462 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



shorter than the angulations. The outer ramus is almost as long as 

 the inner (37: 39). 



"Color, 3 T ellowish white. 



"Length, 21.5 mm." BOVALLIUS. a 



IOLELLA TRIANGULATA (Richardson). 



lanthe triangulata RICHARDSON, Proc. U.- S. Nat. Mus., XXI, 1899, pp. 857-858; 

 Ann. Mag. Nat. Hist. (7), IV, 1899, pp. 323-324; American Naturalist, 

 XXXIV, 1900, p. 299. 



^Locality. Monterey Bay, California. 



Surface of body smooth; color yellow, marked with black dots. 



FIG. 517. lOLELLA TRIANGCLATA. X 13}. 



Head with rostrum in front equal to one-half the length of the head. 

 Anterior margin lobate between the rostrum and the lateral angula- 

 tions. The side of the head is produced in two angulations, the upper 

 one extending in an oblique direction and not reaching beyond the 

 anterior margin of the head. The first pair of antennae are not as long 



Bihang till K. Sv. Vet. Akad. Handl., XI, Xo. 15, 1886, p. 35. 



