— iiS— 



Synopses of Cerambycidae. 



By Chas. W. Leng, B. S. 

 (Continued from p. 103.) 



SCHIZAX Lee, 

 A single species is contained in this genus; 

 S. senex Lee. S. M. C. No. 264, 1873, p. 196. 

 Length .52-.68 in.=i3-i7 mm. Hab. Arizona. 



Opaque black, clothed with cinereous pubescence, the sutural lat- 

 eral and apical margin of elytra fulvo pubescent. Prothorax strongly, 

 elytra slightly punctured. 



TYLOSIS Zee. 

 Contains two species: black, beneath with sparse white pubescence, 

 thorax and elytra red with or without black spots, which are very varia- 

 ble. They are separated as follows: 



Elytra red with black spots; thorax red with several black spots, (Plate I, tiij;. 



18,) ; maculata. 



Elytra red without spots, thorax red with black dot at middle of each side 



oculata. 



T. maculata Lee. J. A. P. ser. 2. II, p. 9; Col. of Kansas, 1859, p. 20, t. 2, 

 fig. 15; punciicollis Klug. Dej. Cat. 3 ed. p. 348; sellata Lee. 1. c. IV, 1858, p. 25. 

 Length .36-. 68 in. =9-17 mm. Hab. Tex., Ariz, and New Mexico. 



T. oculata Lee. 1. c. 11, p. 9. Length .45 in. =11 mm. Hab. Mexican Bdy. 



CROSSIDIUS, Lee. 



A. Prothorax subquadrate. 



Black, clothed with long gray hair; elytra very densely punctured, punctures very 

 coarse at the base, becoming finer behind; front tibia; with a dense brush of 

 hair on the inner side ater. 



B. Prothorax rounded and subtuberculate on the sides. 



Elytra very coarsely punctured towards the base, punctures smaller behind. 



Head, antennce and legs black; under surface and pronotum black or luious; 

 elytra rufotestaceous with basal margin and sutural blotch blaclc, the latter 

 usually narrow or wanting in (J", broader in 9 pv.nctatus. 



Testaceous, antennce fuscous, legs ferruginous; elytra with two costae more dis- 

 tinct than in the other species testaceus. 



Testaceous, antennce fuscous, legs ferruginous; elytra without costse, suture blacl , 

 broader in 9 intermedius. 



Smaller, legs, antennae and head black; under surface yellow, trunk frequently, 

 abdomen rarely blackish; pronotum more or less black; elytra yellow with 

 humeral spot and sutural blotch more or less dilated, black. . . pulchellus. 

 Elytra less coarsely punctured, punctures smaller towards the tip. 



Black, abdomen usually ferruginous; elytra rufo-testaceous, with basal margin 

 and usually the whole of the suture black, the blotch never very much dil- 

 ated; front tilnx with a dense brush of hair on inner side hirtipes. 



C. Prothorax rounded on the sides, not angulated. 

 Elytra densely and finely punctured. 



