CYAMUS CETI. 87 



the former, to M. Milne Edwards, who, however, rejects 

 the Linnean specific name Ceti. The animal represented 

 by the former (Plate 58, fig. 2) from Talcahuna, in the Paris 

 Museum, appears to be a male, being much more slender 

 than the specimens represented by Savigny, and in our 

 woodcut. The head is oval, its hinder portion being 

 connate with the first segment of the body, of which the 

 central portion is much shortened, the sides swelling 

 into rounded lobes. The upper antennae (b) are about 

 twice the length of the head ; the first, second, and third 

 joints of nearly equal length ; the first being the thickest 

 and somewhat triquetrous, the terminal joint is minute 

 and conical. The lower antennae (c) are very minute and 

 slender, not being more than one-third of the length of 

 the basal joint of the superior, with four joints, the third 

 being the longest, and the fourth very minute. The 

 upper lip (*), copied from Savigny, is rounded at the 

 base and slightly emarginate in the middle of its fore 

 margin, whilst the tongue (**) is somewhat four-lobed, 

 or rather it is deeply incised in the middle of its fore 

 margin, and is furnished in the centre with a narrow 

 bipartite projection, shorter than the lateral lobes. 

 The mandibles (d) are somewhat triangular, destitute of 

 a palpiform appendage, but furnished with a separate 

 denticulated tooth below the extremity, which is similar 

 in character: the first and second maxillae are affixed on 

 the same plane (as in the Myriapoda, although not sol- 

 dered into one piece as in that order) : the first pair (<?) 

 are large and flattened, apparently three-jointed and des- 

 titute of palpi, the terminal joint being large, rounded 

 at the outside of its extremity, with several hairs forming 

 a brush in the middle of the convex side ; the second pair 

 of maxillae (/) are minute, and apparently three-jointed, 

 the second and third joints being very minute ; they are 



