Dr. Leacn’s Arrangement of the Crustacea, &c. 391 
Spec. 1. Obisium trombidioides, Latr. 
Montagu has confounded this species with another, under the 
title of Acaroides*. 
Gen. 3. CHELIFER, Geoffroy. 
Corpus depressum. Thoraz tripartitus. Mandibule breves. Oculi 2. 
' Spec. 1. Chelifer fasciatus. 
C. manu ovatä, abdomine segmentis margine albidis. 
Habitat sub cortice arborum. i 
This species is mentioned by Geoffroy (Hist. des Ins. ii. 618.) 
Stirps 2. 
Cauda articulata, elongata, aculeo curvato terminata. Oculi G aut 8. 
Gen.4. Buruvs. 
SconPro auctorum. 
Oculi octo. 
Spec. 1. Buthus occitanus, Latr. 
Gen. 5. Scorrıo, Latr., Fabr., 4c. 
Oculi sex. | | 
Spec. 1. Scorpio europeus, Latr. 
Fam. III. TARANTULIDES. 
Mandibule monodactyle. Pedes duo antici antenneformes, gra- 
cillimi ; sex postici consimiles. Oculi octo. Palpi brachiiformes. 
* Phalangium acaroides, p. 7 of this volume. Pe 
Stirps 1. 
