﻿CRUSTACKA MALACOSTRACA. II. 23 



1899. Taiiais Cavoliiiii A. !\I. Nornian, Ami. Mag. Nat. Hist. .Sen 7, \'ol. Ill, p. 332. 



1905. — — Harr. Richardson, Moii. Isop. North America, Ihill. U. S. Nat. Mu.s. No. 54, p. 8. 



The tangled synonynn- o\ this well-known species is lonud in Norman's and Miss Richardson'.s 

 papers. 



Occurrence. The "Ingolf" secured this species at a single locality. 



Fseroes: Trangisvaag, between algfc at the shore. Many specimens. 



In the paper on the Malacostraca from West Greenland I stated that a specimen with the 

 label: "Greenland, Kroyer's effect.s", was preserved in the Copenhagen Museum; for this reason I 

 mentioned the species, but did not number it, as I feared that the statement was not quite certain. 

 Nevertheless Norman and other authors have on \\\\- authority included "Greenland" in the enumeration 

 of the distribution of the species. But as T. Cavoliiiii has not been found at Iceland and has not in 

 recent time been captured at Greenland I am now nearly sure that the species does not live at the 

 last-named country. 



Distribution. This species is known from Oresund (Kroyer), the western coast of Norway 

 northwards to Lat. 63°2o'N. (G. O. Sars), .Scotland northwards ab. to Lat. sG'/. N. (Norman), Eng- 

 land and Ireland (several authors), the Channel Islands (various authors). West France iChevreux), 

 many places in the western half of the Mediterranean (several authors), Azores (Barrois); finally 

 Connecticut, Long Island Sound and Castle Harbour, Bermudas (H. Richardson). It lives ahva\s in 

 quite shallow water, from the beach down to a few fathoms. 



Pseudotanais g. o. s. 



Of this genus five valid species have been established; four of these are boreal or arctic, while 

 the fifth species is only known from the Mediterranean. The "Ingolf" captured six species, three of 

 which are new. 



This genus differs materially from all other genera by having fifth and sixth thoracic segments 

 very long as compared with the fourth segment and especialh- with third and second segments. It 

 is placed here because in some other features it is intermediate between Taiiais and Parataiiais — 

 Typlilofiiiiais. It agrees with Tuiinis and differs from the other genera in pcssessing onl\- a single 

 pair of marsupial lamellae; as to antennuke, antenn;e, uropods and development of second pair of legs 

 as compared with the following pair it agrees on the whole with Parataiiais — Typlilotaiiais ; as to the 

 mouth-parts — mandibles and maxillipeds — it differs strongl)- from the genera named and is more 

 related to Lrptfloimtliid. though showing peculiarities not found in the last-named genus. 



14. Pseudotanais forcipatus Lilljeborg. 

 ( PI. 1 1, figs. 3 a — 3 e). 



1864. 'J'aiiais forcipaliia Lilljeborg, Bidrag till kannedomen oni de inom Sverigc och Norrige 



forek. Crust, of Tanaidernas lamilj., j). 16 (Female and Malel. 



11897. I'sriidolaiiais /orcipuliis (t. (). Sars, Acc(Miut Crust. Norw., \'ol. II, p. .10; PI. X\'1I, fig. i (Female 



and subadidt Male). 



