CRUSTACEA MALACOSTRACA. m 



25. Pseudomma truncatum S. I. Smith. 



1879. Pseudomma truncatum S. I. Smith, Trans. Conn. Acad. Vol. V, p. 99, PI. XII, figs. 3, 4. 

 ! 1879. G. O. Sars, Mon. Norges Mysider, III, p. 102, PL XL. 



Occurrence. Was once taken by the "Ingolf". 



North of Iceland: St. 12S: 66° 50' N. L., 20 02' W. L., 194 fm., temp. cr6°; 1 spec. 



It is also noted from Karajok Fjord, West Greenland, at 70 20' N. L., 102 fan. (Vanhoffen). 



Distribution. The species was founded on specimens taken in the Gulf of St. Lawrence in 

 depths from 45 to 70 fan.; Sars gives it from Varanger Fjord, 150 fm., from a point south of Spitz- 

 bergen, 267 fm., temp, h- ri° and from another west of Spitzbergen, 125 fm., temp. 1-9°. It is further 

 known from the Kara Sea, 51 fan. (Hansen), and is noted from Behring Sea (Richters), but though the 

 last-named locality is not improbable, the correctness ought to be confirmed. 



26. Pseudomma Theeli Ohlin. 



1901. Pseudomma Theeli A. Ohlin, Bih. Kgl. Sv. Vet-Akad. Haudl., B. 27, Afd. IV, no. 8, p. 78, Fig. 5. 

 Occurrence. This species is as yet only known from the two type-specimens taken at "East 

 Greenland, Franz Joseph Fjord, entrance of Musk-ox Fjord, depth 220 m." (116 fm.). 



27. Pseudomma parvum Vanhoffen. 



PI. V, fig. 4 a— 4 h. 



1897. Pseudomma parvum E. Vanhoffen, Drygalski's Gronland-Expedition, p. 199. 

 ! 1907. — Zool. Jahrb., Abth. fur Systematik, B. XXV, p. 508, Taf. 20, Fig. 1—3. 



Description. This description 1 is founded on 2 specimens, a fine, egg-carrying female and 

 a somewhat mutilated male, both most kindly placed at my disposal by the founder of the species. 



Anterior margin of eye-plate taken as a whole (fig. 4 a) is somewhat strongly convex, but in 

 the centre there is a fairly slight inbending, angular at its base though a median narrow cleft is 

 absent; further, the margin is somewhat concave for a considerable distance about half way between 

 the median line and the lateral corner, whilst its lateral portion is very convex. The upper surface 

 and anterior margin of the eye-plate under a magnification of quite 100 times show a number of 

 small, conical protuberances and a quantity of fine hairs of the same length, further a somewhat 

 larger tubercle directed forwards and upwards near the anterior margin a little distance from the 

 median line. The front margin of the carapace under the lateral corner of the eye-plate is regularly 

 and moderately strongly serrulated for a part of its length. — The autennal squama (fig. 4 b) is almost 

 as in P. Tliccli, a little over five times as long as broad; almost two-thirds of the terminal margin is 

 somewhat convex whilst the remaining third is the base for the process at the outer margin, which 

 is specially large, both broad and thick at the root and extending far out over the distal edge; the 

 setae along the inner margin are extremely long, the longest indeed being but little shorter than the 



1 My description and drawings had been made a long time before Dr. Vanhoffen published his more detailed account 

 of this species. 



