496 PEOCEEPINGS OP' THE NATIONAL MUSEUM vol.94 



Oligotoma calif ornica (Banks) Banks, 1924, p. 421, fig. (in part). 



Oligotoma saimdersii of Needham, 1900, p. 193 (misideutiticiition, see Ross. 1940b, 



p. G70). 

 Oligotoma mesopotoniica Esben-Peteesen, 1929, p. 8.— Davis, 1940c, p. 364. 



Lectotype. — Winged male, carded, Museum of Comparative Zoology. 



Type data.— Island of Khoda, Cairo, Egypt. 



General distribution. — Date-growing regions of Old and New World 

 (where palms were introduced by cuttings, i. e.. Southwestern United 

 States). 



OLIGOTOMA HUMBERTLA.NA (Saussure) 



Embia hunibertiana Saussube, 1896b, p. 353. 



Oligotoma humhertiana (Saussure) Davis, 1930a, p. 186, fig. 5.— Ross, 1940b, 



p. 674, figs. 48-50. 

 Oligotoma saimdersii of Krauss, 1911, p. 39.— Et al. (misidentifications). 

 Oligotoma californica of Navas, 192yb, p. 31 (misidentification, see Davis, 



1939a). 



Holotype. — Male, Museum d'Histoire Naturelle, Geneva. 



Type data. — Ceylon. 



Distribution. — Artificially tropicopolitan. In New World occurs 

 sporadically from Mexico to temperate South America and is less 

 frequently collected than saundersii. 



Genus GYNEMBIA Ross 



GynemUa Ross, 1940b, p. 664. 



Genotype. — Gynenibia tarsalig Ross, 

 Distribution. — California and Arizona. 



GYNEMBIA TARSALIS Ross 



Gynem'bia tarsalis Ross, 1940b, p. 664, figs. 4, 39. 



Holotype. — Female, on slide, California Academy of Sciences 

 (type No. 4934). 



Type data. — Clayton, Contra Costa County, Calif., July 4, 1939 

 (E.S.Ross). 



Distribution. — California, Arizona (one record). 



Remarks. — This species is known only by parthenogenetic females, 

 although many hundreds of individuals have been collected as well 

 as reared through several generations in the laboratory. It is rec- 

 ognized at once by the fact that it is the only known North American 

 species of the order possessing two basitarsal sole-bladders, as well 

 as by its distribution. 



At this time the writer is provisionally placing the genus and 

 species in the family Oligotomidae because its general facies and 



