546 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.44. 



side of the median line, and a broader one extending from behind 

 the pseudosuture back to the transverse suture. The venation 

 seems to be almost as variable as in the northern L. lenta Osten 

 Sacken. 



Habitat. — Holotype. — Male, Totonicipan, Guatemala, Central Ameri- 

 can, 1902 (G. Eisen). Allotype. — Female wdth the t5"pe. Paratypes. — • 

 Three males with the type. 



Type.— In U. S. National Museum collection (No. 14939). 



LIMNOPHILA CINERACEA PhUippl. 



Limnophila cmeracea Philippi, \'erh. Zool. Bot. Ges. Wien., vol. 15, 1865, p. 

 611.— HuNTEK, Trans. Amer. Ent. Soc. vol. 26, 1900, p. 292.— Kertesz, Cat. 

 Dipt., vol. 2, 1902, p. 228. 



Male. — Length, 6.5 mm.; wing, 7.6 mm. 



Head: rostrum black; antennae short, the segments rounded or 

 subglobular, black; front, vertex and occiput brown wdth a light 

 gray bloom; numerous long, scattered hau-s behind the eyes. 



Thorax: pronotum: scutum gray, strongly suffused with brown in 

 the middle; scuteUum gray, more brownish on the lateral margins; 

 mesonotum: praescutum pale brown with a light gray bloom, a more 

 or less distinct bro\vTi stripe along the middle, extending from the 

 transverse suture almost to the cephahc margin of the sclerite; 

 pseudo-suture black, comma-shaped; tuberculate pits not visible; 

 scutum, scuteUum and post-notum black, dusted with light grey; 

 pleurae dark, dusted uniformly with light gra^^ Halteres psJe 

 throughout. Legs: coxae gray; trochanters yello\\'ish- brown; femora 

 bro\v^l, more yellowish basaUy; tibiae and tarsi brown. 



Wings whitish, subh3'aline; veins brown; a very pale, ill-defined, 

 brown stigma. Venation: Sc. long, extending almost to the fork of 

 Rs.; cross vein r-m vcrj^ strongly arcuated. U-shaped; cell first Mj 

 long and narrow; deflection of M3 longer than the cross vein m; basal 

 deflection of Cu, in under cell first M,. 



Abdomen: tergum browai; lateral margins of the sclerites ])aler, 

 yellowish; hj^jopygium reildish brown. 



"Cliile," E. C. Reed, coll. 



Specimen in U. S. National Museum collection. 



The species belongs to the lenta group of the genus, in wliich cell 

 M, is entirely lacking. 



LIMNOPmLA GUTTCLATISSIMA. new species. 



Light brown, the thorax with darker spots; legs yellow; wings 

 subhyahne, with abundant brown dots. 



Male. — Length, 8.2 mm.; wing, 10 mm.; hind leg, femur, 7.5 mm.; 

 tibia, 8.4 mm.; tai-sus, 6.6 mm. 



Head: rostrum and palpi dark brownish-black; antennse, basal 

 segment black, remainder broken. Front and vertex gray with a 



