24 PROCEEDINGS OF THE NATIOiSTAL MUSEUM. vol.64 



strong. Mesanotum blackish, the sides yellow, pleurae and pectus 

 piceous, a little paler about the posterior coxae; four scutellars, sides 

 of metanotum yellowish, Abdomen entirely black except the clasp- 

 ers, hypopygium globose, valves rounded trapezoidal, hairy. Legs 

 mostly yellow, a spot above front knees, the front tibiae and first two 

 joints of front tarsi black, postero-flexor bristles of anterior femora 

 strong. Hal teres white; wings grayish hyaline, smoky on apical 

 two-fifths except along hind margin, third and fifth veins clouded 

 near their respective crossveins, sections of costa proportioned 

 7 : 2 : 1, of fourth vein 5 : 4 : 17, of fifth vein 6 : 5, first posterior cell 

 widest just beyond middle. Length 3^ mm. 



Female. — Front, face, cheeks, mouthparts and antennae yellow, 

 upper occiput and ocellar region piceous, antennae tipped|with a 

 dark spot; vibrissae less firm and more curved. Notum mostly 

 rufous, a black stripe just external to dorsocentral rows, the two 

 connected in front, extreme sides yellow, lower pleurae yellow, 

 middle pleurae rufous, a subsutural black stripe. Abdomen black, 

 the ovipositor yellow. Legs yellow, front tibiae and front metatarsus 

 black. 



Distribution. — Numerous specimens, all collected by R. C. Shan- 

 non, on Plummer Island, Md., Dead Run, Va., and Labrador Lake, 

 N. y., bearing dates from May 14 to September 19; also^from Wau- 

 bamic, Ont. (H. S. Parish) , and Ottawa. Described by Malloch from 

 Maine, New Hampshire, Vermont, Massachusetts, and Maryland. 



The many specimens show much intergrading variation in color. 

 The description of the male is based on the form described^by Malloch 

 as nigripalpis; that of the female is based on the iovrc^johnsoni. In 

 one male a second pair of oral vibrissae is developed as is commonly 

 the case in melanostoma. 



34. CLUSIODES (COLUMBIELLA) VERTICAUS Collin. 



lleteroneura verticalis Collin, Ent. Mag., vol. 48, p. 107 (1912). 



Resembling albimana, normally two fronto-orbitals, post-verticals 

 lacking. Thorax of female less extensivel}'" darkened than a male, 

 hypopygial lamellae flattened, broad at base, then rapidly narrowing 

 and again gradually broadening out to the rounded tip, where on the 

 lower inner side they bear a cluster of black spines, the lower margin 

 ciliate with long hairs. 



Habitat. — England. 



7. Genus CZERNYOLA Bezzi. 



Czernyola Bezzi, Wien. ent. Ztg., vol. 26, p. 52 (1907). 



Craspedochaeta Czerny, Wien. ent Ztg., vol. 22, p. 103 (1903). — Kertesz, Ann. 

 Mus. Nat. Hung., vol. 1, p. 569 (1903). 



Lunule covered; three or four reclinate fronto-orbitals, cruciate 

 bristles present and located on the orbits between the second and 



