8 



Phalangopsls-like Orthopteron was also an inhabitant of tlie cave ; 

 and though subsequent mention, in similar connections, has been 

 made by Thompson, Agassiz, Schiddte, and Fischer, no further 

 account has been given of it than that it resembled the P. longipes of 

 Serville. 



Having been lately favored with specimens of tAvo species, col- 

 lected in different Kentucky caves, by Mr. Alpheus Hyatt, and of 

 one of them by my brother in the Mammoth Cave, and having also 

 had the opportunity given me of examining numerous specimens of 

 both in the Museum of Comparative Zoology in Cambridge, I take 

 this opportunity to give a more exact account of them than has 

 hitherto been done. I am indebted to my brother and to ]Mr. Hyatt 

 for the information I have given respecting their habits. 



Raphidopliora suhterranea., nov. sp. 



Fuscous *, under surface of body, the head except vertex, both pair 

 of palpi except extremities, coxse, under side of femora, terminal 

 third of tibiae, and the tarsi except the under edge and ex- 

 tremities, paler ; some faint reddish-brown spots on upper surface of 

 thoracic segments. A much depressed, scarcely perceptible carina 

 along the dorsum. All the appendages densely covered with short, 

 fine, microscopic hairs. 



Antennae dark brown at base, becoming paler toward the tip; 

 first joint stout, somewhat flattened anteriorly, obliquely truncated 

 interiorly at the base ; second joint half as long and as broad as first, 

 compressed anteriorly ; third cylindrical, as long as first, at base of 

 the same, breadth as second, but narrowing rapidly, tliough but 

 slightly ; remainder of unequal length, but averaging, at first, half the 

 length of the third joint, slowly diminishing in size, so that the whole 

 tapers very gradually to the very delicate extremity. Tij) of the last 

 joint of the maxillary palpus with a slight excavation interiorly. 

 Eyes black, subovate, subglobose. 



Four anterior coxse carinated externally, the carina of the two 

 anterior being produced into a central spine. A double row of dis- 

 tant, alternate, short spines on under side of the four anterior tibiae, 

 with two upon either side at the extremity, of which the lower is 

 largest, embracing the base of the tarsi ; posterior tibise with a double 

 row of minute sharp spines, extending nearly the whole length of the 

 hinder portion, raised at a very small angle, interrupted by longer, 

 distant, and alternate ones, elevated to a higher angle ; upon the 

 anterior lower third are two approximate rows of distant spines ; 

 three spines at the extremity upon either side, embracing the first 

 johit of the tarsi, the first and third of a nearly equal size and 

 appearance to the larger tibial spines, while the second is three times 



* The colors of both species are described from specimens dried after a long im- 

 mersion in alcohol. 



