Mnrcli— April iSS.i. | 



PSYCHE. 



■27 



moving the air, in the brown scales. In gitiulinal striae toward the middle of the 

 the white scales the bands usually start scale (see fig. 7, /> and r) ; exception- 

 out from or beneath the marginal longi- ally, however, they begin beneath one 

 tudinal stria of the upper side of the of the other longitudinal striae, 

 scale, and extend beneath the other Ion- {To be contimird.) 



HOMINIVOROUS 



HABITS OF LUCILIA MACELLARIA. 

 "THE SCREW-WORM." 



BY FRAXCIS miXTINGTOX SNOW, LAWRENCE. KANSAS. 



I have from time to time had occa- 

 sion to note the depredations of the 

 screw-worm upon horses and cattle in 

 this state, but until recently have not 

 received positive evidence of its attacks 

 upon human subjects in an)' localitv so 

 far north as Kansas. But early in Sep- 

 tember, iSSj, I received from Mr. S. 

 D. Osborn, the postmaster at Varck, 

 in Southeastern Kansas, specimens "of 

 the worms which came from the nos- 

 trils of Milton Carter." These proved 

 to be the larvae of Lite ilia 7nac(;llaria 

 Fab., the so-called "screw-worm." 

 Upon further inquiry I learned that 

 upwards of one hundred full-grown 

 maggots escaped from the nose of this 

 patient, who finally recovered from the 

 serious illness consequent upon their 

 ravages. I also ascertained that Mr. 

 Carter had long been afflicted with an 

 offensive nasal catarrh, which made 

 his nostrils an attractive place for the 

 oviposition of the fly, and that he had 

 fallen asleep in the woods in the day- 

 time only a few days before the first 

 appearance of the symptoms produced 

 by the presence of the larvae. 



.Several other instances of the attacks 

 of Litcilia upon man soon came to 

 mv knowledge, most of which led 

 to fatal results. Among these I will 

 select the case attended by Dr. J. B. 

 Britton, of Mapleton, in southeastern 

 Kansas, who reported it in full at the 

 session of the Southeast Kansas District 

 Medical Society, in January, 1S83. 

 From this report I condense the follow- 

 ing account : " On the evening of Au- 

 gust 22d, 1S82, Mr. M. E. Hudson 

 complained of a peculiar sensation at 

 the base of the nose and along the 

 orbital processes, which was first fol- 

 lowed by inordinate sneezing, and later 

 by a most excruciating pain over the 

 OS frontis, also invoh'ing the left supe- 

 rior maxillary. This patient also had 

 sutlered, and was still suffering, from 

 an aggravated form of nasal catarrh. 

 The discharge was quite purulent, of 

 a yellowish color frequently tinged with 

 blood, with a disagreeable odor and 

 at times intolerably offensive. On the 

 24th there was a profuse discharge of 

 much purulent matter from the nostril 

 anil mouth, when all pain instantly 



