LARViE THAT FEED ON LOCUST-EGGS. 303 



whicb they occasionally fell into the water and instinctively adhered to 

 the backet. We quote his account : 



In the latter part of November, 1875, I found an occasional larva on the bucket of 

 ■water as I drew it from the well. At first I thought they were caterpillars ; but the 

 more I studied the less I could make any decision. One or two at a time were drawn 

 up occasionally till Christmas — that day I drew up forty or fifty at once. I supposed 

 I had secured all, but where they kept themselves I could not imagine ; for a few days 

 before I lost the bucket, and had to fish for it a long time. January 17 I drew up 

 several larvae, and a few days after two or three more came up. On January 25, 28, and 

 31, one or two were drawn up each day. February 2 I drew up two quite small ones; 

 and on the 13th a few more of the large ones came up. March G, some more of the fall 

 grown ; March 7, some about half grown ; March 31, some more larves ; Aiiril 1, some 

 more still; April 5, do. The well was frozen over quite hard several times during the 

 ■winter; in March the water came up to within three feet of the top. Now, what are 

 they? How have they lived, and where, during the winter ? 



I tried several times to keep some of them in a vessel of water, but they all died 

 within a few days each time. Please let me hear from you as soon as convenient, as I 

 am quite curious to know what they are. 



Telephorus bilineatus, Say.— Larva (Fig. 33, a). — Body 12-jointed, joint 1 longest, 

 4 shortest, the rest of about equal length ; flattened ; tapering slightly at each end ; 

 velvety ; of a rich deep brown above, pale below ; intersections deep and broadening 

 from sides to middle of dorsum ; two deep longitudinal lateral furrows, and two, less 

 deep, ventral ones; raedio-dorsal pale line continuous on the thoracic joints but show- 

 ing only on the sutures of the rest ; joints 2 and 3 each with a large sunken suboval 

 brown spot each side of dorsum ; these spots with a pale center; in a lino with these 

 on all the abdomiDal joints but last, is a more or less distinct, slightly sunken, pale 

 line, and still another parallel with it further out on the side. Between these pale 

 lines, on every joint but the last, is a slightly elevated, dark, bead-like tubercle which 

 might readily be taken for spiracles ; but these last, which are dark and quite small, are 

 placed on the anterior edge of the firsteight abdominal joints, in the upper lateral furrow, 

 and between the first two thoracic joints — there beicg nine pair in all ; anal joint with a 

 moderate proleg. Legs rather short, pilose, the tarsus terminating in a prominent and 

 sharp claw. A pale anal pseudopod. Head flattened, divided superiorly a little beyond 

 the middle by a transverse suture, the basal portion of an opaque, velvety, sooty- 

 black; the anterior portion polished, forming tliree well-defined lobes, with the ante- 

 rior edge irregularly broken ; eyes prominent, placed laterally immediately before the 

 occipital suture ; antennae inserted in a deep socket, 2-jointed, the second four times 

 as long as first, and bearing a small sUbjoint at tip; labrum not visible [Packard 

 describes it as '' broad and perfectly square in front, with a median notch dividing 

 the edgd into two slight lobes." As Walsh describes that of Chauliognaihus as being 

 retractile, it is probably retracted in my specimens, which are alcoholic] ; mandibles 

 falcate, with a strong tooth a little beyond the middle of the inner edge ; beneath, 

 the anterior edge is deeply and semi-circularly cut out ; 

 mentum extending between maxillss for two-tbirds their 

 length; masillaD large, projecting beyond labium, espe- 

 cially on the inside, where they seem to be produced into 

 a slight point ; maxillary palpi 3-jointed, the second twice 

 as loDg as the first, the third rudimentary ; labium small, 

 formed of a basal quadrate piece and two palpigerous 

 pieces that are soldered together ; labial palpi 2-jointed, 

 the second rudimentary. — \_Fourtli Mo. Eat. Bep. 



Asilid larvse. — We have on several occasions 

 foaud a large Dipterous larva (Fig. 35, c) prey- 

 ing upon the eggs of our locust, which larva we 

 recognized as that of Erax Bastardii which we 

 had reared in previous years. A specimen of riG.35.-ERAxBASTARDi1.-a. a v, 

 the same species received from Minnesota, where ^' ^"P"' '' '"'""• ^^'''' ^'"'^'^ 

 it was also found preying upon locust-eggs, was kept for some time by 

 Miss Emma A. Smith, of Peoria. We have, also, a larger larva of the 

 same family, and, doubtless, that of some true Asilus, which was found 



