DESCRIPTION OF A NEW SPECIES OF ANILOCRA FROM 

 THE ATLANTIC COAST OF NORTH AMERICA. 



By Harriet Richardson, 



Collaborator, Division of Marine Invertebrates, U. S. National Museum. 



Through the Biological Survey of the U. S. Department of Agricul- 

 ture, three specimens of a new species of Anilocra were sent to the U. S. 

 National Museum by Mr. W. J. Hoxie, of the Natural History Society 

 of Savannah, Ga. This is the third species of the genus known from 

 the Atlantic coast of North America, the two species previously 

 described being Anilocra laticauda Milne Edwards and A. plebeia 

 Schicedte and Meinert. 



ANILOCRA ACUTA, new species. 



Body 34 mm. long and 12 mm. wide. Surface smooth. 



Color yellow, marked with numerous brown dots, which in the 

 middle of the dorsal surface of the last three segments of the thorax 

 almost merge into a dark brown background, leaving a few wavy 

 light areas on either side of the median line. 



The head is as long as wide, 4 mm. by 4 mm. The lateral margins 

 converge slightly to a widely rounded anterior extremity. The eyes 

 are large (1 mm. wide and 2 mm. long), distinct and composite, and 

 are placed in the post-lateral angles. The antenna? of the first pair 

 are composed of eight articles and extend to the middle of the eye 

 on the lateral margin. The antenna? of the second pair are composed 

 of ten articles and reach the posterior margin of the head. 



The first segment of the thorax is the longest, 3 mm.; the five fol- 

 lowing segments are subequal, each about 2 mm. in length; the 

 seventh segment is the shortest, 1J mm. The thorax widens grad- 

 ually from the first segment, which is 7 mm. wide, to the sixth, 

 which is 12 mm. wide. Epimera are present on all the segments 

 with the exception of the first; those of the second and third seg- 

 ments are narrow, elongate, and posteriorly rounded; the last four 



Proceedings U. S. National Museum, Vol. 39— No. 1779. 



137 



