CRUSTACEA MALACOSTRACA. III. 51 



lateral pair of nearly cylindrical protuberances about as long as, or a little longer than, the breadth of 

 the corresponding segment, and bearing the coxae on their ends; the coxa itself is nearly as broad as 

 the protuberance, but short and at the end produced in a slender process; the processes of fifth coxae 

 are shorter than the breadth of the coxae, those of sixth pair are distinctly longer than, or even almost 

 twice as long as, the preceding pair, and the processes of seventh pair of coxae are still a little longer 

 and thinner; the processes have the end cut off and a long terminal seta, while the surface of the 

 three segments has no long setse, but the protuberances from fifth and sixth segments have a single 

 long dorsal seta. The processes are without granules. 



The abdomen of both sexes has been well figured by Sars. The four strong, curved spines on 

 each lower margin and the shape of the opercula are characteristic. I found it impossible to point 

 out a separate basal segment of the abdomen. 



Length of the female with marsupium 3-5111111., of the female without marsupium 3-8 mm.; a 

 probably adult, very mutilated male has been about 2-8 mm. 



Remarks. Though my description of the thoracic segments with their protuberances and the 

 processes differs materially from the representation given by Sars, I am sure that my specimens belong 

 to his species, as the armature of the abdomen, the median plate of the male operculum, and an uropod 

 preserved in a female agree completely with his figures. In the description of, and remarks on, />. 

 paradoxum the differences between the two species are pointed out. 



Occurrence. Taken by the "Ingolf" at a single station. 



South-West of Iceland: Stat. 78: Lat. 6o°37' N., Long. 27°52' W., 799 fath.. temp. 4-5°; 1 spec, (d 1 ) 



Furthermore the "Thor" secured it in 1904 at the following place. 



South-West of the Faeroes: Lat. 6i°i5' N., Long. 9=35' W., 463—515 fath.; 1 spec. (?) 



Distribution. The Copenhagen Museum possesses two females gathered by the "Thor" (Dr. 

 Joh. Schmidt) in the North Sea at Lat. 58°32' N., Long. 4°i8' E., 149 fath., thus not very far from 

 South-Norway. Sars has recorded it from Hardanger Fjord, 150 fath. 



32. Dendrotion paradoxum u. sp. 

 (PI. IV, figs. 3 a-3 e). 



Description. The material comprises a number of not full-grown specimens — their anterior 

 thoracic segments consequently less expanded than in ovigerous females — and a single, perhaps adult, 

 male; all specimens have lost the major part of their appendages. This species is allied to D. spi- 

 nosum, but it looks still more aberrant. 



The processes of the head are as long as, or shorter than, those in my specimens of D. spinosum. 

 First joint of the antennulae is extremely long; in a single specimen with an antennula and an antenna 

 well preserved (fig. 3 c) this joint is more than two-thirds as long as sixth peduncular joint of the 

 antennae; the flagellum is 8-jointed in this specimen. — Antennae with second joint longer than in D. 

 spinosum, in the specimen mentioned half as long as the fifth joint, which is a little shorter than the 

 sixth; flagellum scarcely longer than sixth peduncular joint, 8-joiuted. 



The four anterior thoracic segments (fig. 3 a) with the lateral protuberances a little longer than 

 in D. spinosum, but their terminal processes are much longer than in that species, those of second and 



7* 



