Vol. XXvi] ENTOMOLOGICAL NEWS. 13! 



a specimen still in my possession, sent to me by Dr. Ashmead 

 in 1903. It is a Ptinobins but the wings are not banded. 



Male : Length, about 4.25 mm. Dark metallic aeneous green, the 

 wings hyaline, the abdomen, head, mesothorax and eyes with a soft, 

 close, greyish yellow pile; vertex with coppery tinges, the abdomen 

 darker, purplish black, its second segment green and glabrous. Ven- 

 ation, scape and pedicel, trochanters, knees, tips of tibiae and tarsi 

 reddish brown. Hind femur somewhat swollen and with fine dentic- 

 ulation, distad with five teeth. Funicle and club black. Parapsidal 

 furrows faint, half complete from cephalad. Postmarginal vein 

 twice the length of the stigmal, three-fourths that of the marginal. 

 Propodeum with a median carina and lateral carinae. Pronotum barely 

 wider than long. Sixth segment of abdomen occupying more than the 

 distal half of the surface, segment 2 deeply excavated at meson of cau- 

 dal margin, exposing to view the extremely short third segment, the seg- 

 ments distad of 3 densely, pentagonally scaly, still denser on 6. Head 

 and thorax finely, densely sculptured. Antennae n-jointed, the club 

 solid (though apparently obscurely 3-jointed). Funicle subcompress-' 

 ed, y-jointed, the joints wider than long except the first; one large 

 ring-joint which is slightly wider than long. Pedicel subglobate. Hind 

 tibiae with two stout, unequal white spurs. 



The specimen will be deposited into the collections of the 

 United States National Museum as a type, and there should 

 be several other males in the same collection but which I have 

 not seen. (Accompanying the tagged specimens is a slide with 

 first and third femora and the antennae.) The scape is darker 

 above at tip. The front femur is distinctly swollen, obscurely 

 denticulate beneath, more so above. 



Geotaxis in Trichogramma minutum Riley (Hym.) 

 Once in 1904 I took a female of this species and placed it 

 under a glass jar (10x10 cm.) over a clean sheet of white 

 bristol board. The time was 5 P. M., and the jar was placed 

 just in front of a window looking east and thus away from 

 the direct source of light. The jar was nearly equally lighted 

 on all sides. The insect immediately commenced to crawl up. 

 After a second or two, the jar was inverted rather slowly but 

 the upward motion of the insect continued, its course being 

 gradually changed in a direction equal and opposite to that of 

 the jar; thus, during the half revolution of the jar, the vertical 

 movement of the Trichogramma was continued; when the jar 



