Dec, 1904] SCHAEFFER : NeW CoLEOPTERA. 225 



intermixed, densely pubescent with short white and ochreous hairs. Beneath and 

 legs densely pubescent with white and ochreous hairs. Length, 9-II mm. 



Key Largo, Florida, two specimens from Mr. G. Beyer in the 

 Museum of the Brooklyn Institute. 



In form and sculpture like crypta but the pubescence is different 

 and the apex of elytra is bispinose. According to the description it is 

 similar to A. spinipennis Chev. from Cuba, but that is described as 

 olivaceous, below irrorate with white and black, the thorax with a 

 median longitudinal costa, length 19-20 mm. and is made the type of 

 the genus Prcecha by Thomson. 



Thryallis undatus Chev. 



This fine insect occurred near Brownsville on the branches of a 

 species of Celtis from April 15 to July 12, but is by no means common. 



The genus Thryallis is a member of Lacordaire's group Aniso- 

 cerides, included by Bates in his group Acanthoderini. The species 

 of this genus are distinguished by their short, broad form, antennae 

 eleven-jointed in the male, ten-jointed in the female, with first joint 

 attenuate at base, pyriform at apex, joints three and four very long, 

 from joint six rapidly decreasing in length, the thorax is feebly tuber- 

 culate at sides. Lacordaire principally separates the Anisocerides 

 from the Acanthoderides by the open intermediate cotyloid cavities, 

 closed in the latter tribe, but according to Bates are not quite closed 

 in Acanthoderes and allied genera. 



Cryptocephalus arizonensis, new species. 



Head, thorax and legs reddish, elytra blue, epipleurae yellow from base to the 

 middle. Head reddish yellow, front impressed on top, around the impression 

 coarsely punctate, clypeal region smooth ; eyes elongate, emarginate inside, antennre 

 longer than half the entire body. Thorax strongly transverse, convex, sides slightly 

 rounded, basal angles sharp, prolonged backwards, base slightly arcuate, disk finely 

 and densely punctate, with larger punctures intermixed, color red, basal margin nar- 

 rowly bordered with black, basal angles yellow. Scutellum black, finely punctured, 

 broader at base than at apex, at middle of base a deeply impressed fovea. Elytra as 

 wide as the thorax, blue, with rows of large, deep, closely placed punctures, finer 

 towards apex, regular on the disk and confused at sides, marginal and submarginal 

 strife regular at sides confused at apex, intervals flat, very finely punctate ; epipleurse 

 yellow to the middle. Pygidium black, sparsely pubescent and coarsely punctate. 

 Underside black, prosternum, sides of thorax beneath metasternum in front of middle 

 and first abdominal segment between the coxse yellow ; prosternum convex at middle, 

 lobed in front, not sinuate nor toothed near the front angles, bispinose and concave 

 behind. Abdominal segments coarsely punctate, the punctures placed in one or two 

 rows, sparsely pubescent, last abdominal segment with a broad round concavity 

 pubescent around the sides with longer erect hairs. Length, 5-25 mm. 



