203 
Characters of the Chigoe or Jigger. 
Species 1 . Sarcopsylla penetrans, Linn. Bicho de Pe. 
Plate XX. Fig. 3. 
Fig. 3 a, female natural size; 3 6, ditto magnified, distended with eggs; 3 c, 
head and prothorax; 3 d, maxillary palpus; 3 ee, mandibles; 3 f, lingua; 
3 g, labium 13 6, one of the feet ; 3 i, part of the coil of eggs ; 3 k, ditto 
nearer to the anal orifice ; 3 /, one of the eggs opened. 
Species 2. Sarcopsylla canis, Westw. Biclio de Cachorro. 
Differentiae specificae hand determinatae. 
Ohs. — Since this memoir was read, M. Duges has published a 
memoir on the Jigger, in the Annales des Sciences Naturelles for 
September, 1836, in which he has traced the organization of gravid 
females, but has not considered it proper to separate it generically 
from the genus Pulex. M. Guerin, also, in his Iconographie da 
Regne Animal, (Insectes, pi. 2), has given figures of the insect in 
various states. His figures 9 and 9 a represent a specimen with 
the abdomen of the ordinary small size, and terminated by a long 
furcate instrument, composed of five pieces (fig. 9 f and 9 g), and 
which in his descriptive text (for proof sheets of the first part of 
which I am indebted to him) he regards as a male, with exserted 
organs of generation, considering that the forked appendage can- 
not be an ovipositor, and consequently that the individual must be 
a male. His figure 9 b represents a female, with the abdomen 
distended as in my figure ; and in his text he proposes the ge- 
neric name of Dermalophilus for the insect. 
XLI. Description of a minute Crustciceous Animal from the 
Island of Mauritius. Dg Robert Templeton, Esq. It. A. 
[Read 4th April, 1836. J 
Class CRUSTACEA, Brisson. Lam. 
Sub-class Malacostraca, Latrcille. 
Order Amphipoda ? Latrcille. 
Genus novum, Zeuxo. 
Antennce 4, breves, subeequales, spinis armatae ; superiores, 3-ar- 
ticulatse, articulo lmo multo majore ; inferiores indivisae, 
5-articulatae, articulo ultimo valde min u to. 
Oculi duo : antennis superioribus contigui, in squamis subtriangu- 
laris capite articulatis immersi. 
