92 



So far as I have been able to discover, the species [has not 

 previously been recorded from Irish waters. 



Helga. — 



L. 288.-3 II '04.— Ballynakill Harbour, Co. Galway.— One- 



72 mm. 

 S. 259.— 21 II '05. 15 mis. off Clogher Head, Co. Louth, 



32 J fms., mud. Trawl. — One. 



Genus Calocaris, Bell. 



Calocaris, Bell, 1853. Calocaris, Alcock, 1901. 



Body almost cylindrical ; the back arched so that its middle 

 point is considerably higher than the base of the rostrum. 

 From either margin of the rostrum there extends backwards 

 and outwards on the sides of the gastric area, a ridge armed 

 with teeth ; it does not reach the cervical groove, which is 

 distinct. A low but distinct carina runs from the rostrum to 

 the posterior margin along the dorsal median line of the carapace. 

 There are no pleurobranchiae. There is a suture on the exopodite 

 of the uropods. Deep-water habitat. 



Calocaris Macandreae, Bell. 



PI. XIV, figs. 5-7. 



Calocaris Macandreae, Bell, 1853. 



t Calocaris Macandreae, Alcock, 1901. U'av^. 



Calocaris Macandreae, Hansen, 1908. 



Calocaris Macandreae, Wollebaek, 1909. 



Calocaris Macandreae, Bjorck, 1913 (b). )l'^A~lbjjfJ 



This species has been so well described by Bell and Alcock, 

 that it is unnecessary to give here more than a brief summary 

 of the main characters. 



Carapace compressed, shorter than abdomen. Rostrum 

 slightly upturned, reaching very nearly to the end of the antennal 

 peduncle ; its margins are continued as prominent divergent 

 ridges on the gastric area, and bear teeth. 



Abdomen slightly tapering, smooth ; pleura broad with 

 rounded angles, except in the first somite. Telson broad ; often 

 more or less excavated on posterior margin ; sometimes with 

 a minute tooth at the tip ; the sides sometimes bear two or 

 three proximal teeth ; there are two diverging rows of spines 

 naming down the telson, but not reaching the margin. 



Eyes large and pigmentless ; practically no eyestalk. 



The fourth joint of the antennal peduncle is by far the longest ; 

 the scale is represented by a small spine, and to the inside of 

 this there is a second still smaller one. The flagellum is 

 slightly longer than the body. 



The two branches of the antennules are lashlike and slender ; 

 they are longer than the carapace. 



