42 Mr. G. A. Boulenger on a 



Bab. Olympia, Washington State, July 2, 1896 (Trevor 

 Kincaid). 



Allied to E. interruptus, Rob., but basal joints of antennas 

 not red, legs with much more black, postscutellum without a 

 tooth, &c. 



Phileremus americanus, Cresson. 



Hal. Beulah, N. M., at flowers of Apocynum androscemi- 

 folium, July 8 [W. P. Cockerell). 



New to New Mexico. Cresson's description is not suffi- 

 ciently detailed, but I think my identification is certainly 

 correct. This species and P. mesillce, Ckll., are to all intents 

 and purposes Epeolus with two submarginal cells. I am 

 convinced that these insects stand nearer to Epeolus as restricted 

 by Robertson than that genus does to Triepeolus. 



The black band on the first abdominal segment is much 

 less produced laterally in P. americanus than in P. mesillce. 

 The fringes of erect hairs on the fourth and fifth ventral seg- 

 ments of P. mesillce are white. While P. americanus flies in 

 summer in the Canadian zone, P. mesilloz is a spring insect 

 of the Middle Sonoian ; a male before me was collected at 

 Mesilla Park, N. M., May 7, at flowers of Dithyrea Wislizenii. 

 It has the face densely covered with white hair. 



The female of P. mesillce has not been described ; but I 

 have a specimen (Ckll. 2810) collected at flowers of Sophia 

 at Mesilla Park. The abdomen is longer than in the 

 male, and the hind margins of the first four segments 

 are broadly orange, with a coppery lustre, and practically 

 hairless, though perhaps denuded. More than the apical 

 half of the fifth segment is orange, and the very distinct 

 white lunule is bordered behind by brown. The pygidial 

 plate is truncate. The knees, tibiae, and tarsi are all ferru- 

 ginous. The flagellum is ferruginous, darker above. The 

 disk of the mesothorax is dark brown, and the two light stripes 

 are very distinct ; in the male there are two very large light 

 patches on the anterior part of the mesothorax. 



III. — Description of a new Genus of Frogs of the Family 

 Dyscophidse. and List of the Genera and Species of that 

 Family. By G. A. Boulenger, F.R.S. 



[Plate II.] 



COLPOGLOSSUS. 



Pupil vertically elliptic. Tongue large, oval, entire and 

 free behind, forming a plicate pouch at the point of its poste- 



