1940] 
A New Species of Haliplus 
59 
Metasternum: Smooth at middle; margined with a very 
fine bead between the middle coxae; on either side behind 
the middle coxae, a group of more or less confluent large 
punctures, appearing at first glance to form a depression 
in the position of the furrows in longulus. 
Abdomen: Ventral surface strongly alutaceous through- 
out. 
Claws: Practically equal in length on the front tarsi. 
Allotype $ : Post-medial sutural blotch somewhat larger 
than in the holotype. Also, as indicated above, surface of 
elytra extremely minutely punctulate and alutaceous. Front 
and middle tarsi with the usual pubescence on the under- 
side of the first three tarsal segments. Claws of the an- 
terior tarsi nearly equal, the anterior slightly shorter and 
more curved. Ventral surface of the abdomen alutaceous 
at sides except for the last segment which is alutaceous 
throughout. 
The genitalia are as shown. The left paramere with 
hairs rather sparsely placed along nearly the entire length 
of the side. The sedeagus evenly curved, not narrowed 
apically as in longulus. 
The $ holotype is in the Fall collection at the Museum 
of Comparative Zoology at Cambridge as well as one $ 
and one $ paratype. The $ allotype is in the collection of 
Mr. J. B. Wallis while three paratypes, two $ and one $ 
are in the author’s collection. 
Of the Haliplidse with basal pronotal plicae, this new 
species most closely resembles H. longulus. It is like longulus 
in the length of the plicae, in the width of the side margins 
of the pronotum, in the fact that usually the edge of the 
pronotum is continuous with that of the elytra, and in the 
lack of a channel on the prosternal process. 
It differs from longulus, in that the head is wider, the 
apex of the pronotum is wider compared with the base of 
the pronotum, the body is more narrow and parallel, the 
surface of the elytra is definitely alutaceous in the $ and 
extremely minutely punctulate and alutaceous in the $ 
and therefore not shiny, the metasternum has a fine marginal 
bead between the middle coxse, and the claws of the front 
tarsi of the $ are less differentiate than in longulus. 
All specimens examined were from Churchill, Manitoba. 
