1922] Ball and HartzeU:' Review of Orgerini 141 



The stouter, lighter appearance and the shorter cephalic 

 process will at once separate this species from acuta. Specimens 

 are at hand from the Salton Sink region of California, taken 

 late in June. 



Yucanda no v. gen. 

 Cephalic process long, more than three times the length of the eye. 

 parallel margined as seen from the side, curving upwards at an angle 

 slightly less than 45°, widening toward the truncate tip, where it is 

 five-angled. Front of equal width throughout, tricarinate, the lateral 

 carinas widening and the median carina elevated toward the apex of the 

 cephalic process. Oblique carina extending two-thirds the length of the 

 cephalic process, pustulate below. Pronotum narrow, pustulate, median 

 tablet not differentiated. Eye separated from scutellum by an elongate 

 callosity. Anterior tablet of scutellum raised, tricarinate, lateral pro- 

 jections pustulate. Elytra abbreviated, irregularly reticulate. Abdomen 

 long, oval, obese. Rostrum definitely exceeds the abdomen. Legs long, 

 slender; hind tibia with 4-5 weak spines. 



This genus is readily distinguished from Orgamara by its 

 curved and apically truncate cephalic process. 

 Type of genus Orgamara albida Ball. 



Yucanda albida Ball. 

 (Plate XII, Figs. 2, 7.) 

 Orgamara albida Ball. Proc. Bio. Soc. Wash., Vol. XXII, p. 200, Dec, 1909, 



A large globose creamy yellow species with a long curved 

 cephalic process. Length 6-7 mm. 



Structure of the genus, pale creamy yellow, the eyes, lateral carinae, 

 the antennae, fore and middle tibia and the tip of the rostrum brownish. 



This strikingly distinct species in both color and structure 

 lives, both nymph and adult, upon the tree Yucca {Yucca 

 baccata) of the Mojava desert region. These insects hide between 

 the bases of the sword-like leaves where they are practically 

 inaccessible except to vigorous beating with a heavy club. 

 Adults were abundant together with a few large larvae June 15 

 indicating that a brood was just maturing, while on another 

 visit July 30 but one or two old adults could be found. 



Deserta nov. gen. 



Intermediate between Yucanda and Orgamara but with 

 the apex of the cephalic process beaked. 



Cephalic process moderately long, very nearly parallel margined to 

 just before the apex where it rounds over to the acute and slightly pro- 



