81 183 
DESCRIPTION OF A NEW SPECIES OF THYAMIS. 
BY E. C. BTE. 
Amongst a series of most of the then known British Halticidce, sent 
November, 1863, by Mr. G. E. "Waterhouse to Herr Kutschera of 
enna (and recently returned with certain remarks, of which a notice 
m the pen of the former gentleman will appear in our next Number), 
8 an example of a large species of Thyamis, taken, as far as I am 
are, only by myself,* — which Herr Kutschera considers to be distinct 
i undescribed. I, accordingly, characterize it as follows : — 
Thtamis agilis, n. s, 
Alata, ovata, convexa, nitida ; luride testacea, oculis nigris, sub- 
tus picea, antennariim femorumque posUcorum late apicibus piceis ; 
thorace evidenter punctulato ; elytris confuse, satfortiter, minus con- 
fertim punctatis, humeris vix prominuUs, opice singulatim sub-rotun- 
datis ; tibiis posticis calcari brevissimo, crassiusculo, instructis. 
Var. capite elytrorumque suturdvel rufescentibus vel picescentibus, 
tibiarum tarsorumque apicibus picescentibus. 
Long. Corp. 1^ — 1^ lin. (Anglic). 
I captured about a dozen specimens of this conspicuous insect in 
ptember, 1863, by sweeping in Headley Lane, Mickleham ; but have 
jsequently only found one other example, in the same place. 
It is about the size of T. jacobcece, Waterhouse (tabida, Auct.), 
ich, however, it exceeds in comparative width ; but it is most closely 
led to T. tabida, Fab., Waterh. (verbasci, Auct.), which it resembles 
•y much in appearance and structure. Compared with that insect, 
:s considerably smaller, the largest example of it being rather less 
m the smallest verhasci ; its colour is not so light ; its thorax is more 
dently and its elytra more strongly and less closely punctured ; the 
:ond and third joints of its antennae are equal in length, instead of 
! third being rather longer than the second ; and the spur terminating 
) posterior tibiae is very much shorter and scarcely perceptibly curved. 
The smallest examples, which are about equivalent in size to large 
jcimens of T. melanocephala, may readily be known from that species 
their less defined colouration, wider and less acuminate elytra — 
ich are more shining, owing to their wider punctuation — stouter an- 
mse, light posterior tibiae, &c. 
The testaceous Halticidce are so liable to get discoloured after 
ith, that it is extremely diflBcult to define their exact tints. The 
htest in colour of my specimens has the five apical joints of the an- 
* Dr. Power appears to have two very old specimens of this insect in his collection, taken at " Gog 
!0g,' Cambridge. One of my Mioklehara examples, given to him by me, has been sent by him to M. 
ird, who has returned it as verbasci, var., liaviiif; apparently failed to perceive the structural ditTer- 
3S between the two insects. — E. C. R. 
