60 



bulletin: museum of comparative zoology. 



Tryphon senex, sp. nov. (Fig. 44.) 



Sex? Length about 6 mm. Apparently entirely dark colored, the legs and 

 the apical part of the abdomen, lighter, yellowish, but this may be due to un- 

 natural stains as the rock is strongly yellow. Antennae rather stout, the 

 apical part not preserved; joints, even toward the base of the flagellum, 

 quadrate. Surface of head nearly smooth but opaque. Pleurae and metano- 

 tum highly polished ; propleurae roughly striated or fluted along the posterior 



margin, the epomial cari- 

 na distinct. Metanotum 

 more or less transversely 

 wrinkled; areola ted, — ap- 

 parently completely so. 

 Abdomen subsessile, the 

 first segment with a pair 

 of widely separated discal 

 carinae that extend to the 

 tip and a lateral carina 

 which also extends to the 

 tip ; second and third seg- 

 ments subequal, each as 

 long as the first, without 

 grooves or carinae. Legs moderately stout. Wings hyaline, with brown 

 stigma and veins. Stigma rather broad, almost subtriangular in form ; radial 

 cell short and broad, only twice as long as wide; first section of the radius 

 nearly one-half as long as the second; cubitodiscoidal cell very short; median 

 and submedian cells of equal length ; first recurrent nervure broken consider- 

 ably below the middle; areolet indicated, but the external vein is nearly 

 hyaline. 



Described from one specimen from Professor Cockerell, No. A62. 

 Type in the Amer. Mns. Nat. Hist. 



Fig. 44. — Tryphon senex, sp. nov. Type. 



Tryphon peregrinus, sp. nov. (Fig. 45.) 



Female. Length 7 mm. Color not well preserved; probably dark, with 

 the abdomen and legs more or less brownish or reddish. Antennae not pre- 

 served. Thorax smooth, the pleurae more or less aciculate, particularly the 

 propleurae and the mesopleurae above. Metanotum apparently completely 

 areolated, but the carinae are not so prominent as usual. Basally it is smooth, 

 but apically more or less rugose. Abdomen rather distinctly petiolate, the 

 spiracles not visible in the specimen. Second segment as long as the petiole, 

 and seen from the side it is enlarged toward the apex which is nearly twice as 

 high as the base; following segments gradually decreasing in length. Legs 



