided into two bands 

 which pass into one another on the lateral margin of the terga. In Xcphr. araj'itraisis the 

 anterior band or ridge is intersected by a narrow, oblique groove, which is wanting 

 in Xephr. )iorzoegictis \ this groove runs near the lateral end of the band and unites the anterior 

 groove with that which .separates the two bands from one another. On the 4''' (and also on 

 the 5''^) tergum of Xcphr. iiorwegicus the transverse furrow between the two bands or ridges 

 curves near the middle forward, intersectintr the anterior band and terminatintr into the anterior 



