284 I'.MM) t'l.'AVI'ISIII'.S OF IM>i\\A IIAV. 



with tlu' hand and thru >ii(hU'iily sr'i/.v tht'iii. W'hrii oner touched 

 they started oil" in {ireat liaste for some protecting" rock, but often in 

 their ahirni would dart out upon the hank where they would lie unable 

 to ^et back to the watt'i'. They did not appear to be at all sensitive to 

 the li«»ht, 1 ha\e (d'tcu tried the experinieiit of slowly passing; my 

 candle back and fi)rth a few inches above them, or of suddenly remov- 

 ing: tlie liiiht and then brinyin^' it close aji'aiu, but with no etl'ect what- 

 ever. 



Noise has no etVeet: a loud call or a sliriil whistle they do not notice. 

 Nor does disturbing- the wateis seem to alfeet them, and it is only when 

 they are toin-hed that they manifest fear. 



The lariier of these era\tish«'s could intliet a |>retty severe nip with 

 their pinchers, but they did not appear to be so strong' in this regard as 

 the outside species. 



When lirst taktai from the water they were of a tiansliu'cnt itinkish 

 white color with the stomach showing' throuuh as a blue body, but 

 innncrsion in alcohol soon chani^cd the color to an opa(pn' white and 

 obscured all traces of the inteiiial oryans. 



At my liist visit to Shiloh Cave I obtained sixteen specimens and on 

 the second visit thirty- live. 



I was unable to lind more specimens of the blind crayfish until I 

 reached l'a(di in Orange County, Near this town I visited a small cave 

 and obtained two specim«'ns. At Or.mi^i'ville, a little north of Paoli, 

 they are said to l)e (piite common in Lostlfi\'er. At Marengo Cave the 

 guide intbrmed me that a few specimens had been obtained. At Wyan- 

 dt>tte C-aA'c they are said to be, at some seasons of the year, (piite com- 

 mon, but at the time of my \ isil I secured only (uu' small s|)ecimen. 

 However, in a small unnamed cax'c, about on<^Tourth of a mile distant 

 from the main cave, T obtained three line specimens and observed an- 

 other, which managed to escape. 1 was intbrmed that they were abun- 

 dant in otln'r cav«'s in the \ icinity. 



Alter reaching liiune, a careful examination of the collection brought 

 out the following facts — 



Of thirty spccim«'ns fiom Shiloh Cave, lonrteen were nmles and six- 

 teen females. It needed \(m>- little exannnation to determine that they 

 belonged to the species ('iimhdrus i»lliu'i(liis, but rather t(» the \ariety 

 w inch Prof. Cope has d(>scril>ed as the variety iiimtiis than t(> the typi- 

 cal Ibrni. The variation in the length of the rostrum and in the general 

 spininess is very great. A complete series can be formed beginning 

 with individuals ])rovided very liberally with lateral spines and whose 

 rostrum bears two sets of teeth near the arumeu, and then running 

 down to specinu'us which ha\-e tlie rostral teeth rei)re seated by only a 

 salient angle and with very weak lateral spines. All the sjn'cimens, 

 however, had somr spines, on the sides of the carapace, postorbital 

 ridges, or lostrum. It was in onl> oni' spccinnai, a lemale, that the ros- 

 tral spines were missing. 



