34 G. 0. SAKS. PRELIMINARY NOTICES ON THE SCHIZOPOBA. 



Fam. 4. 



M y s i d æ. 

 Gen. 1. Petalophthalmus. WilL Suhm 1879. 



Transact. Linn. Soc. Lond. Vol. 1. 2 ser. 



40. Petalophthalmus armiger Will. Suhm. 



Petalophthalmus armiger, Willem. Suhm, Transact. Linn. Soc. Lond. 2. sev. Vol. 

 1. pg. 40. pl. VIII. 



Eemarks. I have not myself been enabled to examine this 

 remarkable form, which is wanting in the collection sent to me. 

 But the description of Willem. Suhm seems to warrant its claim 

 to be regarded as the type of a distinct genus, although nearly 

 allied to Boreomysis. 1 



Gen. 2. Boreomysis. G. 0. Sars 1869. 



"Undersøgelser over Christianiafjordens Dybvandsfauna." 



41. Boreomysis scyphops. G. 0. Sars. 



Boreomysis sct/phops, G. 0. Sars, Crustacea & Pycnogonida nova Expeditionis 

 Norvegicæ No. 3. 



Petalophthalmus inermis Willem. Suhm M. S. 



Bob. Antarctic ocean (Stat. 147, 157, 158), depth from 1600 

 to 1950 fms. 



RemarJcs. I do not find any essential diiference between the 

 'Challenger' specimens of this gigantic deep-sea Myside and the 

 specimens procured during the Norwegian Expedition West of 

 Spitsbergen. The occurence of this form in the great deeps of 

 both the arctic and antarctic oceans is very interesting. 



Since the above was printed, Prof. Murray has torwarded me a ruther well 

 preserved male specimen, which will euable me to include also this interesting 

 genus in my Report. 



