6 THE FLORIDA ENTOMOLOGIST 
with a pair of spines with expanded tips at its lateral posterior angles, 
Anterior margin of mesothorax shouldered at the angles. Legs short and 
stout. Tarsi unarmed. Wings wanting. 
Abdomen searcely broader than prothorax through coxae. Posterior 
margin of abdominal segments 2-9 each, with two pairs of bristles of 
medium length, all expanded at tip, except the ones at lateral angles of 
Tth and 9th segments, respectively, which are sharp pointed. Tube stout, 
spines at its tip sharp pointed and scarcely more than half the length of 
the segment. 
Measurements: Length, 0.948 mm.—abdomen somewhat extended; 
head length, 0.089 mm.; width 0.106 mm.; prothorax, length 0.857 mm.; 
width on anterior margin 0.122 mm., through coxae 0.204 mm.; mesothorax, 
width 0.17 mm.; metathorax, width 0.155 mm.; abdomen, width at 3rd seg- 
ment 0.204 mm. Tube, length about 0.073 mm.; width at base, 0.053 mm.; 
at tip, 0.024 mm. Length of antennal segments in microns: 
ee ea 
Described from one male taken by F. Sein, from stomach of a lizard, 
Anolis stratulus Cope collected at Santa Catalina, Porto Rico, May 9, 1924. 
Elevation 1,500 feet. 
Gastrothrips fuscicauda, sp. nov. 
Female:—Holotype, color: Head, thorax and abdomen very dark 
brown; all femora, middle and hind tibiae dark brown; fore tibiae brown, 
fuscus on outer margin; fore tarsi yellowish brown, middle and hind tarsi 
light brown; first antennal segment brown, the second a little lighter, the 
third yellowish brown, the fourth colored like the second, fifth to eighth 
dark brown; tube black. 
Head longer than wide, obtusely angular in front, narrowing from 
middle to base, where it is about 5/6 as wide as at middle; postocular spines 
alone prominent, light brown and sharp pointed, Mouth reaching about 
3/4 across prosternum, constricted near tip, rounded. Labium broad and 
broadly rounded. Eyes occupy nearly 2/3 width of head through them and 
not quite 1/3 its length, facets smaller than ocelli. Ocelli rather large, 
posterior pair situated in front of middle of eyes and contiguous thereto. 
Anterior ocellus on extremity of head and pointing forward. Antennae 
normal, 5th to 7th segments stalked, 3rd segment narrow at base—inverted 
cone-shaped. 
Prothorax only half as long as head and only about 1/3 as long as the 
width through coxae; all spines present, reduced in size, those on anterior 
margin tiny, those on posterior angles alone prominent, mesothorax about 
1/9 broader, and metathorax very little broader than prothorax. Legs 
rather short and slender, except the fore pair. Fore femora enlarged, 
about 2/3 as broad as head, fore tarsus armed with a stout tooth about as 
long as diameter of tarsus. Wings present, but not spread, and the details 
cannot be seen, 
