598 CALIFORNIA ACADEMY OF SCIENCES. 



15. Tabanus punctifer O, Sack. San Jose del 

 Cabo, Baja California (Eisen). Two females. Length, 

 about 18 mm. The front, thorax and scutellum are de- 

 nuded in both, and in one the frontal callosity is in con- 

 sequence not distinguishable, being concolorous with 

 rest of front. The denuded thorax and scutellum are of 

 a brownish red. 



El Taste, Baja California (Eisen). September. Four 

 females and one male. San Ignacio, B. C, April, two 

 females (Haines). San Jose del Cabo (Eisen), Septem- 

 ber, one male. 



ASILIDyE. 



16. Stichopogon trifasciatus Say. San Jose del 

 Cabo, Baja California (Eisen). Four specimens. The 

 second, third, fifth and sixth abdominal segments are vel- 

 vety opaque black, except the narrow laterally widening 

 front borders which are covered with the silvery bloom 

 of the rest of the abdomen. 



17. Promachus n. sp.? 



San Jose del Cabo, Lower California (G. Eisen). One 

 female. It seems to most nearly approach P. magnus 

 Bellardi. But there are no distinct vitt« or spots on the 

 pollinose thorax, the wings are hyaline, and there is no 

 fuliginous in the first submarginal cell. Length, includ- 

 ing the short ovipositor, 32 mm. ; of wing, 24 mm. 



18. Erax carinatus Bellardi? Hermosillo(Sonora), 

 Mexico (Eisen). One female. I refer this specimen 

 doubtfully to this species, on the strength of Osten Sack- 

 en's note on two similar females from Presidio, Mexico 

 (Biol. Centr.-Am. Dipt, i, 205). In the present speci- 

 men, however, the hairs on the scutellum are quite whitish, 

 and the ovipositor is not so elongate. Only the male of 

 carinatus was described by Bellardi, and Osten Sacken, 



