H. F. BASSETT. 329 



dot of jelly developed into a larvre that by Winter reached full de- 

 velopment. I watched them through the next Spring and Summer, 

 and towards September had the pleasure of finding mature imagoes 

 in the breeding box. 



The flies, all females, are a remarkably large and strong species. 



The head small and of a yellowish brown color. The face smooth and a shade 

 lighter than the cheeks and vertex. The antenme has fourteen joints, and is a 

 dusky brown throughout, and the annulations are so close as to be counted with 

 difficulty, the first joint is rather stout, the second quite small and oval, the third 

 a trifle longer than one and two together, the remaining of uniform length. The 

 thorax is large, shining and almost black. It seems smooth under an ordinary 

 low-power glass, but a high power shows it to very finely and most beautifully 

 crackled. The parapsidal grooves are deep and broad. The scutellum is not 

 large but is very deeply wrinkled or corrugated. The fovse are large and not 

 distinct. The abdomen is very large, and vertically, unusually deep. There are 

 a few small hairs on the shoulder of the anterior segment. The legs are brown- 

 ish red. The wings are subhyaline; the veins rather heavy and quite distinct. 

 The areolet present. The cubitus reaches to the first transverse, and the radial 

 area is open. Body .18, antennae .12, wings .18. 



Loxaulus spicatus n. sp. 



Galls. — A cluster of galls attached to a small branch of some 

 variety of Quercus virens. They are a dark reddish brown and re- 

 semble more nearly, than anything else I can think of, a rather 

 irregular shaped nubbin of red dent corn. There are twenty-five or 

 thirty galls in the cluster, and it measures about an inch in diame- 

 ter. The larval cell is imbedded in the base of each separate gall 

 in a dry cellular tissue, and in this it somewhat resembles the chit 

 in the kernel of corn. 



My galls have been in hand many years, having been collected in 

 Arizona by the late Prof. E. T. Cox. How this fine and distinct 

 species escaped my attention so long I cannot tell. 



Gall-fly. — Color brownish red. Head paler than the thorax. Antenna? thir- 

 teen jointed, first short, second almost globose, thirteenth longer than one and two 

 together, it is slender and club shaped, fourth and following of uniform length 

 and very distinctly defined and heavier than the third. Head broader behind 

 the eyes. Ocelli black, middle one less distinct than the lateral. Thorax heavy. 

 Parapsides obscure. Two faint, parallel median lines reach from the collare one- 

 third of the distance to the scutellum. Scutellum small, rounded, hairy. Fovpe 

 very small. Abdomen highly polished, shining, dark brown, basal segment with 

 a few scattered hairs on the anterior portion. Legs dull reddish brown. Tibia 

 and tarsi more dusky. Wings subhyaline, microscopically hairy ; veins pale 

 brown. Areolet rather small. Cubitus reaches just half way to the first trans- 

 verse. Eadial area open. Radial vein ends abruptly before reaching the margin. 

 Body .10, antenna? .09, wings .12. 



Six specimens, all females. 



TRANS. AM. KNT. SOC. XXVI. (42) JULY, 1900. 



