91 



Since the occurrences narrated above, I have made many 

 inquiries about similar larva?, and, have only learned that Mr. 

 Sanborn found three or four larvae apparently identical with one 

 of the above, by the roadside between West Roxbury and Ded- 

 ham. The first he had seen were brought him in 1862, by E. 

 S. Rand, Jr., who found them in Dedham. 



The most abundant form of these larvae differs so little from 

 " the third species " of unknown larvre described by Osten- 

 Sacken in vol. i of the Proceedings of the Entomological Soci- 

 ety of Philadelphia, p. 129, that I think it sufficient only to 

 describe the differences. 



This is No. 3074 of my collection. It is 35 mm. long, elon- 

 gated, with the first five rings behind the small head success- 

 ively widening, the last three rings almost insensibly narrowing, 

 the last ring evenly rounded ; of a soft-leathery consistence. 

 Lateral margins of all the abdominal segments and sometimes of 

 the thoracic ones, the whole venter, and sometimes also the 

 front and hind margins of the thoracic segments yellowish. 

 Head retractile, -well exserted when in walking, transverse, 

 dilated medially behind, dark brown or almost black, sometimes 

 paler on the margins. Anterior margin of the head above 

 between the ba>es of the mandibles bisinuated, the forward 

 projections of the curve being lateral, and the hollow central 

 and broader. Below, directly over the mouth, the margin is 

 truncate, centrally notched. No separate clypeus or labrum 

 distinguishable. Third joint of antennas cylindrical, twice as 

 long a.:, broad, one-third as long as the second joint, with no 

 trace of a fourth joint in most cases. Mandibles strongly 

 curved, either one outermost. So-called " second appendage " 

 of the maxilhe indistinguishable. Third and fourth joints of 

 maxillary palpi usually at least as long as they are broad. 



Prothorax, when extended, as broad anteriorly as the head, 

 longitudinal, posteriorly twice as broad as the head. Mesotho- 

 rax and niuiathorax nearly equal in length, the latter a little 

 longer ; each shorter than prothorax. Punctuation of the tho- 

 rax almost none. Tips of coxa?, not very approximate, the pos- 

 terior ones less approximate. Hind legs not much larger than 

 the others and having about the same proportions. All the 



