22 
Psyche 
[March - June 
Mucro with apical tooth much larger than anteapical; basal spine 
slender but reaching the apex of the anteapical tooth. Anterior 
macrochaetae as follows: dorsum of head with an interantennal pair, 
and then in the anterior half of the median field six more arranged 
along the sides of a triangle with its apex near the interantennals ; a 
straight row of eight setae along each antenna base; ventral surface 
with scattered setae along the anterior third. Second thoracic seg- 
ment with two rows along the anterior margin and a transverse row 
of eight setae along the posterior margin. 
Type locality: Morril Cave, Sullivan County, Tennessee. X ’56, 
T. Barr coll. Also taken from Hamilton Cave, Bland County, Vir- 
ginia. 
Discussion 
This striking species is quite unique in the chaetotaxy of the head 
and the structure of the unguis. In both characteristics it appears to 
be related to P. alba and may well represent a cave derivative of this 
species. The fact that the modifications for cave life are relatively 
slight makes it entirely possible that this is in fact a troglophile form 
which is so far undescribed from epigeic habitats. 
Pseudosinella hirsuta Delamare (new combination) 
Figures 47-58 
Troglosinella hirsuta Delamare 1949, Notes Biosp’e., 4: 12 1-2. 
Facies typical of genus. Background color yellowish white with 
slight touches of blue or reddish (?) pigment, particularly in the 
region of the antennal bases. Head elliptical, normally without eyes. 
Antennae elongate with all segments subcylindrical ; fourth segment 
usually showing signs of ringing with a definite small conical projection 
at the apex; apical organ of third segment with two curved elliptical 
paddles, constricted basally. Second thoracic segment slightly humped. 
Fourth abdominal segment about six times as long as the third. 
Unguis elongate with a small external and three small internal teeth, 
the basal pair being on the same level. Empodial appendage narrow 
and lanceolate with a small external tooth. Tenent hair small and 
acuminate. Mucro with apical tooth about twice as long as anteapical 
and weakly upturned at the apex; basal spine just reaching the apex 
of the anteapical tooth. Anterior macrochaetae as follows: dorsum 
of head with an interantennal group marking the corners of a narrow 
rectangle; a row of nine setae along each antenna base with the 
posterior one or two in each row displaced inward ; ventral surface 
