34 



CRUSTACEA MALACOSTRACA. 



24. Munida tenuimana G. O. Sars 



iPl. II, fig. 4a; PI. Ill, fig. I a). 



1872. ]\Iianida tenuimana, G. O. Sars, Vid. Selsk. Forh. Chri.stiania, f. 1871, p. 257. 



j8g2. — — — — — — f. 1882, no. 18, p. 44, Tab. i. Fig. 6. 



Occurrence. The ''Ingolf has taken this species at a number of localities. 



Davis Straits: St. 35 



- — - 27 



- - - 25 



: 65° 16' N. L., 55°o5'W. L., 362 fm., temp. 3-6°; i spec. 

 :64°54' — 55° 10' - 393 — - 3"8°; 4 — 

 :63"3o' - 54° 25' — 582 - - 3-3°; I — 

 We.<t of Iceland: St. 16: 65° 43' N. L., 26° 58' W. L., 250 fm., temp. 6-i°; i spec. 



— - - - 97: 65° 28' — 27° 39' — 450 -- - 5'5°; 32 - 



— - — - 89: 64° 45' — 27° 20' — 310 — — 8-4°; II — 



— - — - 90: 64° 45' — 29° 06' — 568 — - 4-4°; 13 - 



— - — - 9: 64° 18' - 27° 00' — 295 — — 5-8°; 34 - 

 South-West of Iceland: St. 73: 62° 58' N. L., 23° 28' W. L., 486 fm., temp. 5-5°; 



— - - - 84: 62° 58' — 25° 24' 



— - — - 69: 62° 40' — 22° 17' 



— - — - 74: 62^17' — 24° 36' 



— - — - 81: 61° 44' — 27° 00' 



— - - - 78: 60° 37' — 27° 52' 

 South-East of Iceland: - 52: 63° 57' — 13° 32' 

 I have also seen specimens from 64°42'N.Iv., 27°43'W.L., 426 fm., temp.6° (Wandel); 62° 12-5' N. L., 



20°o6'W.L., 271 fm. ("Thor" 1903); 62°57'N.L., 19° 58' W. L., 509 fm. ("Thor" 1903); from the two following- 

 localities lying south-west of the Fseroes ("Michael Sars" 1902): 6i°S'N. L., 9°33'— 9°46'W. L., 425—460^.11., 

 I specimen, and 59°28'N. L., 8°i'W. L., 580 — 687 fm., 5 specimens; lastly, it has been twice taken in 

 1904 ("Thor") near the first-named of tJie "Michael Sars" stations. 



Distribution. The species was taken by Sars in the deep Norwegian fjords lying between 

 about 60° and 68° 12' N. L., in depths between 300 fm. and 672 fm. In the Skager Rak it has been 

 taken by Joh. Petersen in 210, 265 and 300 fathoms. From these data with those of the "Ingolf etc. 

 we see that the species is commonest in depths between 300 and 600 fm., the extreme limits being 

 210 fm. and Scx) fm.; the bottom-temperatures were between 3-3° and 8-4°. It certainly goes tolerably 

 far southwards in the deeper water of the Atlantic off southern Europe and perhaps northern Africa, 

 but future investigations must determine more precisely how far it has been confused with M. bainf/ica. 



Remarks. The largest specimen, a female from the Skager Rak, is 87 mm. long to the tip 

 of the rostrum; the largest "Ingolf" specimen is an egg-bearing female from St. 27; if the rostrum 

 were complete it would measure ca. 74 mm.; the largest of the more than a hundred specimens from 

 St. 78 is a male 64 mm. long. As can be seen, my material is very large and I have found it very 

 easy to separate every single specimen that was at least about 20 mm. long from the previous species 

 with perfect certainty. The best character is given by the sternum of the thorax, which has hitherto 

 been overlooked. In both species the sternum is divided into 4 segments by raised cross-lines furnished 



