CRUSTACEA MALACOSTRACA. III. 



expanded below and almost oblong-triangular, distinctly more than twice as long as deep, but scarcely 

 ever more than two and a half times as long as deep (in the figure of Sars it is somewhat too narrow), 

 with 9—11 — rarely, and perhaps anomalously, with 7 or 8 — spines and setae along the lower margin, 

 the three or four distal ones being very long and rather thick, spiniform with their terminal part setiform, 

 the others o-raduallv much shorter and thinner, so that the three or four proximal ones are real setae; 

 besides, 6 or 7 long setae are found in a row on the outer side of the joint below the upper margin; 

 sixtli joint is conspicuously more than twice as long as deep, with 2 setae on the lower and 7 to 9 setae 

 on the upper margin, most of them long, and about the 3 distal ones very strong, nearly spiniform. — 

 The abdomen, which has been well figured by Sars, is characteristic, a little longer than broad, ovate; the 

 uropods are proportionately long, a little more than half as long as the abdomen, with the rami slender, 

 and the exopod almost or not fully half as long as the endopod. 



Length of the largest specimen (from East Greenland) 2-6 mm. 



Remarks. D. globiccps is easily distinguished from D. tenuimanum G. O. S. in having the first 

 pair of legs much stronger and shorter, a considerably lower number of spines and setae on fifth and 

 sixth joints of second pair of legs, etc. The differences between D. globiccps and D. latipcs are pointed 

 out later on. 



Occurrence. Not taken by the "Ingolf". 



The Ilnd Amdrup Exped. captured 2 large females with marsupium at East Greenland near 

 Cape Dalton, Lat. 69°3o' N., 9— n fath. At East Iceland Dr. A. C. Johansen secured 1 spec, in Breiddals 

 Vik, 6 fath., mud and black sand; at the Faeroes 4 spec, have been gathered by Dr. Th. Mortensen in 

 Klaksvig, 10—15 fath. 



Distribution. It has been taken at 10 places in the eastern and southern Kattegat, 12V2 — 44 

 fath. (H. J. Hansen), in the northern part of the Sound, 12 — 22 fath. (W. Bjork), and at 3 places in the 

 Skager Rak, 6 to 15 miles from Jutland, 70 to 125 fath. (Meinert). It has not yet been discovered 

 at Norway or Great Britain. 



68. Desmosoma latipes n. sp. 

 (PL X, figs. 5 a— 5 f). 



Female. Allied to D. globiccps. — First thoracic segment (fig. 5 a) not half as long as the 

 second; the epimera scarcely produced, blunt or rounded. Second segment large; the epimera anteriorly 

 rounded. Fourth segment a little longer than the first, but only a little more than half as long as 

 the second. Fifth segment in the adult female somewhat narrower in front than behind, with the 

 lateral margins gradually somewhat diverging backwards; in the younger female (fig. 5 a) the anterior 

 part of the lateral margins converges extremely forwards. 



First pair of legs (fig. 5 b) with the distal half nearly more slender than in D. globiccps; fifth 

 joint with two thin and somewhat short setae on the lower margin. — Second pair (figs. 5 c and 5 d) 

 extremely robust and conspicuously stronger than in E. globiccps; their fifth joint not quite twice as 

 long as deep, with seven spines along the lower margin; the five distal spines are extremely thick 

 excepting their short, setiform terminal part; furthermore, the two distal spines are extremely long, 

 and the spines gradually decrease much in length from the penultimate to the most proximal; finally 



