Dr. Leacu’s Arrangement of the Crustacea, &c. 399 
Spec. 6. Trodes Pari. 
Ix. scuto elongato-subhexagono fusco : disco subferrugineo-fusco, 
rostro ferrugineo-fusco, vagina fuscá, pedibus fuscis articulis 
dilutioribus et albidis. 
Habitat in Paro majore. Tempore autumnali, vernali. 
Rostrum ferrugineo-fuscum. Vagina fusca. Clypeus utrinque 
obscurissime subexcavatus. Scutum elongato-subhexagonum an- 
ticé angustius, disco pallidiore. Pedes fusci, articulis pallidis et 
albidis; tibiz articulis extimis ad apicem subferrugineis ; tarsi 
albidi, articulis obscuré subfuscis. 
The Acarus mentioned by Montagu in his Paper on Bats 
(Trans. Linn. Soc. vol. ix.) belongs to this genus. 
Stirps 2. 
Rostrum et palpi absconditi. 
Gen. 8. Unoropna, Latr. 
Fam. V. CHEYLETIDES. 
Os rostro instructum. . Oculi distincti. 
This tribe still requires to be examined ; it contains the genera. 
9. Cheyletus, 10. Smaris, 11. Bdella, and 12. Sarcoptes of Latreille. . 
SECTIO 1L 
Pedesnatatorü. < 
"» Fam.I. Errariprs. 
Os mandibulis instructum. 
Gen. 13. Erraıs, Latr. 
Fam. II. Hypracunipes. 
dibulis nullis. 
Os TP Gen. 14. 
