COCCORCHESTES.—SIMONELLA. 163 
less curved, and the ocular area is rather narrower, i. e. the area included by the two lines of the fore, 
lateral, and posterior eyes. In C. scarabeoides this line of the posterior eyes comes nearer the line of the 
hinder slope than that of the fore-lateral eyes, while in the present spider it appears to be exactly halfway 
between them. The colour of the legs is pale yellow. The palpi have the radial joint shorter than the 
cubital, and the apophysis at its termination on the outer side is stronger and longer in proportion than 
in C. scarabeoides. The palpal organs also differ ; in the present species they are surrounded by a strongish 
coiled filiform spine. The upper covering of the abdomen is punctured and black with purple reflections, 
but not nearly so rich and glossy as in the other species mentioned. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
This very minute Salticid spider is also nearly allied to C. cupreus, Sim., as described 
by G. W. Peckham (‘Occasional Papers of the Nat. Hist. Soc. of Wisconsin,’ vol. ii. 
no. 3, p. 169); but Mr. Peckham describes the latter spider as “ purple on the thorax,” 
‘and brown on the abdomen,’ whereas these colours in the present spider are 
exactly reversed. If this is also true of M. Simon’s type, this disposes of M. Simon's 
conjecture that my C. scarabeoides and his C. cupreus are identical. At any rate, I 
feel tolerably certain that the present spider is distinct from, though nearly allied 
to, C. scarabeoides, Cambr. 
SIMONELLA, Peckham. 
Simonella decipiens, sp. n. 
Adult male, length 23 lines; adult female, length very nearly 3 lines. 
The male is entirely of a dull orange-yellow-brown colour, except the posterior extremity of the abdomen, which 
is pale yellowish; the caput is black, the limits of this colour being well defined and not encroaching at 
all on the thorax ; between the caput and thorax is a very strong transverse constriction, and a slighter 
one near the abdomen. The legs are slender, and not very long, 4,3, 2,1; the tibiz of the first pair have 
a black longitudinal line on the inner side. The fore part of the abdomen is connected with the hinder 
part by a long narrow constricted neck, which enlarges to an oval-shaped hinder extremity. The fore 
part, as well as the greater part of the hinder extremity, is covered with a kind of chitinous skin. The 
whole spider’s form is thus very narrow, elongate, nodose, and more than usually formiciform. The 
abdomen of the male has no markings on it, but on that of the female there are several transverse 
patches on the upperside; the two on the anterior part are dusky yellow-brown, one just behind the 
constriction is narrow but blackish, well defined, and with a prominent point at the middle of its fore 
margin, and behind this is another dusky patch narrowing to a point near the spinners. The posterior 
constriction of the cephalothorax of the female is stronger than that in the male, but that of the abdomen 
is in the female but slight, the form of this part in that sex being elongate-oval with a slight constriction 
near the middle, and the upperside of its anterior extremity is covered by a smooth chitinous patch. 
The palpi of the male are short; the cubital is rather shorter than the radial joint, which has a number of 
strong hairs on its inner side, and a short obtusely pointed apophysis at its extremity on the outer side ; 
they are yellow-brown in colour, the digital joint darkest, and its length is more than equal to the radial 
and cubital joints together; the palpal organs are simple, with a black filiform spine round their inner 
side close to the margin of the joint. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
This spider is nearly allied to S. americana, Peckh., but is even more ant-like in its 
general appearance, and differs in colours and markings, the black caput being better 
defined, and the male being without any markings on the abdomen. 
To show the close resemblance of this spider to an insect of the hymenopterous 
yf 2 
