Some Littoral Mites of Millport. 139 
Bdellids, quotes Trouessart as stating that this species feeds upon Collembola. 
He is not able to confirm this from his own observations, but adds that he 
has found Bdella sucking the larve of Chironomus sp. and attacking small 
flies; it also wanders over the surface of small accumulations of water and 
sucks the bodies of flies which have failed to emerge successfully from 
pupation. 
The mites of this species collected at Millport have been supplied 
repeatedly with Collembola (Anurida maritima and Isotoma maritima), when 
kept in confinement, but, so far, have not been observed to feed upon them. 
The writer has seen the feeding of Molgus littoralis only once. This was 
upon the shore, and the food was a small living Dipteron, apparently the 
Borborid Limosina zostere. 
Pup 5. 
Fie. 9. Bdella longicornis. 
Outline of right mandible 
and palp, dorsal view. Fifth 
segment of palp, PLP. 5. 
Fic. 8. Molgus littoralis. 
Dorsal view, showing mandibles, Mpz., 
and palp, Pp. 
The other species of Bdellid common on the shore of Millport is a mite 
of smaller size and of a brighter scarlet colour than the last. It is more 
gregarious in its habits, and is found both under dry seaweed and between 
the lamine of the fissile sandstone rocks. In both situations it is commonly 
associated with the Collembolan Anwrida maritima, which probably forms 
its food, though the feeding has not been observed. In the autumn it has 
been observed to spin a silken tent, open at the top, in which apparently it 
prepares to spend the winter. The tent, with one or more mites inside, is 
found in the fissures of the sandstone. 
This species is further distinguished from the last by the presence of only 
two bristles on each of the mandibles, and by the fact that the fifth joint 
of the palp (Kig.9, Pup. 5) is expanded so that it is broader at its extremity 
