372 Dr. F. Meinert on the Campodee, 
of the rings of the thorax and the first eight abdomen-rings 
(including the segmentum mediale) have one each, so that there 
are eleven in all. : 
The digestive tube, of which the duodenum occupies the 
greater part, is quite straight. I have failed to discover Mal- 
pighian vessels, nor do I think they exist either in Japy# or in 
other Thysanura. 
The ovaries consist of a pair of wide tubes, opening at the 
back of the eighth ventral shield. The eggs were, in the in- 
dividual I examined, few, but very large (9 millims. long), the 
germinative cell large and easily distinguished from its neigh- 
bours. 
Japyx solifugus, Hal. 
Testaceus, abdominis segmentis ultimis atque forcipe praesertim 
obscurioribus. 
Antenne 2 longitudinis corporis breviores, 18—31-articulate. 
Forceps robustus, longitudine scuti dorsalis segmenti ultimi ; 
lateribus interioribus dente instructis. 
Long. 8°5 millim. 
I am indebted for the specimens which I have been enabled 
to examine to the courtesy of Dr. V. Bergsée, who collected 
most of them at Genezzano, in the Sabine Mountains, and at 
Mount Casino, near St. Germano, in the year 1862. It seemed 
to be a mountain species, as he had never seen it in the Cam- 
pagna: his specimens were found singly, under large stones or 
dry moss on the rocks in dry places; they tried to escape by 
running actively about, and resembled a Lithobius in the cha- 
racter of their movements. 
The present paper was ready for publication when Mr. Hali- 
day’s description of Japyz, in the ‘ Transactions of the Linnean 
Society,’ vol. xxiv. p. 441, came to my hands; and I have there- 
fore scarcely been able to refer to it, except so far, that I have 
substituted the name proposed by Mr. Haliday for the one I 
had myself intended for this remarkable animal. With regard 
to Mr. Haliday’s figures, I would observe that the principal figure 
seems to have been made after a dried specimen, while mine 
had fortunately been preserved in spirit and thus retained their 
natural elegance of form. I also differ from Mr. Haliday in the 
interpretation of the organs of the mouth. What he considers 
to be labial palpi, I believe to be maxillary palpi; what he de- 
scribes as labium (fig. 2) are, in my opinion, the maxille (with- 
out the inner lobes) together with the paraglossz (but without 
the lingua). Mr. Haliday’s maxille are, in my opinion, merely 
the interior maxillary lobes ; and fig. ¢ I suppose to be a part of 
