90 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



The first three pairs of legs are prehensile. The propodus is armed 

 with four spines, the carpus with three in the first legs, with two in 

 the second and third pairs; the merus with six spines; and the ischium 

 with three or four; the outer distal end of the merus is furnished with 

 one long spine in the first pair of legs. The last four pairs of legs are 

 also furnished with spines. 



CIROLANA LINGUIFRONS Richardson. 



823; 



Cirolana linguifrons RICHARDSON, Proc. U. S. Nat. Mus., XXI, 1899, p 

 Ann. Mag. Nat. Hist. (7), IV, 1899, pp. 163-164. 



Locality. Monterey Bay, California. 

 Dug at mean tide mark from sandy shore. 



Color, yellow, marked with scattered black dots. Body elongate- 

 ovate, about five times longer than broad, greatly convex. 



Head with the frontal margin produced in a long, 

 straight process, rounded anteriorly and somewhat 

 dilated. Eyes large, distinct. First 

 pair of antennae with the articles of 

 the peduncle large; flagellum of fif- 

 teen short joints extends to the pos- 

 terior margin of the third thoracic 

 segment. Second pair of antennae, 

 with a flagellum of thirteen long 

 articles, extend to the posterior mar- 

 gin of the fifth thoracic segment. 



The first three segments of the 

 thorax are short; the other four seg- 

 ments are long. The epimera of the 

 second, third, and fourth segments 

 ar not produced at the apex; those of the fifth, sixth, and seventh 

 but slight!}' produced. 



All the abdominal segments conspicuous, the first five being of equal 

 length. The fifth segment is as wide as the fourth, and the lateral 

 parts are not covered by the post-lateral angles of the preceding seg- 

 ment. The terminal segment is rounded posterior^, faintly crenulate 

 and fringed with long hairs. The base of this segment is raised above 

 the other portion and has a well-defined edge with two points extend- 

 ing backward, one on either side of the median line. The uropoda 

 extend beyond the tip of the abdomen; the inner branch is obliquely 

 truncate; the outer branch is more rounded; both branches are fringed 

 with long hairs. 



The prehensile legs are short; the ambulatory legs are long and 

 slender. The legs increase gradually in length from the first to the 

 seventh pair. 



FIG. 71. CIROLANA LIN- 

 GUIFRONS. x I3i. a, 

 HEAD. 6, TERMINAL 



SEGMENT. 



FIG. 72. CIRO- 

 LANA LINGUI- 

 FRONS. MAX- 

 ILLIPED. X 51|. 



