84 
REVIEWS. 
distinguished from Dasypogon by the different structure of the antennae, 
better than by the very illusory character taken from the direction of the 
proboscis. 
Laphria, —The green colour of the eyes is one of the most striking 
distinctions of this genus. We have already noticed the correct number 
of abdominal segments in this and the following genera. 
Asilus, —The description of the ovipositor in the females is inaccurate, 
as well as the statement that the middle stripe of the thorax is shortened 
in front. 
Dasypogon, by an oversight, is characterized as having “ areola dis- 
coidalis apertait should have been mediastina , agreeable to the Eng¬ 
lish text. 
Dioctria. —The sides of the abdomen are said to be sometimes marked 
with yellow; this is not strictly true; in the females only, the yellowish 
connecting membrane between the dorsal and ventral half-rings sometimes 
becomes visible, in consequence of the enlargement of the ovaries. The 
character “ front broad in both sexes” should be left out, as belonging to 
the family at large. 
Leptogaster. —The phrase “ antennae articulo tertio longo” gives a very 
erroneous notion of the structure; that joint in the present genus being 
shorter than in any of the other indigenous genera. The style is said to 
be hairy, while, in fact, it has only a very inconspicuous pubescence in L. 
cylindricus , the only British species; and this would have been better 
unnoticed, as it is by no means universal in the genus. 
Leptis. —The characters derived from the form of the epistoma are 
mostly common to all the genera. So also the presence of three ocelli, 
and of spurs to the tibiae, and the structure of the thorax described, all 
belong to the family character. In the English text the third joint of the 
antennae is erroneously termed transverse, a character which applies only 
to Atherix and Ptiolina. The unmeaning phrase a antennae seated 
in the middle of the front” occurs again here, and in the descriptions of 
the following genera. 
Chrysopilus. —The epistoma is erroneously described as convex: in 
this, as in the preceding genus, it is impressed with two deep and broad 
furrows, and it is only the small intermediate space between these that is 
convex; the structure being thus absolutely the same as in Leptis , while 
the description would suggest a marked difference between the two. 
Atherix. —The epistoma is termed “not prominent,” a phrase which 
conveys nothing positive. 
