122 
Psyche 
[June-Sept. 
bicula at the constriction, calling the portion behind the 
constriction the abdomen and the part anterior to it the 
thorax, then Say’s description: “ovate body, broadest and 
very obtusely rounded before, with thorax ofrtriangular,” 
accords with that genus, at least far more so than with any 
other Trombidioid. Moreover the surface of this Trom- 
bicula is “unequal, with numerous indentations.” The dis- 
crepancies are, “minutely scabrous.” “With hardly per- 
ceptible hairs” may be true enough but these two statements 
seem contradictory. The description of the hairs of 
T. sericeum fits T. scabrum and vice versa! Eyes white is 
difficult to explain unless Say took for eyes what I take to be 
eyes in this otherwise eyeless genus. If he saw these eyes 
he must have seen the hairs correctly in both species 
(genera) but must have gotten his two descriptions mixed. 
At any rate he secured two Trombidioid looking mites 
from trees in April. I secured two species from the same 
localities and niche in April. My most common species is 
unquestionably the same as his most common (Smaris) . On 
the whole his descriptions fit my two commonest Trom- 
bidioids. Therefore, until someone can duplicate our col- 
lecting and get quite different results, I will have to accept 
these two species as described below. 
Trombiculoides gen. nov. 
Resembling Trombiculus but with area sensiligera much 
more highly developed, triangular, with one of the angles 
directed posteriad, the others laterad (figures 1 and 2) ; 
immediately posteriad of the lateral angles are rounded 
bosses which appear to be eyes. This area sensiligera is 
situated in a hollow or recess formed by the highly developed 
lateral lobes of the thorax, which extend far anteriad and 
tower above the sensiligerous area. The anterior edge of 
the abdomen (s.s.) also encroaches on the area and 
also towers high above it, thus very much secluding this 
sensitized area. 
Type : Trombiculoides scaber comb. nov. 
The presence of eyes (for the structures in question have 
every appearance of eyes) in this area and in this group, 
makes this species quite distinct from all other Trombidiids. 
