ISOPODS OF W)RTH AMERICA. ()7l 



iiient. The outer ))raiieh is In'oad, Hattened, aiid round; the inner 

 branch is smaller and narrower, and posteriorly rounded. 



There are ))ut six pairs of leo-s, those of the seventh thoraeie seg- 

 ment being' wanting. 



A few specimens were collected by Prof. A. E. Verrill and party atthe 

 Bermudas in IS98, and at Castle Island in l!»ol. under stones, in dry 

 places. 



Type in the IVabod}' Museum, Vale L'niversily. Cat. }\o. 8224. 



Family XXVII. SCYPIIACIDJ:. 



Head without median or antcro-iatei-al lobes. Front not margined, 

 but contimious w ith the epistome. Second pair of antenna' with llagel- 

 lum composed of four articles. First maxilhe with the innei- lobe 

 furnished with two plumose seta'; outer lo])e fui'nished with teeth. 

 Second maxilhe furnished with hairs. Mandibles without molar 

 process. Maxilliped with masticatory lobe acutely produced; palp 

 elongate, much longer than masticatory lobe, with articles large and 

 not distinctly detined. 



Abdomen not al)ruptly narrower than thorax. 



Uropoda extending beyond the tip of the a])domen; inner branch 

 inserted at the upper inner angle of the l)asal artich^ 



122. Genus SCYPHACELLA Smith. 



Outer lobe of tirst maxilhe fui'nished along the distal half of the 

 inner margin with recurved spines. 



Inner lobe furnished with two widel}' separate plumose processes, 

 one at the tip and the other on the inner margin. 



Second maxilhe furnished with hairs at the ti}). 



Both fii-st and second maxilhe long and slender. 



P^pignath of maxillipeds long and narrow, acutely produced at the tip. 



Eyes large, composed of many ocelli. 



Abdomen not narrowei- than thorax. 



Uropoda exposed, both l)raiiches styliform. 



SCYPHACELLA ARENICOLA Smith. 



Scuplmcella arenicola Smith, Report U. S. ('(nuinisi^ioner of Fish and Fisheries, 

 1878, Pt. 1, p. 567 (274). — HAUciEu witli Vrrrill, Report l^ S. Commis- 

 sioner of Fish and Fisheries, 1878, l*t. I, p. 887 (48). — H.xrger, Proc. IT. 8. 

 Nat. Mus., II, 1879, p. 157; Report U. S. Connnissioner of Fish and Fish- 

 eries, 1880, Pt. 6, pp. 307-808, i)l. i; fi<j. 2. 



Tric.Itoni.'<cus arenicola Budde-Luxd, Crust. Isop. Terrestria, 1885, p. 249. 



SriiphaceUa arenicola \J^T)ER\yooiy, BuU. 111. State Lab. Nat. Hist., II, 1886, ]>. 

 863. — Richardson, American Naturalist, XXXIV, 1900, p. 807; Prot', U. S. 

 Nat. Mus., XXIII, 1901, p. 576. 



