858 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



than the terminal segment, tbe outer branch somewhat shorter than the 

 inner one, and both fringed with hairs. 

 First pair of legs prehensile; remaining pairs simple. 



Fig. 29.— Ianthk triangclata. x 13J. 



Two specimens were collected by Mr. Heath at Monterey Bay, 

 California. 



Type.— No. 22582. U.S.N.M. 



69. lANTHE EROSTRATA, new species. 



Head two and a half times broader than long, with prominent antero- 

 lateral angulations. Lateral margins produced, entire. In place of the 

 rostrum, which marks all the other known species of this genus, there 

 is a small median point. The eyes are dorsally situated a short dis- 

 tance from the lateral edges. The first pair of anteunte are short, not 

 equal to the width of the head. The second pair are broken in the 

 specimen examined. 



The first thoracic segment is produced laterally in two angulations. 

 The second, third, and fourth segments are each produced in two angu- 



