ipS Natural History Bulletin. 



following — the stronger sculpture of the head, the apparently 

 stouter maxillffi, the longer second dorsal segment of the ab- 

 domen and the difference in the ventral scutes — the two mid- 

 dle plates of the Doctor's specimen coalescing to form one in 

 mine, the line of demarcation being sim.ply impressed. In his 

 figures these plates are divided by a considerable space. The 

 difference in locating the spiracles is due, I think, to a slip of 

 the pen, when, on page 39 of the work cited, the remaining 

 eight spiracles (after mentioning the mesothoracic one) are 

 said to be placed in segments 1-7 instead of 1-8. For the 

 sake of lessening the labor of students who may wish to com- 

 pare specimens for identification with both, I have modelled 

 my description after that of Dr. Horn, and where his words 

 applied to my insect have not changed them. 



The pupa, of which two views are given in the plate, is 

 remarkable chieflv for the great size of the head. The entire 

 length of the pupa is 16 mm., or excepting the protruding 

 hind tarsi, 15 mm. The palpi are very long and the sides 

 of the body, as well as the back, armed with numerous stout 

 bristles. Though nearly white at first, the eyes and jaws 

 soon darken. In fig. i", of the plate, the head is drawn a 

 trifle too small. 



Described from one of two specimens found under stones 

 on a damp hillside near Iowa City, August loth. They were 

 fed in captivity on snails [Patttla alter^iata)^ which they at- 

 tacked, devouring nearly the whole animal, pushing their 

 bodies into the shell until only the tips of the long caudal 

 processes could be seen. In a few^ days one of them died, 

 the other pupated August 19th or 20th and the perfect insect 

 appeared ten or eleven days later. 



Epipocus cinctus, Lcc. • 



Color of larva, blackish brov;n above, yellowish beneath, 

 both on the thorax and abdomen. 



Form sub-elongate rather depressed, the yOunger larvce 

 proportionately longer than those about to be transformed into 



