Vol. xxiii] ENTOMOLOGICAL NEWS. 65 



Abdomen elongate oval, broadest at third and fourth segments; the 

 segments of nearly equal length, a stout bristle at the posterior angle 

 of each, each segment except the first with a long stout hair in addition 

 to bristle, a single transverse row of weak hairs on dorsum of each 

 segment except last two; first to sixth segments with a transverse nar- 

 row brown dorsal blotch, first to seventh with an irregular, darker 

 marginal blotch, seventh segment with faint dorsal blotch, eighth with 

 four small blotches ; last segment with rows of minute hairs ; genitalia 

 not visible ; except for above blotches abdomen is colorless. 



Menopon dissimile Kellogg. 



One male from Pyrrholoxla vennsta peninsulae, San Jose del 

 Cabo. 



Menopon infrequens Kellogg. 



Three males from Larits heermani, San Geronimo Island. 



Menopon paululum Kellogg and Chapman. 



One immature male from Oceanodrama tnacrodactyla, 

 Guadeloupe Island. 



Menopon singularis Kellogg. 

 Two males from Phaethon aethereus, Socorro Island. 



Menopon becki Kellogg. 

 One male from Phaethon aethereus, Socorro Island. 



Physostomum diffusum Kellogg. 

 One specimen from Ammodramus sanctorum, San Benito 



Island. 



Physostomum subhastatum Durrant. 



Three specimens from Pipilio albigitla, San Jose del Cabo. 



Physostomum fasciatus Piaget var. arcuatus nov. var. 

 Two specimens from Tyrannus vocifcrus, Cerros Island. 

 The type of the species, taken from Lams capistratns, at the 

 Zoological Garden in Amsterdam, was undoubtedly a straggler. 

 Our specimens differ from the species figure and description in 

 having two hairs directly anterior to the eye, the posterior 

 angles of the head with two hairs, the sides of the prothorax 

 with three long hairs, and the sides of the metathorax more 

 arcuate for the posterior two thirds. The signature is piceous, 

 and the front more convex. 



