34 ENTOMOLOGICAL NEWS [Jan., '12 



tana the vitta is reflected upward at its apex, in bieti it is re- 

 flected downward. 



Lytta arborea n. sp. 



Color metallic, dark blue, a small red dot on vertex, pubescence 

 very short, sparse and mixed light and dark; form small, oblong; head 

 subquadrate, strongly rounded angles, sparsely but very coarsely 

 punctured, punctuation closest at frons and vertex; labntm short, 

 strongly emarginate in front, sides rounded, punctured very finely 

 and sparsely, labro-clypeal suture not distinct ; clypeus short, trans- 

 verse oblong, strongly rounded angles, sparsely and finely punctured ; 

 maxillary palpi long and slender, art. 2 long, very slender, cylindrical, 

 3 is l / 2 as long as 2, and a little thicker, last not quite as long as 2 but 

 much thicker and truncate ; antennae medium, art. i short and swollen, 

 2 very small and beadlike, 3 a little longer than i, cylindrical, 4-10 

 subequal, slightly increasing in diameter, last longer than 10, strongly 

 pointed ; eyes small, flat, far apart, entire. 



Pronotum roughly hexagonal, a slight median impressed line, a large 

 fovea on either side of line, on disk, feebly everted at posterior mar- 

 gin, more strongly at middle, punctured like head, but very much 

 sparser and scattering; scutcllum short and squarish, almost impunc- 

 tate; elytra 2 l / 2 times as long as joint width, ora prominent nervures 

 slightly visible, uniformly rugose, jointly rounded behind ; ventral 

 surface very faintly and sparsely punctured ; legs medium, femora and 

 tibiae a little more closely punctured than ventrals; tarsi long and 

 slender; claws long and stout ; $ antennae long and delicate, last ven- 

 tral deeply notched ; 9 antennae very short, stouter, last ventral shal- 

 lowly notched. 



Length 8 mm., width 2.5 mm. 



Type in my collection. Type locality, Humboldt County, 

 California. 



Distribution Weitchpec, Humboldt Co., V. 20, u, near Ham- 

 burg, Siskyou Co., VI. 2, IT (F. W. Nunenmacher). 



This rare insect was found by beating trees (? dogwood } 

 along the river. It is very scare, but of great interest on ac- 

 count of its unusual habits. None of our other indigenous blis- 

 ter beetles, except the genus Pomphopoea (and possibly Mac- 

 robasis unicolor Kby. which is occasionally taken on small 

 bushes) are arboreal in habits. The present species is the first 

 of the present genus known to live on trees. Structurally, it 

 is not very close to any described form. 



