2 2 2 PSYCHE [( )ct.— Dec. 



Y-shaped, dark brown stripe begins on the mesothorax, crosses the metathorax, 

 and extends on the dorsum of the abdomen to the posterior margin of the seventh 

 segment. The base of the stripe is median on the dorsum of the abdomen and 

 grows gradually wider anteriorly ; it is narrowed between the segments. The 

 arms of the Y nearly reach the anterior angles of the mesothorax. On the thorax, 

 the stripe is somewhat lighter in color having a distinct reddish tinge. The pos- 

 terior angles of all the abdominal segments above, except the last three, are dis- 

 tinctly flecked with pure white. There is also a somewhat indefinite white spot on 

 each side of the dorsal stripe on each side segment. The appearance of the ven- 

 tral side of the insect is the same by reflected as by transmitted light. 



Larva. — On the 23d of October, 1903, several specimens, apparently all 

 belonging to the same larval instar, were found congregated together with a num- 

 ber of adults. 



Length 1.2 mm.; width of meso-thorax .36 mm. General shape fusiform ; color red. 



Head quadrate and lighter in color than body ; cheeks straight and parallel ; post-ocular 

 bristles prominent and knobbed. The head also bears. four other bristles which are similar 

 to those behind the eyes; two of these are situated between the eyes, one on each side, about 

 half-wav between the middle of the head and the margin of the eye ; the other two are situ- 

 ated about half-way between these and the margin of the thorax. The eyes are small, round, 

 black in color, and very widely separated. Antennae consisting of seven segments, light- 

 brown in color, the third segment the longest ; second segment bearing knobbed hairs, fourth 

 and fifth segments bearing sense cones: apical segment bluntly pointed and bearing a long, 

 slender, acute hair at its end. 



Thorax red, with irregular and indefinite transparent markings; bearing knobbed hairs 

 like those on the head on all three segments. Legs very light brown in color; femora bear- 

 ing knobbed hairs ; tarsi bearing two strong claws. 



Abdomen about one-half the length of the body, tapering gradually to the end of the 

 tube; red in color, with irregular transparent markings; first segment transparent, fourth 

 segment somewhat lighter than the others. All the segments, except the last two, bear 

 knobbed hairs. Toward the posterior part of the abdomen, the hairs gradually grow longer. 

 Around the posterior margin of the 9th segment there is a circlet of long spines which are 

 strongly bent near their tips. The tube is about two thirds the length of the head, tapers 

 gradually from base to apex, is light brown in coloi-, and bears a circlet of acutely pointed 

 spines at its tip ; only two of the eight extremely long hairs seen in the adult are developed 

 and these are on the ventral side of the tube in all my specimens. 



On October 3rd, 1903, 1 found a large female Acanthoihrips noditornis Reut. 

 also under the b irk of the sycamore. This is the species on which Uzel founded 

 the genus and it does not seem to have been reported heretofore in this country. 



It would be useless for one to attempt to redescribe the species from one 

 specimen, but this species may be readily distinguished from magna/e/iiora/is by 

 its larger size and dark brown color. The last three abdominal segments are dark 



