Vol. XXlii] 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: $ 2 mm. Width: 1.50 mm. 



Type. $ and one cotype $ in my collection. 



Type locality. Goldfield, Esmeralda Co., Nev., June 10, 

 1908 (Nunenmacher). 



This species is an intermediate form between H. sinndans 

 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.; $ 1.25 mm. Width: $ 0.75 mm.; 9 i. mm. 



Type. $ $ 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. 



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 calcitrant} 

 has been announced by Prof. M. J. Rosenau of the Harvard Medical 

 School and C. T. Brucs 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. 



