596 PROCEEDINGS OF THE ACADEMY OF [Oct., 



The paratypes were collected by Miss Cordelia J. Stanwood, the 

 well-known student of bird-life, in whose honor the species is named. 

 Miss Stanwood has done much to discover the craneflies in the 

 vicinity of her home city, and as a result of her careful observations 

 our knowledge of the Hancock Co. Tipulidse is remarkably com- 

 plete and constitutes one of the most valuable lists of a restricted 

 locality that has ever been secured. 

 Limnophila osborni sp. n. 



Belongs to the quadrata Osten Sacken group; mesonotum rich 

 brown; pleurse with a conspicuous black dorsal stripe; wings with a 

 brown tinge; cross-vein r at the fork of Ri+z; Rs long, cell Mi absent. 



Male, length, 6.3-6.5 mm.; wing, 7.4-7.5 mm. 



Rostrum a little reddish yellow, palpi and antennse dark brownish 

 black. Head dark brownish black. 



Mesonotal prsescutum rich yellowish brown with a very narrow 

 black line on either side of the broad median space, a deep black 

 spot on the anterior margin of the prsescutum continued foreward 

 onto the pronotal sclerites, lateral stripes not clearly indicated; 

 scutum yellowish brown with a darker brown suffusion on each 

 lobe; scutellum dull yellow; postnotum clear light gray. Pleurse 

 pale yellowish with a broad deep black stripe extending from the 

 cervical sclerites across the dorsal pleural sclerites to the abdomen; 

 the pleurse adjoining this broad conspicuous stripe very narrowly 

 gray pruinose; sternal sclerites pale dull yellow. Halteres rather 

 long, pale, the knob elongate, dark. Legs, coxse and trochanters 

 pale yellow, 'femora brownish yellow, the tip darker, tibise and tarsi 

 dark brown. Wings with a brown tinge, veins dark brown; A^ena- 

 tion (PI. XXV, fig. 6) : cross-vein r at the fork of R0+3. 



Abdominal tergites shining black; sternites dark brownish black; 

 basal sternites with some yellow; hypopygium reddish brown. 



The paratype from Phair, Me., shows the mesonotal prsescutum 

 very dark brown medially, a little lighter behind, lobes of the scutum 

 shiny black. 



Holotype, o^, Phair, Aroostook Co., Me., August 26, 1913 (Herbert 

 Osborn) . 



Paratypes, 1 d^ with the type; 2 cf from the Bangor Bog, near 

 Oroiio, Penobscot Co., Me., August 30, 1913 (Herbert Osborn). 



This interesting late summer member of the quadrata group is 

 named in honor of Dr. Herbert Osborn, who collected the type 

 material. 



A key to the species of the quadrata group in the eastern United 

 States. 



