92 MEMOIES OF THE NATIONAL ACADEMY OP SCIENCES. 



Andania pectinata G. O. Sars. "No distinct eyes." North Atlantic. 



Stegoplax longirostris G. 0. Sars. <! No eyes." North Atlantic, 300 fathoms. 



Bruzelia luberculata G. O. Sars. "No distinct eyes." North Atlantic, 100 to 300 fathoms. 



Podocerus tubermlatus Hoek. North Atlantic, 67 fathoms. 



[Bathyporeiapilosa an&pelagica are one species, according to Boeck (Scancl. og Arkt. Ampliip.), 

 which is figured and described as having eyes.] 



Niphargus fontanus Spence-Bate. England, in wells. 

 Niphargus Tcoohianus sp. Bate. England, in wells. 

 Crangonyx subterraneous sp. Bate. England, in wells. 



Note. — A blind species of the family Hyperiidse inhabits deep water in China Sea. W.-Suhm, 

 Zeits. wissen. Zool., xxvi, iv, 1876. 



Order Isopoda. 



APSETJDIDJE. 



Apseudes spinosus (M. Sars). 180 to 729 fathoms. " No vestige of eyes " (Norman and Stehbins). 

 uncidigitatus Norm, and Stebb. Mediterranean. " No appearance of eyes." 

 dbtusifrons Norm, and Stebb. Straits of Gibraltar, 128 fathoms (Norman and Stehbins). 

 lunarifrons Norm, and Stebb. Off coast of Algeria, 51 to 510 fathoms (Norman and Stehbins). 

 simplicirostris Norm, and Stebb. 100 miles south of Eockall, 1,263 fathoms (Norman and Stebbins). 

 grossimanus Norm. Off Portugal, 740 fathoms (Norman and Stebbins). 



gracilis Norm, and Stebb. North Atlantic and Davis Strait, 1,450 to 1,785 fathoms (Norman and 

 Stebbins). 

 Sphyrapus malleolus Norm, and Stebb. North Atlantic, 109 to 1,450 fathoms (Norman and Stebbins). 

 tudes Norm, and Stebb. South of Rockall, 420 fathoms (Norman and Stebbins). 

 anomalus G. O. Sars. Coast of southern Norway, 40 to 150 fathoms (Sars). 



TANAID^E. 



Alcetanais serratospinosus Norm, and Stebb. 1,360 to 1,450 fathoms (Norman and Stebbins). 

 hastiger Norm, and Stebb. 1,750 fathoms (Norman and Stebbins). 

 Iwvispinosus Norm, and Stebb. Off Valencia, 370 fathoms (Norman and Stebbins). 

 Strongylura arctopliylax Norm, and Stebb. Midway between Ireland and Rockall, 1,380 fathoms (Norman and 



Stebbins). 

 Tancella unguicillata Norm, and Stebb. English Channel, 96 fathoms (Norman and Stebbins). 



The following genera of Apseudidse and Tanaidse are eyeless: 



Sphyrapus G. O. Sars. Several species. Atlantic, 40 to 1,500 fathoms. 



Typhlapseudes Beddard. One species. Atlantic, 450 fathoms. 



Leiopus Beddard. One species. Atlantic, 1,000 fathoms. 



Neotanais Beddard. One species. Atlantic, 1,200 to 1,900 fathoms. 



Anarthura G. O. Sars. One species. Atlantic. 



Strongylura G. O. Sars. Two species. North Atlantic, deep water. 



Gryptocope G. O. Sars. Two species. North Atlantic. 



Haplocope G. O. Sars. One species. North Atlantic. 



Psmdoianais G. O. Sars. Four species. North Atlantic and Mediterranean. 



Typhlotanais G. O. Sars. Many species. Atlantic, Pacific, and Southern oceans, shallow to 2,050 fathoms. 



Leptognatha G. O. Sars. Many species. North Atlantic and Southern oceans, shallow water. 



Tanmlla Norman and Stebbing. One species. North Atlantic, 96 fathoms. 



Alaotanais Norman and Stebbing. One species. North Atlantic, 370 to 1,750 fathoms. 



In several other genera of these families some of the species are eyeless and others furnished 

 with eyes. 



[I can find no reference to Apseudes caeca in Beddard's Challenger Isopoda.] 



MUNNID^E. 



The following genera of Munnidse are eyeless : 



Pleurogonium G. O. Sars. Several species. North Atlantic and Southern oceans. 

 Dendrotion G. O. Sars. One species. North Atlantic, 100 fathoms. 

 Nannoniscus G. O. Sars. Two species. North Atlantic, 100 to 1,163 fathoms. 

 Macrostylis G. O. Sars. Two species. North Atlantic and Pacific, 100 to 2,000 fathoms. 

 Ischnosoma G. O. Sars. Several species. Atlantic and Pacific, 700 to 2,000 fathoms. 



