CHARLES W. HOOKER. 131 



Tliyreodoii fernaldi n. sp.* 



Black ; antenncB orange-fulvous, face and legs more or less fulvo- 

 ferruginous ; abdomen with third and fourth segments, sometimes part 

 of the second and fifth segments, ferruginous ; wings fuliginous, with 

 basal two thirds of the anterior and a small spot on the posterior fulvous 

 or fulvo-fuscous. 



Length, 38-45 mm. ; wing, 24-29 mm. ; spread, 51-62 mm. ; an- 

 tennae, 22-29 mm. 



Black, clothed with fine short pubescence ; head and thorax closely 

 and finely punctate ; head black, more or less varied with fulvous or 

 ferruginous ; ocelli small, distant from the tops of the eyes; eyes large, 

 emarginate, antennal fossae deep ; antennae orange-fulvous, with the 

 scape sometimes fuscous to black ; clypeal foveae distinct ; clypeus 

 weakly pointed ; mandibles broad and stout. 



Thorax black ; metathorax opaque ; pleurae and pectus shining ; 

 mesonotum opaque or semi-opaque ; parapsidal furrows weak, double; 

 scutellum excavated in front, with strong lateral carinae connecting it 

 with the mesonotum ; metathorax finely reticulate, with short pubes- 

 ence, flat or very slightly hollowed behind. 



Wings fuliginous, with the basal two-thirds to the apex of the closed 

 cells of the anterior and a small spot in the median and radial cells of 

 the posterior fulvous or fulvo-fuscous ; nervulus antefurcal to intersti- 

 tial, in one specimen very slightly postfurcal ; nervellus broken well 

 above the middle. 



Legs more or less fulvo-ferruginous ; coxae, femora and feet often 

 black ; abdomen black, with the third and fourth and often part of the 

 second and fifth segments ferruginous, smooth and shining, with fine, 

 short, pubescence ; ovipositor reddish ; male claspers with outer two- 

 thirds narrowed ; apex pointed. 



Described from three 9 and one c? cotypes. 



Cotypes. — 9 and (f. Mexico, U. S. National Museum; 

 9 , Arizona, American Entomological Society ; 9 , Colorado, 

 Brooklyn, Museum. 



This species is related to T. jnorio and its subspecies tra7i- 

 sitionalis as well as to T. laticinctus and zonatus. It is, how- 

 ever, larger than morio, with the abdomen more slender, and 

 may be readily recognized by the fulvo-hyaline spot on the 

 wings and the ferruginous band on the abdomen. Both of 

 these vary somewhat in extent but seem to be characteristic. 



Distribution. — Colorado; Arizona; Mexico. 



This species apparently ranges through the mountainous 



* Named in honor of Dr. H. T. Fernald. 



TRANS. AM. ENT. SOC, XXXVIII. 



