28 INSECUTOR INSCITI^ MENSTRUUS 



Named in honor of Mr. N. P. Scudder, of the National Mu- 

 seum Library, who collected the first specimen. 



Through the kindness of Dr. B. H. Ransom, Chief of the 

 Zoological Laboratory, Bureau of Animal Industry, U. S. De- 

 partment of Agriculture^, I have had the opportunity to examine 

 two third-stage larvae, taken from the throat of hogs, which I 

 am able, by comparison with puparia, to identify as this spe- 

 cies. The entire, strong, sharply-pointed, thorn-like spines of 

 these larvae are distinctive of the rabbit hots of this group. The 

 material is as follows : 



B. A. L Parasite Coll. No. 15614. — One specimen in situ in 

 larynx of hog, Blacksburg, Virginia, collected by N. S. Mayo, 

 July 22, 1910. The larva had embedded itself longitudinally in 

 the wall of the larynx, on one side, even with the vocal chords. 



B. A. L Par. Coll. No. 18026. — One specimen from "larynx 

 or pharynx" of hog, Birchwood, Tennessee, collected by B. J. 

 Amerson, July, 1915. 



In the first case above, the larva was uninjured and had 

 evidently reached its location through its own locomotory ef- 

 forts, by working its way from the pharynx, mouth, or gullet. 

 It is a question whether the hog in this case, in rooting among 

 rabbit burrows, ingested the egg from which proceeded this 

 larva ; or whether it ate the rabbit host containing this larva in 

 the third stage, without incapacitating the latter, which was 

 saved from being swallowed by its sharp spines and was after- 

 wards able to make its way into the larynx. In the second case 

 above, the larva appeared to have been injured by the teeth of 

 the hog, indicating that the latter had ingested it either free or 

 in situ in the rabbit host, but was unable to swallow it by 

 reason of its very sharp spines piercing the CEsophageal or 

 pharyngeal membranes. 



SOME INTERESTING ORTHOPTERA FROM 

 MEXICO 



By a. N. CAUDELL 

 Among a small lot of Orthoptera recently sent in for deter- 

 mination by Mr. Roberto Miiller from Presidio, Mexico, were 



