i56 



CRUSTACEA MALACOSTRACA. III. 



MunnopsiS M. Sars. 



Diagnosis. Body with the anterior section of thoracic segments and especially third segment 

 much broader than the three posterior segments and abdomen. — First antennular joint with the distal 

 inner part considerably protruding beyond the insertion of next joint as a broad triangle with the end 

 obtuse. Antennae mainly as in Paramunnopsis ; squama low. moderately distinct. Mandibles reduced; 

 the incisive part terminates in a couple of obtuse teeth, the setae are few and quite short, the molar 

 process wanting, the palp well developed. - - The three posterior thoracic segments immovably fused 

 with each other and with abdomen; fifth segment not overlapping the fourth. Natatory legs with fifth 

 joint about three times as long as broad, not broader than the sixth, and the posterior margin very 

 moderately convex. -- The median lamella of the male pleopods moderately broad, feebly broader beyond 

 the middle and then tapering considerably to the end, which terminates in two pairs of small lobes; 

 second pair of pleopods free to the base, and each eopulatory organ has first joint rather short and 

 thick, second joint produced in a filament of excessive length. — Uropods moderately long. 



Remarks. In this diagnosis some characters not found in earlier descriptions are pointed out 

 mainly in order to separate Munnopsis from the other genera of the group. Of the species hitherto 

 referred to Munnopsis only M. typica seems to remain in it. 



103. Munnopsis typica M. Sars. 

 1861. Munnopsis typica M. Sars, Forh. Yid. Selsk. Christiania for i860, p. 84. 

 ! 1868. M. Sars, Bidrag til Kundskab 0111 Christianiafjordens Fauna, in Nyt Magaz. 



for Naturv. Vol. XV, p. 310; Pis. VI— VII. 

 1887. — H. J. Hansen, Dijmphna-Togtets zool.-bot. Udbytte, p. 196; PL XX, figs. 2 — 2 e. 



! 1897. — G. O. Sars, Account, II, p. 133; Pis. 57 — 58. 



1905. — Richardson, Monograph, p. 486; figs. 544 — 546. 



To the fine paper of M. Sars (1868) I added in 1887 (1886) some particulars, chiefly of morpho- 

 logical significance, and these two treatises together with the representation of G. O. Sars and the 

 diagnosis above of the genus give a full account of this interesting form. — As to size it may be said 

 that according to G. O. Sars the length of the adult male is n mm.; H. Richardson recorded 13 mm., 

 but Ohlin had from East Greenland a female 15-5 mm. and a male measuring 18 mm., while one of 

 my largest specimens, a female without marsupium from the "Ingolf" Stat. 138, is 177 mm. long. 



Females from the Kara Sea I found infested with Spharonella Munnopsidis H.J.H. (1897), and 

 on a couple of females taken by the Ilnd Amdrup-Exped. at East Greenland I found in the marsupium 

 a Sphceronella, probably the same species, but not yet investigated. 

 Occurrence. Taken by the "Ingolf" at eight stations. 



Davis Strait: Stat. 32: Eat. 66°35' N., Eong. 56°38' W., 318 fath., temp. 3-9°; ab. 20 spec. 

 Stat. 31: Lat 66°54' N., Long. 55°34' W., 88 fath., temp. i-6°; 1 spec. 

 Stat. 35: Lat. 65°i6' N., Long. 55°o5' W., 362 fath., temp. 3-6°; ab. 10 spec. 

 vStat. 28: Lat. 65°i4' N., Long. 55°42' W., 420 fath., temp. 3-5°; 1 spec. 

 Stat. 27: Lat. 64 54' N., Long. 55°io' W., 393 fath., temp. 3-8°; 5 spec. 



