3G HULLKTIN l«, LNITKU 8TATKH NATIONAL MUSEUM. 



piitcli, L'U-4 to 23-r». Dor.Hiil pliitrs liiM'ly reticiilutiMl. Aiittiiiuiu aud 

 Iv^H lon^. 



Male: il, 1, 5, 0, 7 pairHot" Iv^^ vinsnnte, rest sleii«l«'r; uljout the Jlrst 

 iil'leiMi pans, t-ixeeptiii^ the tiiHt two, witli th«^ tarsal joint uiiiied on thi^ 

 iindrr side with an elon;;ate pati-h of short tuber<'h>s cxti'iidinK from 

 the middle to claw, coxa not tubcnnlate; femur of fourth pair of Ic^s 

 prodiu-cd into a knoh like apptMida;;:*' on the under side near tlir middle 

 an<l armed with three or four moderately lar^;*' sliarp tub(irh>s; femur 

 of ninth pair with an inwanl projet'tin^', cylindrical, tapering, basal 

 lobe, which is indistiiutly tubcrculate on the upper side. 



licnjjth of body: S 1<> to 1H..V""', width 1.2 to l.o"""; 9 lcu<;th 13 to 

 10""", width .9 to l.li""", antenna' 2 



This n»nv spe<ue8 is more related to the cave form ('raxpetloxomn 

 bolhnani, the male of which has the same peculiar knobs, but the 

 tuberculation isdittcrent. From llar«:er's description of (J. filomrtutinu 

 this species seems to ditt'er in havinj; a dark median dorsal line, besides 

 bein^ of a h.rj^er size. 



1 have examined over a dozen specimens collected by Mr. Carl II. 

 Eigenmann. 



4. Paradesmus dasys, sp. uov. 



Diatfnosix. — V<'ry similar to Pnratlef<mi(H flt'deilix (Ko«'h|, but the tibia 

 and tarsi of male tuberculate beneath; vertex pilose on each side of 

 sulcus, first and p«Miultimate sejjments with two rows of seta-, rest with 

 one; copulation foot resembling that of ururilitt. 



Type. — U. 8. Nat. Museum. 



Habitat. — Baltimore, M<1. 



This species is very closely related to I'ttvadrsmm (jravUis, as shown 

 by the character of male genitalia, but is at on(!e recoguizid by the 

 characters given in the diagnosis. The following ditlerencjs were also 

 observed, which, except the characters of male genitalia, are not <»f 

 much importance: 



Dorsal plates somewhat wrinkled; repugnatorial pore (as compared 

 with Saussure's tigure of P. voarctatnx= J*, f/racilifi) not i)laced so far 

 back nor the lateral carina* so swollen; the end of the sheath inclosing 

 the tlagellum finely serrate as well as its branch ; the other U)be widely 

 three or four toothed; length of body, S lo.o to 20""", 9 17 to 22.5""". 



I have examined three males and a number of females collected by 

 Mr. Charles L. Edwards, of Johns Hopkins University. 



5. Polydesmus testi, sp. nov. 



J)ia(/no8is. — Tuberculation as in P. fmniiliaris Koch,* but the lateral 

 carinse not finely serrated; tubercles setse-tipped; male genitalia very 

 similar to Polydesmus iticonsfans Latzel.t 



*PoIijdesmHs vtoiiiliatis Kocli, Syst. Myr., 135, 1847 (Pennsylvania) = I'ofydesmus 

 serratus Wood, Trans. Ainer. Philos. Sop., 215.. 1865 (Pennsylvania). 

 ] PolydeHinus hn'onxtans Latzel, Les Myr. Nonuandie, 21, 1883. 



