— i 9 — 



has a rather low keel accompanied on each side along nearly 

 its anterior half by a conspicuous sublinear excavation. The 

 eyes are almost medium-sized, black ; the eye-stalks, as in 

 the preceding species, without any 

 tubercle. The basai joint of the 

 antennular peduncle has above in 

 front of the eyes a thickened elevated 

 portion adorned with numerous 

 hairs; anteriorly this portion is pro- 

 duced into a very oblong-triangular 

 lobe terminating in a long spine 

 directed forwards and a little out- 

 wards along the upper surface of Fjg. i6.~ Left maxillula of the 



, • • - 11 same spécimen, from below. 



second joint not quite to its end ; the h 

 distal outer angle of the same joint has two spines of différent 

 size. Second joint of the peduncle is above produced into a long 

 fiât lobe, the outer angle of which terminâtes in a conspicuous 

 spine ; seen from the side (fig. 14) the whole lobe with its spine 

 looks as a very long spine. Third abdominal segment has a thin 

 dorsal spine on the posterior margin. The endopod of the uro- 

 pods is somewhat shorter than telson, while the exopod reaches 

 exactly to its tip. — Length of a probably adult female 3o mm . 

 Locality. — Stat. 1768, 1 spécimen. 



Remarks. — By the shape of rostrum, the armature of the 

 antennular peduncles and especially by the latéral ridge and 

 impressed line on the carapace this species is abundantly 

 distinguished from ail other forms hitherto known. By the 

 shape of the maxillulas (fig. 16) and absence of gastro-hepatic 

 groove it shows itself to be related to T. obtusifrons, T. pecti- 

 nata> etc. 



8. Thysanopoda insignis. n. sp. 



(Figs. 17-19) 



Description. — Carapace without latéral denticles. A deep 

 gastro-hepatic groove is found across its dorsal part, and this 

 groove is at the end connected with more latéral grooves shown 

 on figs. 17-18. On the posterior 2/3 of the carapace two 



(30) 



