218 Scudder — Fossil Insects of North America. 



combining peculiarities both of Neuroptera proper and of Pseiido- 

 neuroptera. I subsequently came to similar conclusions concerning 

 some of the Devonian insects and the Haplophlehiiim from the Car- 

 boniferous rocks of Cape Breton. In the case of Miamia and Beme- 

 ristia, I have ventured to define and name the families to which they 

 belong, calling them respectively Falceoplerina and Hemeristina. 

 From the remains of the body we may judge that the habits of 

 Palceopterina were similar to those of Sialina. 



Kemains of two other animals, found in the ironstone concretions 

 at Morris, have been described by Messrs. Meek and Worthen.- 

 One form was considered a Myriapod ; the other, the woolly cater- 

 pillar of a moth. If the latter were truly a caterpillar, it must have 

 belonged to one of the higher families {Arctiadce), and the discovery 

 would be one of the most interesting facts in the recent history of 

 fossil embryology. It must be confessed that the resemblance of 

 Palceocampa anthrax to a caterpillar is very striking, but, judging 

 from the descriptions and figures, I am inclined to refer both of these 

 imperfectly preserved remains to the class of worms. The hinder 

 half of the body of the so-called myriapod {AntJiracerpes typus) 

 tapers to a point, and the extremity, which is furnished with a few 

 setae, bears little resemblance to the form of myriapod. Neither 

 head nor legs are represented on the plate. 



Passing upwards, we have next, in the Triassic rocks of the 

 Connecticut Eiver, some questionable tracks, referred by Hitchcock 

 to insects and myriapods : little attention has yet been paid to them. 



Eemains of insects, which I believe to be larvae of Coieoptera, 

 have been found in slates similar to those in which the fossil fish of 

 the Connecticut Eiver occur ; but Professor Marsh informs me that 

 the two remains have never been found directly associated with 

 each other. Professor Hitchcock has described and figured these 

 larvae under the name of Mormolucoides articulatus,'^ stating that 

 Professor Dana considered them neuropterous. Dr. Le Conte, 

 having examined the figures alone, expressed an opinion that the 

 animal was the larva of a neuropterous insect, belonging to the 

 family of EpliemeridcB. Dr. Hitchcock then desired the name to be 

 changed to Palepliemera mcedieva, by what just law of zoological 

 nomenclature I do not know. I shall, therefore, in writing, retain 

 the original name of Mormolucoides articidatus. 



Professor 0. C. Marsh has kindly lent me a slab containing from 

 twenty to thirty specimens of this insect, and I have examined 

 individuals in the Museum of the Boston Society of Natural History. 

 So few of the insects have a single segment of the body perfectly 

 preserved, that it is difficult to make out their real form ; enough 

 can be seen, however, to warrant the following statements and 

 descriptions : — 



The body is formed of fourteen segments ; the first two are rather 

 smaller than the others. The first segment is quadrangular, and 



^ Geological Survey of Illinois, vol. ii. p. 409-10, pi. 32, figs. 1, la, 3. Proc. 

 Acad. Nat. Sc. Pliilad., 1865, p. 51-3. 



2 Ichnology of Massachusetts, pp. 7, 8, pi. vii., figs. 3 and 4. 



