NO. 1222. 



ISOPODS OF THE ATLANTIC COAST-RICHARDSON. 509 



IS. CALATHURA Norman and Stebbing. 



ANALYTICAL KEY TO THE SPECIES OF CALATHURA. 



Eves not cousnicuons. First pair of antenna with flagellum twelve jointe.1, not 



■ "^trer t an the length of the head. Second pair of antenna, with the fla- 



IXh V Ive jointea. First three se,nnents of thorax bounded laterally by 



ca r Termnal segment of body triangular, acute at apex margn. not 



cren^ate Superior or outer branc-h of uropoda oval in form, slightly den- 



S Inner branch acutely triangular. . 28. CaM^.a braucJu.ta Stnupson 



/ Fves conspicuous. First pair of antenna^, with flagelUun seventeen jomted, more 



• 'ZTZL as long as L length of the head. Second pai,- ot antenme with 



theflarel urn twentv-three jointed. First three segments ot thorax not bounded 



ateraUy bv carin.«: Terminal segment of body linguate, rounded posteriorly, 



w!rcrenulate margin. Superior or outer branch of the uropoda narrow, 



elongated, not dentated. Inner branch -nd^^.^^^^^^^^^^ ^.^^^^^^^,^^,^ ^^^^ ^^,^^,,, 



23. CALATHURA BRANCHIATA (Stimpson). 



Am. Jour. Sci., V, p. 101, 1873; VII, 18.4 pp^42, ^Y' f 2 P^^^;^ ^j;\ 

 Assoc, 1873, pp. 350, 357; Report U. S. F-h Com., IB^, P • 1, P- 511 

 (217).-Haroer, Report U. S. Fish Com. 1874, Ft. 1, p. 5.3 (279).-Smith 

 and Harger, Trans. Conn. Acad., Ill, 1874, p. 16. 

 ParanLra bran^Mata Haroer, Report U. S. Fish Com., 1880, pp. 402-40., pL 

 Parantnu^a ^^ _^^^^ ^^^^^^ Bidrag till Kannedomen om Malakostralsfaunan 



i Baffin Bay och Smith Sound, 1895, pp. 12, 13. ^ v , .. 



Para2n-a noLgica G. O. Sars, Bidrag till Kundskaben om Dyrehvet paa 



vore Havbanken, Vidensk. Selsk. Forhandl., 1872, p. 88. 

 Anthura arctica Heller, Crust. Pycnogoniden ^"-^ Tunicaten der k.k^ Osterr 

 Ungar. Nordpol Expedit., 1876, p. 14, pi. iv, figs, ^"l^--^- «■ ^f '' ^^^ 

 rom. descrip Crust, et Pycnogon. in exped. Norveg., 1876, in Archiv for 

 Mathemat. og Natiirvidenskab, p. 347. c< t 1 VTT1^^fi 



Calathara brcmcldata Norman and Stebbing, Trans. Lmn. Soc. Lond., XII, 1886, 

 Pt. 4, pp. 131-133, pi. XXVI, fig. 1. ^ n ^f ^ 



HahUat.-^^ of Fundy; Vineyard Sound; Cxeorges Bjmk; Gu t ot 



Maine; Casco Bay; Nova Scotia; ^-f -" ^^^^^^^f ^^^^^^^^^^^^ 

 Ground; between Middle Ground and Halitax; iO 8 N. lat. 74 ^U 

 W. long.; also off Norway, Scotland, Ireland, and between England 

 and Bay of Biscay. 



Depth.— \S) to 20(J fathoms. 



24. CALATHURA CRENULATA, new species. 



Fig. 1.— Head of Calathuka crenulata. 



Head half as long as first thoracic segment, frontal margin with 

 small median point and prominent lateral angles. Eyes large, ai.- 



