88 



VERNON L. KELLOGG. 



equal width (in widest places) ; antennae differing in the sexes, 

 that of male having an appendage on third segment ; abdomen of 

 male narrower than in female, parallel-sided, and with segments 

 6-8 each about twice as long as each of preceding segments ; 

 head with a broad, thin, transvenal, membranous clypeal flap 

 projecting far on each side of forehead in an angulated and folded 

 process ; metathorax with postero-lateral angles conspicuously 



FIG. i. Philoceanus becki, male. FIG. 2.) Philoceanus becki, female. 

 (Length, 1.6 mm. (Length, 1.5 mm.) 



produced into tapering, blunt-pointed, backward-projecting proc- 

 esses. 



PHILOCEANUS BECKI sp. nov. (Figs, i and 2.) 



Five specimens (one male, three females, one immature) taken 

 from Procellaria tethys (one specimen) Wenman Id. of the Gala- 

 pagos group, summer of 1901, by Mr. Rollo Beck. 



Description of Male. Body, length 1.6 mm., width .27 mm. (abdomen), 

 pale yellowish brown, with darker to blackish-brown marginal and trans- 

 verse bands which cover so much of the surface as to give the posterior 

 half of the body a general dark brown coloration. 



Head, length .4 mm. width .3 mm., large in comparison with rest of 

 body, wider than any other part of body, and conspicuously large, /. e. , 

 wider and longer than the thorax ; clypeal front broad, flatly convex and 

 with distinct thin uncolored rounding margin ; clypeal sutures distinct, 

 broad, and with two conspicuous hairs at the marginal termination ; these 

 clypeal sutures form a V-shaped figure enclosing the distinct clypeal signa- 

 ture between the anterior prongs ; the clypeus bears a conspicuous mem- 



