52 



BULLETIN 201, UNITED' STATES NATIONAL MUSEUM 



BOREOMYSIS CALIFORNICA Ortmann 



Figures 9, 10 



Boreompsis calif ornlca Ortmann, 1894, p. 106, figs. 4-14. 

 Boreomysis media Hansen, 1912, p. 190, pi. 1, figs. 2a-2b. 



Description. — The rostral plate (fig. 9, o) is considerably produced 

 and has rather prominent shoulders. In lateral view (fig. 9, a) it is 

 somewhat upturned. The front margin of the plate is produced in 

 the median line into an acutely pointed rostrum, which, however, does 

 not extend in front of the eyes. 



Figure 9. — Boreomysis calif ornica Ortmann: a, Lateral view of anterior end to show eye 

 and rostral plate, X 18; b, dorsal view of anterior end to show eye, rostral plate, anten- 

 nules, antennae, and scale, X 18. 



The eyes (figs. 9, a-o; 10, a) are small to moderate in size, with the 

 cornea scarcely as broad as the distal end of the eye stalk and the 

 pigment light golden-brown. The eye stalk has a well-marked tri- 

 angular process on the upper surface, which is very prominent in 

 lateral view. 



