INSECTA. 467 
genera belong to the Pentamera. The Heteromera are such as have 
an unequal number of joints of the tarsus in different feet, namely, 
five in the first four feet, four in the last two. The remaining 
divisions, which have been formed, are Tetramera, Trimera, Dimera 
and Monomera; the last two, however, in consequence of later 
observations, are obsolete’, and there remain only the Z'rimera and | 
Tetramera ; on which we may remark, that, according to more 
accurate investigation, in the Zrimera and in many Tetramera a 
small joint has been found situated at the base of the last joint, and 
which, when this joint is in its ordinary position, is almost con- 
cealed and invisible. The 7rimera are thus in reality Tetramera ; 
they are named by Westwoop, Pseudotrimera (Cryptotetramera 
Burm.). The Zetramera of LarrEtLie are now named by Bur- 
MEISTER Cryptopentamera, by Wxstwoop Pseudotetramera. The 
first three or four joints of the tarsus are commonly broad and 
below flat, furnished with small inequalities and beset with little 
hairs at the margin. The last joint (the last two joints taken 
together in the Pseudotrimera and Pseudotetramera) is small, 
inversely conical, elongate, horny and smooth, and terminates with 
curved nails or hooklets. 
A. Pseudotrimera. 
Family XLIV. Coccinellide (Aphidiphagi Larr.) Body 
nearly semi-globose, above gibbous, below plane. Thorax short, 
broad, lunate. Antenne inserted before the eyes, capable of con- 
cealment under the head, shorter than thorax, terminated by a 
capitulum ob-triangular, compressed. Maxillary palps securiform 
(with last joint large, depressed, triangular) ; labial palps filiform. 
Feet short; second joint of tarsus bilobed, broad. 
Coccinella L. 
Sub-genera: Coccidula Mucer.e (Cacicula Srupn.), Scymnus 
KUGELANN, &e. 
1 Thus the Pselaphii (supposed previously to be dimera) have, according to LzEacu, 
three joints, and Clambus, the only genus of the so-named monomera, has four joints, 
according to WEStTWoop, Introd. to mod. Class. 1. pagve 
2 Pu. W. J. Mier observed this in Coccinella, Unuterr’s Mag. s. 218. In 
Cerambyx there are in this way five joints. Comp. also Krrpy and Spenon, Introd. to 
Entomol. 111. pp. 683, 684, and especially W. & Mao Luray, On the Structure of the 
Tarsus in the tetramerous and trimerous Coleoptera of the French Entomologists, Transact. 
of the Linn, Soc. Vol. Xv. 1827, pp. 63—74. 
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