34 ENTOMOLOGICAL NEWS. [Feb., 'o2 



humeral angle unbroken, except by the punctures, and continuing nearly 

 to the tip. Elytron obliquely narrowed at apex. Thorax cylindrical with 

 a longitudinal stripe of dark yellow hair on each side and on top, under- 

 side yellow. In the male the thorax is very long, being about one-third 

 longer than wide ; in the female as long as wide. Scutellum yellow. 

 Entire insect covered by rather large and deep glabrous punctures slightly 

 smaller beneath ; they are much larger than those of mutica and only about 

 one-half as numerous. Head ; hairs yellow, changing to gray at the lab- 

 rum. Legs and underside of body light yellowish gray, with glabrous 

 punctures ; antennas annulate except the first joint, which is entirely 

 covered with light gray hairs, and is moderate in thickness, not being 

 enlarged as in obliqua and miitica, rest of antennae quite robust with basil 

 two-thirds of each joint covered with light gray hair, remainder black. 

 The pygidium of female has a deep longitudinal depression along the 

 median line, dividing it into two lobes, tip also bilobed. Eyes nearly 

 divided. Size, $ 16 mm. 9 20 mm - 



Types, oue female (Calif.) collection Dr. Horn. One alem 

 (Yosemite, Calif.), collection Coquillett, National Museum. 

 Male and female coucolorous. 



This insect can be readily separated from mutica by the bi- 

 lobed last dorsal segment (Figs. 2 and 3), which in mutica is 

 very convex (Figs. za and 3) and, therefore, highest in the 

 middle ; also by the first joint of the antennae being gray and 

 moderate in thickness, while in mutica the joint is swollen and 

 black, the rest of the antennae in mutica is also thinner and 

 shorter (Figs 4 and 4*7). The eyes are much more divided 

 than in mutica (Figs, i and ia) ; the thorax is about as wide 

 in front as back, but in mutica the front is narrowed (Figs. 5 

 and 5#). 



It is very desirable for the monograph on Saperda by Dr. 

 Felt and myself mentioned above, that we see more material 

 in the genus from all parts of the West, and all material sent 

 me for study will be returned. 



EXPLANATION OF FIGS. 

 Fig. i. Eye of hornii, showing degree of divison compared with Fig. id, 



eye of mutica. 

 Fig. 2 and 2a. Transverse section of last dorsal segments of hornii and 



mutica at dotted line shown in Fig. 3 and 3. 

 Fig. 4. Antennae of hornii; Fig. 40. Of mutica. 

 Fig. 5. Head and thorax of hornii ; Fig. 5. Of mutica, 

 All figures greatly enlarged. 



