295 [rackard. 



Fig. 2. Bomhufi fervidm. The second stage of the semi-pupa. 

 The hirval skin entirely sloughed off, the two pairs of wing pads 

 lying parallel, and very equal in size, like the wings of Neuroptera. 

 The thoraco-abdorainal ring or propodeura (e), with its oblong spiracle 

 («), essentially differing from those on the abdomen. At this point the 

 body contracts, but the head and thorax together are yet, as still 

 more in the previous stage, much smaller than in the pupa, and 

 there is still a continuous curve from the tip of the abdomen to the 

 head. g. antenna; h. lingua and maxillse and palpi; i. fore legs; j. 

 middle legs ; k. meso-scutum ; I. meso-scutellum ; m. meta-scutellum ; 

 71. spiracle of the propodeum. 



Fig. 3. Bomhus fervidus. The third stage of the semi-pupa. The 

 head and thorax together now nearly equal in size the abdomen, 

 the propodeum (c), has become entirely transferred to the thorax. 

 The head has become greatly enlarged ; the rings are very unequal, 

 the hinder pair are much smaller, and overlaid by the anterior pair; 

 the three terminal pair of abdominal rings so large in Fig. 2, have 

 been absorbed, and partially enclosed in the cavity of the abdomen ; 

 and there has been a further differentiation of the ring into the ster- 

 nite ((/), pleurite (e), and tergite (/). a. eye; h. lingua; o. oviposi- 

 tor, two outer rhabdites exposed to view. The abdominal spiracles 

 in Fig. 2 and 3, are represented by a row of dots. In the pupa (Fig. 

 4), they are concealed by the tergites. 



Fig. 4. Bomhus fervidus. The pupa state, where the body has 

 become much shorter, the appendages of the head and thorax greatly 

 differentiated; the external genital organs wholly retracted within 

 the cavity of the abdomen ; the head freer from the body, and the 

 whole bulk of the head and thorax together, including the appendages, 

 greater than that of the abdomen, c. the propodeum nearly con- 

 cealed in a side view ; p. labrum ; q. maxilla?, with the two-jointed 

 palpi at the extremity ; r. tip of the lingua. 



Dr. F. H. Brown remarked on a case of intra uterine am- 

 putation which had come under his notice. A boy of twelve 

 or fourteen years had one arm thus amputated at the middle 

 of the fore arm ; on the stump were three fingers, consisting 

 of three joints ; but the presence of the ulna and radius 

 could not be detected. 



Mr. F. W. Putnam exhibited a specimen of a malformed 

 eel which was found in Lynn, in a well which was left dry 

 during the drought of 1865. Its head was greatly shortened 

 and widened, and the eyes enormously develoj^ed ; while 



