NO. ii7n 



TSOT'ODS OF TTIK VAriFTC COAST— RICHARDSON. 



825 



teriniiuil segment. In /^\ ry/mn/r/ii the posterior marjj^in is doiitieuliito. 

 In our species it is denticiiliite, and also bears four s[)iues. 



Family IV. CORALLANIDJC. 



5. CORALLANA Dana. 

 7. CORALLANA TRUNCATA, new species. 



Body elongate, about three and a half times longer than wide; color, 

 yellow. 



Head witli a small median point. Eyes large, situated but a little dis- 

 tance apart. First pair of antennas with a tlagellum of 

 about nine articles, extend to the antcro- lateral angle 

 of the first thoracic segment. Second pair of antenna', 

 broken in specimen. 



First segment of the thorax is as long as the head, 

 and about one and a half times longer than any of the 

 other segments. Epimera of the second and third seg- 

 ments narrow; those of the remaining segments very 

 broad. 



The lirst abdominal segment is almost entirely covered 

 by the last thora(;ic segment. The second, third, and 

 fourth segments are tuberculated on their posterior 

 margins. The fifth segment is also tuberculated, the 

 tubercles on either side of the media,n line of tuber- 

 cles being larger and more conspicuous. At the base 

 of the terminal segment are four tubercles, the two 

 center ones being the larger. The terminal segment is 

 subtriaiigular with truncate apex. The posterior nuir- 

 gin is armed with spines. The inner branch of the 

 uropoda is truncate posteriorly, and armed with spines; 

 it is about twice as broad as the outer bran(;h, which is 

 lanceolate in shape. 



There is but one specimen, from Oatalina Island, California; collected 

 by Dr. J. G. Cooi)er. 



Type.— 1^0. 2li5(;(;, U.S.N".M. 



Family V. yl^^dlDyF. 



Kio. 4 C'ouAr,- 



I.ANA 'I' 11 i; N - 



• ATA. ■ i;ij. 



a, IIICAI); 6, All- 

 DOM EN AND 

 LAST TirOIlACIC 

 KICOMENT. 



ANALYTKJAL KKY TO (IKNKRA OK .IXUD^:. 



a. Body rather (Muupaot. Superior aiiioiiiin! nhort, with (iiHt two |»e(liiii(iilar jointH 

 more or less e.^cpaiuled. KpLstoiiie larj^c, lin^iiironii, piojcsct.iiiff bitween tiie 

 basos of inferior antonine. Maxiliipeds with palp coiiipoHcul of live .jointH. 

 Anterior pairs of Icj^s witli piopodiiHKiiiiple, eylinchical, notexpand('<i,dactyliiH 

 :ibiiiptly curved in middle. i'Yoiit Heparatinj^ the whole or a f;rea,t juirt ol' the 

 (irat article of Wio (irst pair of aiitenna-. Fhij^dlliira of (irat pair of antennae 

 composed of many artielcH. Abdomen compact (>. yEtja. 



