1/0 Proceedings of the Biological Societi/ of Uhisliinglon. 
other bristles minute and barel}^ visible. Pterotljorax slightly wider than 
])rotborax, sides snbparallel. Legs nearly nnifonn orange-yellow, exce])t 
for a narrow wash of brown along outer snrfa(‘es of bind femora; fore 
tarsus unarmed. 
Abdomen stout, heavy, about 1.4 times as broad as jAerotboi’ax. Tnlto 
three-fourths as long as bead, slightly more than twice as wide at base 
as at apex, sides almost straight; abdominal bristk's pointed, light 
brown ; terminal bristles as long as tube. 
^Measurements of bolotype: f.engtb 2.5b mm.; bead, length ..‘i-lcSmm., 
width .288 mm.; jirotborax, length .288 mm., width (inclusive of coxje) 
.438 mm.; pterotborax, width .480 mm.; abdomen, width .(584 mm.; 
tube, length .2(54 mm., width at l)a.se .131 mm., width at apex .050 mm. 
Antennal segments: 1, about 75m; 2, about 75m: 3, 111m; 4, length 102m, 
width 42m; 5, 00m; (>, 75m; 7, 58m; 0,50m; total length of antenna .04mm. 
Described from one female taken by sweeping, at Plum J\)int, Mary¬ 
land, August 9, 1913, by \7. L. 3IcAtee. 
This is an easily recognized species, allied to C. denlipn (Reuter) and 
C. bicolor (Heeger). The short tube and the color of the legs and pro¬ 
thorax separate it readily from denlipes, while the coloration of the 
anteniife and the absence of a sense-cone on the inner surface of the third 
antennal segment should serve to distinguish it from hlcolor. 
Cryptothrips bicolor (IJeeger). 
1852. Phloeoihrips bicolor Heeger, Sitzungsb. d. Akad. d. AViss., AVien, 
IX, p. 477, tab. XVIII. 
1889. Fhlosothrips bicolor Uzel, AMsmfr, rocnik XAHII, str. 259. 
1895. Cryptothrips bicolor JJzel, IMonogr. d. Drdn. Thys., p. 235. 
This species appears to have been recorded only from Austria, where it 
was taken at Vienna as early as 1808, and in Bohemia, by I.V.el, at a 
later date. Mr. ,1. Ck Faure collected two females ami one male of a 
Cryptothrips which agrees exactly with Uzel’s descrij)tion of bicolor, at 
Lanastota, Xew \oik, Alarch 12, 191,), from grass. It has been impos¬ 
sible to compare these specimens with European ones, because of the 
rarity of the species, hut the identilication is almost certainly correct. 
Megalothrips spinosus Hood. 
1908. Megalothrips (?) spinosus Hood, Can. Ent., vol. XL, p. .300, figs 
10, 17. 
1909. Megalothrips (?) spinosus Franklin, Ent. News, vol. XX, p. 231. 
1910. I[dolothrips'\ spinosus Crawford, Pomona Coll, .lourn. Ent., vol. 
H, p. 170. 
Specimens of this large thrips have been examined by the writer from 
the following localities: Harrisburg, Pennsylvania (type locality), March 
10,3 females, “in burrows of Lepidopterous or Coleojd^rous larva in 
dead willow stem”; Rockville, Pa., November 10, 1912, A. B. Chain- 
plain, 23 females and 2 males, “from Cerambycid burrow in oak”; 
