64 
Psyche 
[February 
segments 6-10, abruptly nearly black; antennae nearly white, 
with segment 2 at sides, all of 5 except pedicel, and all of 7-8 
dark brown; legs nearly white, mid and hind tibiae with a narrow 
ring of gray near middle; cup of tarsi dark; wings colorless; 
eyes bright red, a dash of brown behind each; mesothorax 
lightly marked with brown at sides; metathorax with a brown 
spot at middle of metascutum and one at each posterior angle; 
abdominal segments 2 and 3 each with two pairs of minute brown 
dots, one pair latero-dorsal, the other latero-ventral ; segment 4 
with the latero-ventral pair only; segments 6-10 with bright red 
subhypodermal pigmentation, 
Trinidad; C. B. Williams; on dead branch of Lagerstroemia. 
A very beautiful species, as strikingly colored, perhaps, as 
any in the family. Named after Mr. C. B. Williams, its dis- 
coverer. 
Cryptothrips gradatus sp. nov 
Female (brachypterous). — Length about 1.6 mm. Color 
yellow; abdomen shading from brownish yellow in segment 2 to 
nearly black in basal three-fifths of tube, apex of tube pale; head 
in front of eyes, and first two antennal segments brownish yellow; 
segment 3 of antennae brown, pedicel yellowish; 4-8 dark blackish 
brown; legs uniform yellow. Head 1 . 5 times as long as wide, 
narrowed behind eyes and at base; eyes small, composed of a few 
large, separated facets; ocelli wanting; postocular and post- 
ocellar bristles subequal, knobbed; dorsum of head with a pair 
of pointed bristles behind postoculars. Segment 8 of antennae 
conical, closely united to 7. Fore tarsi unarmed. Prothoracic 
bristles all present, knobbed, those at posterior angles longer 
than postoculars, others subequal to postoculars. Tube about 
0 . 6 as long as head, less than twice as long as width at base, which 
is somewhat more than twice the apical. 
Tobago, British West Indies; C. B. Williams; from grass. 
A true Cryptothrips, allied to C. icarus Uzel, but readily 
known by the color, and the form of the last antennal segment. 
