454 PKOCEEiD-riSrGS of the NATIONIAL museum vol.94 



Thorax with mesothoracic and metathoracic scuta as in females of 

 the order." 



Hind basitarsi with only a terminal sole-bladder; densely clothed 

 with large plantar setae. 



Terminalia nearly unicolorous, with structure as figured (figs. 90, 

 91). 10 LP strongly curved ventrad, yellowish distad; membrane 

 of tenth tergal cleft "granular" in appearance medially, with only a 

 faint thickening ; an elongate sclerite, lying above hypandrium proc- 

 ess (HP), is of undetermined homology, and may represent a terminal 

 sclerotization of the ejaculation duct; 10 RP with a characteristic, yel- 

 lowish "talon" crossing its rounded tip ; HP sclerotized, without echin- 

 ulations, with a marginal flange, apex produced as a conical point; 

 left cercus (LCi) vv^th terminal lobe not distinctly submembranous ; 

 basal segment of right cercus with basal foramen complex, greatly 

 produced ventrad, inner margin somewhat flattened and depressed 

 basally. 



G. wheeleri is not closely related to the other species of the subgenus 

 CheUcerca seen by the writer (i. e., davisi and nodulosa). From the 

 abundant distinctive features, the nature of the tip of 10 RPi and the 

 apex of HP may be selected for the purpose of separating it from other 

 species. 



CHELICERCA (CHELICERCA) HEYMONSI (Enderlein), new combination 



Oligotoma hej/monsi Endeelein, 1912, p. 114, fig?;. 74-76. 



Aniseaibia {?) hcymonsi (Enderlein) Chambeeux, 1923, p. 346. 



Anisemhia Jicymonsi (Enderlein) Davis, 1940d, p. 532. 



Anisembia {Cliclicerca) heymonsi (Enderlein) Ross, 1940b, p. 658, fig. 31. 



Holotype. — Winged male in Berlin Zoologischen Museum. 

 Type data. — Sierra Mixteca (Oaxaca?), Mexico (C. A. Purpus). 



Subgenus Dactylocerca Ross 

 Dactylocerca Ross, 1940b, p. 659 (type: Anisemhia ruhra Ross). 



CHELICERCA (DACTYLOCERCA) RUBRA (Ross), new combination 



Anisenibia {Dactylocerca) rubra Ross, 1940b, p. 659, figs. 35-37. 



Holotype. — Winged male, on slide (type No. 4931), and allotype^ 

 female, on slide (type No. 4932), California Academy of Sciences. 



Type data. — Rosarito Beach, Baja California, Mexico, April 3-5, 

 1939 (Michener and Ross). 



Distribution. — Northwestern Baja California, southern California, 

 and southeastern Arizona. (See also p. 499.) 



" This appears to indicate tbat only apterous males may bo expected in tliis species. As 

 noted previously, when a species has both winged and winjrless males [e. g., Anisemhia 

 teavna (Mclauder)], the latter have rudimentary wing pads on the posterior angles of 

 the scuta. 



