COLEOPTERA. 181 



the posterior tarsi when compared with the first two combined is miicii 

 longer and more slender than in hiuotuta. In addition we have many 

 minor differences, for example the color and elytral maculations wliich 

 are very different, and also the sparser pubescence of the under surface 

 in hinotata, and tlie more convex occiput in lateipennis. 



STRIGODERMA Burra. 



S. piinalis n. sp. — Rather dopressecl ; sides nearly parallel. Color 

 very variable, median portions of the sterna usually darker, black to pale 

 testaceous-brown, always strongly opalescent with metallic green or red 

 which is more evident in the dark specimens ; elytra glabrous, pronotum 

 clothed sparsely with long fine pubescence ; under surface sparsely and more 

 coarsely pubescent, more coarsely and very sparsely so on the abdomen ; 

 integuments polished. Head very slightly longer than wide ; interocular 

 surface moderately convex, very coarsely deeply and closely sculptured, with 

 very short impressed and vermiculate channels except along the base of the 

 occiput where the punctures are isolated ; first two joints of the antennae fus- 

 cous, the remainder dark piceous, club shorter than the remainder ; last joint 

 of the maxillary palpi much longer than the three preceding together, robust, 

 sub-cylindrical, obtusely acuminate at tip \ sides of the mentum narrowly 

 and deeply emarginate. Prothorax slightly wider than long ; sides almost 

 evenly arcuate, slightly more strongly so anteriorly ; basal angles broadly 

 rounded, apical acute and scarcely rounded ; apex about two-thirds as long 

 as the base, the former broadly emarginate, the latter strongly arcuate in 

 the middle, very feebly sinuate toward the basal angles; disk moderately 

 convex, narrowly margined throughout its circumference, sparsely and 

 rather coarsely punctate, the punctures becoming larger and more coales- 

 cent toward the sides; having at each side near the apical angles an oblique 

 canaliculate impression, and, just before the middle, a rounded punctiform 

 impression j just behind which there is another broadly impressed oblique 

 impression parallel to the one at the anterior angles, the two posterior often 

 coalescent ; median canaliculation broadly impressed nearer the apex than 

 the base, not attaining either. Scutellum very slightly wider than long, 

 sparsely and finely punctate. Elytra nearly one-half wider than the pro- 

 notum ; sides parallel and very slightly arcuate ; humeral protuberances 

 prominent, elongated posteriorly; each elytron evenly rounded behind ; disk 

 depressed, deeply striate ; striae coarsely foveolate, ])unctures very shallow 

 and in close contact ; intervals very slightly wider than the striae, in the 

 form of very convex ridges ; disk two-fifths longer than wide and four-fifths 

 longer than the head and pronotum together. Pygidium strongly rugulose ; 

 ridges transverse. Larger claw of anterior and middle tarsi cleft at tip. 

 Length 11.0 mm. 



Arizona, 5. 



This species, until now confounded with arboricola, I find to differ 

 in many characters irrespective of color and siiape. In pimalis tlie 

 two teeth formed by the cleft at the tip of the middle tarsal claws are 



