484 CONNECTICUT GJ:OL. AND NAT. HIST. SURVEY [lillll, 



base and costal border stroiiirly yellowish: a narrow brown seam along 

 veins C'u, vi-cu and basal section of i)/,! + 4. ?. L. 4-5 nnn.; w. 5-0 

 mm. 



The male sex has not been discovered. See note under M. hirti- 

 penriis. 



(Aug., Sept.) N. B., Ale., westw. to Mich, and Alta. 



4. Subtril)e Toxokhinaria 



Toxorhina Loew 



1S51. To.vorhina Loew; Linnaea EntomoL, 5:400. 



1S61>. To.vorrhina Osten Sacken; Mon. Dipt. N. Amer., 4: 100-114. 



A moderate-sized group of very peculiar and isolated crane-flies, 

 readily told by the reduced radial venation (Fig. 50, M), the elongate 

 rostrum with mouth parts at extreme tip. and the profoundly bifid 

 setae on legs. Other ])eculiai- features lie in the uniting of certain of 

 the basal flagellar segments into a conical ''fusion-segment"', the pres- 

 ence of very long setae on the outer flagellar segments, and the greatly 

 lengthened cervical region, with the anterior portion of the praescutum 

 l)roduced cephalad over its base. The resend)lance to Eleph'intoniyia 

 appears to be merely superficial. The adult flies of our northern s]>e- 

 cies, ?)iuliehris, may ])e swe))t from vegetation in boggy areas. The 

 early stages remain undiscovered. 



Key to Species 



1. L't'll 1st Mj. closed; body-coloration brownish yellow to brown; average size 



large {$ , L. 7 mm. or more ) magna 



Cell 1st Mj. open by the atrophy of m, closed only in abnormal specimens 

 (Fig. 50, M) ; body-coloration gray to brownish gray; average size smaller 

 {$ , L. 6 mm. or less) muliebris 



Toxorhina {Toxorhina) magna (O. S.) 



1<S65. T o.i'orrhina magna Osten Sacken: l^roc. Phihidel|)hia Ent. Soc, 

 4 : 232. 



Figs. — Osten Sacken. Mon. Dipt. N. Amer., 4, pi. 1. fig. 6 (wing) ; 1869. Alex- 

 ander. Cfls. N. Y., 1. pi. ii, fig. 45 (ven.) ; 1919. 



Postnotum and ])leura more ])ruinose than notum. Legs chiefly 

 brown: ti[)s of tibiae narrowly dark brown or black. Abdomen 

 elongate, the segments pale brown, with darker brown incisures. 5. 

 L.. excluding rostrum, 7-10 mm.: w. 5.5-7.5 mm.; rostrum, 3-8.5 nnn. 

 ?. L.. excluding rostrum. 9-12 mm.; w. 5.5-8 mm.: rostrum, 3.5-4.5 

 mm. 



(Apr. -July; Sept. -Oct.) Mass. (Nantucket Is.); N. J., westw. to Mich.; southw. to 

 S. C, Ga., Fla. and La. (Austral, Transition). 



T. {ToQcoi'hiiia) muliebris (O. S.) (Figs. 50. M: 55, X). 

 1S(J5. ToxorrhiiHi iinilhhr'/s Osten Sacken: Proc. Philadelphia Ent. 

 Soc, 4 : 233. 



Figs.— Needham. 23rd Kept. N. Y. St. Ent. for 1907, pi. 29, fig. 5 (ven.) ; 1908. 



