Mr. E. E. Austen on Cutiterebra. 153 
“ Essay &e.,” which was kindly forwarded to me by Prof. 
Poulton for inspection with the ‘ Addenda 1848,” I found 
that it has coloured plates, but that these correspond to the 
uncoloured ones in the British Museum copies, 7. e. they 
possess the extra figures. In other respects the three copies 
of the ‘‘ Essay &c.” before me appear to be identical, and 
there is no reference to the extra figures in any one of them. 
Fig. 40, pl. 1., however, is referred to in Trans. Linn. Soc. 
xix. p. 92 (1845), and in the “ Note &c.”’ in the “ Addenda 
1848,” and the references show that the figure in question is 
intended to represent Pharyngomyia picta, Me. When 
writing my former paper I did not realize what fig. 23, pl. ii., 
in the uncoloured Museum copy was meant for; but on seeing 
the coloured figure in the Oxford copy I sat once saw that it 
must be intended for Cutiterebra fontinella, Clk. This con- 
clusion is confirmed by the reference on p. 88 of Trans. Linn. 
Soc. xix., quoted above, which I have recently come across ; 
the passage in question i$ as follows :—“'The above species 
described by Pallas [i. e. Gstrus leporinus, Pall.] is very 
nearly allied to, or the same with, my C. fontanella (sic), 
described in the Linnean T’ransactions, vol. xv. p. 410, and 
figured in my Treatise [¢. e. ‘ Essay &c.’}, pl. il. fig. 23.” * 
The figure places the specific identity of the three specimens 
in the British Museum collection, which I mentioned in my 
former paper, beyond doubt. ‘The entire insect is shown in 
profile, with four visible segments iu the abdomen, of which 
the last alone is yellowish white. Since the first abdominal 
segment in Cutiterebra, as in other genera of Cistride, is 
concealed by the scutellum, and practically invisible, the 
abdomen appears to be composed of only four segments, so 
that the last segment visible from above, which is apparently 
the fourth, is really the fifth. Clark’s figure, by showing 
the first three segments of the abdomen purplish, and 
only the last segment yellowish white, therefore makes it 
clear that in writing “ segmentis duobus postremis hirtis ”’ 
(which was my only reason for doubting that our specimens 
were really fontinella) the author either made a slip or else 
meant to refer to the small sixth segment as well as to the 
fifth, the former of which, though concealed beneath the 
latter, is actually also clothed with pale golden-yellowish pile, 
The discovery of the reference on p. 88 of Trans. Linn. Soe. 
xix. to fig. 23, pl. il. of the “ Essay &c.” therefore proves 
* Gstrus leporinus, Pall., which Brauer (‘ Monographie,’ pp. 145, 146) 
doubtfully assigns to the genus Qistromyia, is a species from the Altai 
Mountains, which is at once proved by its mouth-parts to be in no way 
related to Cutiterebra. 
