126 Psyche [June-Sept. 
plate which might give this effect. The description fits no 
Erythraeus. 
I found no Labidostoma. 
Gamasus spinipes Say 1821, p. 71 
This may be a Holostaspis (s.l.) or a Cyrtolaelaps (s.L). 
I know of no free living .species which fits the description 
which is rather detailed as to leg characters. As all of Say’s 
other Parasitids were parasitic, this one also may have been. 
He gives neither locality, habitat nor host. 
Oribata glabrata Say 1821, p. 73 
I have already referred to this species (5, p. 260). None 
were found. It is the commonest Oribotritia of the south. 
Bdella oblonga Say 1821, p. 74 
(Figure 8) 
Say describes the distal segment of the palp (the palp- 
tarsus) as “attenuated towards the base and truncated at 
tip.” This places the species in Bdella sensu strictu. The 
size, “rather more than one-twentieth of an inch” that is 
one-sixteenth, makes it the common species of Bdella of that 
region. This species differs from the European Bdella 
longicornis in that : of the two lateral bristles of palptarsus 
(figure 8), the distal is much shorter and finer than the 
proximal (the reverse is true in specimens from northern 
Europe) ; the pseudostigmatic organs are quite persistent 
while they seem quite deciduous in the European species. 
Bdella decipiens (7 and 8) seems to be closely related, but 
palptarsus has only six bristles. 
Bdella oblonga seems to be common throughout the east- 
ern United States. I find no geographical races. Bdella 
cardinalis (1, p. 219) is therefore a synonym. Bdella lata 
(4, p. 69, pi. 2, fig. 9) is also a synonym and Ewing’s figure 9 
a very good toto figure of Bdella oblonga except that one 
bristle of palptarsus has been omitted. The toto figure of 
Bdella cardinalis (4, pi. 1, fig. 6) is inaccurate and should 
be discarded. Figure 5 is good as far as it goes, but figure 7 
lacks two bristles on palptarsus and has two extra bristles 
on the genual. 
