ISOPODS OF NORTH AMERICA. 147 



The cl3^peus is veiy luirrow, partly concealed; the la))niiii is coii- 

 cealed. 



The last segment of the abdomen' is somewhat longer than in K. 

 <jiiadi'lcornii<^ being a fourth part wider than long, bare a])ove, and 

 ornamented on the dorsal surface near the base with two large tuber- 

 cles, separated a little; the sublateral impressions are deep; the apex 

 is furnished with two spines. 



The uropoda are wider than in E. quadrlcornis ; the branches Jire 

 ornamented with some long hairs and a few spines; the pediuicle 

 has the inner angle short, occupjnng about a third of the inner 

 branch. 



The color is dark black; the last segment of the abdomen and the 

 uropoda are brown, ornamented with branching black spots." 



Two specimens, both males, from Florida, in the collection of the 

 U. S. National Museum, 1 have referred to this species with some 

 hesitation, as they lack the two large tubercles at the base of the ter- 

 minal abdominal segment. They agree in other respects with Han- 

 sen's description of this species, but as Doctor Hansen's only speci- 

 men was a young specimen, very likely a female and taken in the 

 process of ecdysis, 1 would hesitate to make a new species until I had 

 more material. 



«The above description is adapted from the following descrii^tion of Hansen's?: 



Diagn. Feniina^ Cor. quadvxcorni^ subsimilis, tanien inipriniis differt characterilMis 

 sequentibus. Oculi leviter granulati. Antennularuni articailus basalis pedunculi 

 pronns visus valde dilatatus, supinus visus ita prominens, ut articuli basales anten- 

 naruni in rinia sat profunda inter antennulas et mandibulas positi sint. Segmentum 

 ultimuni caudif dorso prope l)a8in nodis duobus magnis, paulum distantibus ornata, 

 imi>ressionibus sublateralibus i)rofundis, apice spinis 2 instruoto. — Long. 4, 7 mm. 



Descr. Specimen singulum juvenile in mutatione cutis captum et ob eani causam 

 a speciebus ceteris habitu sat diversum vidi. Characteres prpecipui in diagnosi 

 exhibiti sunt; prjeterea characteres sequentes commemorare possum. 



Frons ante in processum trigonum sat magnum producta. 



Lamina frontalis paulo longior (luam latior, ad apicem versus nonnihil angustata, 

 apice rotundato, superticie excavata. 



Clypeus perangustatus, ex parte detectus, lal)runi obtectum. Antennuhe articulo 

 secundo pedunculi gracili, tiagello c. 7-articulato. 



Segmentum ultinunn cauda' nonnihil longius <|uam in speciebus pnccedentibus 

 (C qimdncornh) , (iiiarta parte latins quam longius, superne nudum. 



T^ropoda fere latiora (juam in speciebus ])rHcedenti])ns; rami setis nonnihil longi- 

 oribus et spinis paucioril)us ornati; scapus ungulo interiore brev'iore, circiter tertiam 

 partem rami interioris occupans. 



Color fusco-piceus; segmentum ultimum caudte et uropoda brunnea, maculis ramosis 

 nigris ornata. — Hansen, Vidensk. Selsk. Skr. (6), V, 1890, pp. 382-383. 



