Vol. xxiii] ENTOMOLOGICAL NEWS 451 
a little more coarsely punctured than the head. Elytra, punctuation 
like pronotum but not so close. Ventral Surface, mesosternum and 
metasternum with large, coarse, rounded, deep punctures; the ventral 
punctures the same but about half the size. 
Length: 6 2mm. Width: 1.50 mm. 
Type. é and one cotype ¢ in my collection. 
Type locality—Goldfield, Esmeralda Co., Nev., June Io, 
1908 (Nunenmacher). 
This species is an intermediate form between H. simulans 
Casey and H. ploribunda Nun. It was taken on the Monte- 
zuma Mountains (6000 to 7000 ft. alt.), on sage brush. 
Scymnillus cochisiensis n. sp. 
Color, shining black throughout. Form, broadly oval, convex. 
Head, coarsely and thickly punctured and pubescent, the latter very 
short. Pronotum, not as coarsely punctured as the head, the punc- 
tures a little coarser and closer at sides, the pubescence confined to 
the sides and a narrow margin in front. Elytra, finely but not closely 
punctured. Ventral Surface, finely and closely punctured, becoming 
coarser at sides, 
Length: $ 1.05 mm.; @2 1.25 mm. Width: $ 0.75 mm.; 9 I. mm. 
Type—é @ and eighteen cotypes in my collection. 
Type locality—Benson, Cochise Co., Ariz., October 4, 1906 
(Nunenmacher). 
In this species, the metacoxal line curves to meet the first 
ventral suture, but does not quite reach it; it passes obliquely 
and joins the posterior angle of the first ventral suture. 
I wish to express my thanks to my friend, Dr. E. C. Van 
Dyke, of San Francisco, for advice and criticism during the 
preparation of this paper. 
EN ee 
Infantile Paralysis Transmitted by the Stable Fly. (Dipt.). 
The successful transmission of infantile paralysis in monkeys 
through the bite of the blood-sucking stable fly (Stomoxys calcitrans) 
has been announced by Prof. M. J. Rosenau of the Harvard Medical 
School and C. T. Brues of the Bussey Institution, Harvard Univer- 
sity, and their results have been confirmed by Dr. J. F. Anderson of 
the Public Health and Marine-Hospital Service. 
The hypothesis advanced last year by Brues and Sheppard that the 
stable fly is the carrier of this disease has thus been given experimental 
proof, although it is still possible that other channels of infection may 
exist. With the exception of the investigations of Dr. Anderson, the 
work was done under the auspices of the Massachusetts State Board 
of Health. 
