Occasional Papers of the Museum of Zoology 5 



SiPHOXOPHORIDAE 



Siphonophora graciliceps, sp. nov. 



PL I, Figs. 3-^ 



Densely fulvous, brighter at the ends. 



Head narrow, conically narrowed forward and passing 

 gradually in'o the base of the beak. Beak slender, a little 

 curved, passing beyond distal end of the fifth antennal article. 

 (See PI. I. Fig. 3.) 



Collum in dorsal view with lateral edges convex, the ante- 

 rior corners oblique and the anterior margin mesally incurved. 

 (PI. I, Fig. 3.) 



Body not keeled. Uniformly densely hairy, the hairs 

 shorter than in pcarsci. 



Pleurites of anterior segments with cephalomesal corner 

 not produced ; anterior margin extended much farther for- 

 ward in its ectal portion than within, the margin evenly curv- 

 ing, without teeth; posterior margin convex. (See PI. i, Fig. 

 4.) Pleurite of posterior segments as shown in PI. i. Fig. 5. 



Number of segments, 67. 



Length, about 16 mm. ; width, .65 mm. 



Colombia: Fundacion ; Aug. 7, 1913 ; A. S. Pearse. One 

 female taken with the specimens of S. pcarsci. Holotype. 

 M. C. Z., 5.047. 



Siphonophora pearsei, sp. nov. 



PI. I. Figs. 6-8; PI. 2. Figs. 9-15 



Yellow to brown, excepting the anterior segments, which 

 are typically reddish or ferruginous, most of the body occa- 

 sionally being also tinged with the same color. Antennae yel- 



