NO. 2123. CRUSTACEA COLLECTED IN COLOMBIA— PEABSE. 



547 



on either side; lateral angles prominent. Eyes small, with 14 facets. 

 Second antenna robust, with 3-segmented flagellum; covered with 

 many minute setae; ultimate segment nearly as long as the two pre- 

 ceding together, terminal seta very long. First maxilla with two 

 plumose processes (fig. 7.) 



First segment of thorax not twice as long as head, with two 

 transverse rows of large tubercles; longer than other segments, each 

 of which has a row of tubercles along its posterior margin. Coxopo- 

 dites not distinct. First two abdominal segments without epimera; 

 epimera of succeeding segments continuing contour of body. Ter- 

 minal segment nearly twice as broad as long, shghtly concave on 

 posterolateral margins; tip rounded. Uropoda with basal segments 

 square but deeply notched on posterior border near median angle; 

 external rami longer than basal segment, inner rami extending to 

 middle of outer. 



Fig. 7.— Sphaeboniscus gaigei. a, antenna; m', first maxilla; m^, second maxilla; mp, maxilliped 



U, UEOPOD. 



Color, reddish-brown with irregular bilaterally symmetrical mark- 

 ings of yellowish-white. 



Seven specimens were taken in the highest timber on San Lorenzo, 

 at an altitude of about 7,800 feet, in the ground under leaves, by Mr. 

 F. M. Gaige, on July 23. 



SPHAERONISCUS COLOMBIENSIS, new species. 



Holotype. — Cat. No. 45957, Museum of Zoology, University of 

 Michigan. Paratype. — Cat. No. 47947, U.S.N.M. Collected under 

 leaves and logs in forest south of Cincinnati Coffee Plantation, Sierra 

 Nevada de Santa Marta, Colombia, 4,800 feet, by A. S. Pearse, July 

 12, 1913. Orig. No. 82. 



Body oblong, very convex, contractile into a ball; length 16 mm., 

 width 5.8 mm. Dorsal surface marked with very minute pearly 

 granules arranged in irregular anastomosing lines. Head set in first 

 thoracic segment; front nearly straight; epistoma rhomboidal. 



