CRUSTACEA MALACOSTRACA. 43 



I have observed a little variation in the spiny armature on the scutum. The general rule is 

 as described by Smith: "on the middle line of the gastric region back of the two rostral spines there 

 are, at nearly equal distances, first two single Spines, one behind the other, than a pair close together, 

 and lastly a single one". In a specimen from St. 18 there is in the middle line three unpaired spines 

 between the frontal and the set of paired spines further back; in a specimen from St. 36 there were on 

 the same line four impaired spines, the first two closely behind one another; lastly, in a specimen 

 from St. 40 five unpaired spines were present on this line, the three anterior being smaller than the 

 two others and so close together that they are joined at the basal ends. 



35. Nephropsis atlantica Norm. 

 ! 1882. Nephropsis atlantica Norman, Proceed. Roy. Soc. Edinb., Vol. XI, p. 684. 

 1896. Caullery, Ann. de l'Univer. de Lyon, 1896, p. 384. 



1901. — — Alcock, Descr. Cat. of Ind. Deep-Sea Crust. Macr. & Auomura, 1901, p. 161. 



Occurrence. This form was not taken by the "Ingolf". 

 South-WestoftheFa;roes:6i o8'N.L.,9 46'W.L.,45ofm.,( u Mich.Sars"i902); ilargemale(BergenMns.). 



— - — 59°28' — 8°oi' — 687-580 fin., 1 small spec. 



Distribution. This species was first discovered in the Fseroe Channel, 555 frn., temp. 5-5° 

 (Norman) and the specimens just mentioned also come from the same region. Later, it was taken by 

 the "Thor" at 49' 25' N. L, 12 20' W. L, 678—628 fm., and in the Gulf of Gascogne in 350 fm. (Caullen 1; 

 Stebbing notes it from a spot ea. 5 miles north east of Cape Natal and Alcock from the Arabian Gulf 

 near the Laccadives and further north, 636—740 fm. 



Remarks. The large specimen is 103 mm. long, right chela 27 mm., the best preserved 

 flagellum on the antennae measures 237 mm. though its distal end is broken off. Norman gives five 

 spines on the carpus of the first pair .of thoracic legs, but my large specimen has six; Smith gives 

 three spines in his A', aculeatus, which to judge from the description (Proc. U. S. Nat. Mus. Vol. Ill 

 f. 1880, p. 431) must be a different species from N. atlanticns. 



36. Nephrops norvegicus L. 

 1758. Cancer norvegicus Linne, Syst. Nat, Ed. X, p. 632. 

 ! 1S53. Nephrops — Bell, Brit. Stalk-eyed Crust, p. 251, with fig. 



1863. — — Heller, Crust, shell. Europa, p. 220. 



Occurrence. The "Ingolf" has not taken this species, but it was brought home by the "Thor" 

 both in 1903 and 1904. Adult specimens came from the two localities. 

 South of Iceland: 63° 16' N. L, 19° 57' W. L, 138—207 fm. 



— - — 63 29' — 2i° 25' — 50—69 fm. 

 Dr. Schmidt tells me that this species was taken by the "Thor" in epiautities in this district 

 south of western Iceland and it was so common that it formed the chief food of the cod. The "Thor" 

 took the small pelagic specimens and larvae in and near the area indicated by the latitude and 

 longitude of the two stations ; a young specimen was also taken near Skagi (a little north of Reykja- 

 uaes, south-west corner of Iceland). 



