122 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



of the first thoracic segment. The second pair of antenna have the 

 first two articles short, the second one a little longer than the first; 

 the third is as long as the first two taken together; the fourth is 

 nearh' one and a half times longer than the third; the fifth is one and 



a half times longer than the fourth. The 

 flagellumis composed of thirtj^-six articles. 

 The second antenna? extend to the pos- 

 terior margin of the fifth thoracic seg- 

 ment. The maxilliped is composed of 

 seven articles. The mandil)le has a palp 

 of three articles. The frontal lamina is 

 conspicuous on the ventral side, is narrow 

 and compressed laterally, and elevated; it 

 is triangular in shape, with the acute apex 

 of the anterior end extending forward; it 

 is also about twice as long as broad. 



The first, fifth, and sixth segments of 

 the thorax are longer than an}^ of the 

 others. The epimera are distinct on all the 

 segments with the exception of the first. 

 They are broad, with the post-lateral 

 angles acutely produced in the last four 

 beyond the posterior margins of the segments. A carina crosses 

 obliquely all the epimera. 



The segments of the abdomen are all distinct. The sixth or ter- 

 minal segment is rounded posteriorl3\ The lU'opoda are a little longer 



Fig. 104.a — CiROLANIDES TEXENSIS. 

 X 4i. 



A 



Fig. 105.— CiROLANIDES texensis. a, Maxilliped. x 27j. b, First maxilla, x 27^. c, Secoxd 

 MAXILLA. X 27y. d, Mandible, x 27^. e, Frontal lamina, x 51f. 



than the terminal abdominal segment. The inner branch is a little 

 longer than the outer branch and somewhat wider. Both are similar 

 in shape, bemg wider anteriorly than posteriorly, the narrow extremity 

 being truncate. The peduncle is as long as the outer branch, a little 

 more than half the length of the terminal abdominal segment, and is 



« Figs. 104 and 106 are by the courtesy of Dr J. E. Benedict. 



