516 



PEOCEEDimiS OF THE NATIONAL MUSEUM. 



%^^'%^ 



Fio. 3.— PsEUDoriiEU'HUSA 



IlKLMANA, MALE, NAT- 

 UKAI. K1/-K. a. Feont. 

 h. Lahuer chela, c. Ab- 



DOMKN. 



l''l((. 4.— PkEUDOTMBI.I'HUSA 

 11 li I, L I A N A , MALE. 



a. Max im.ipek, x IJ. 



b. Lkkt aiidominal ai- 

 i'endagk, inner view, X 

 ;t^ c. Same, loweu view, 



X IJJ. 



Ohelipeds very unequal in both sexes, but iiiiieli more so in tlie male. 



Lower margin of palm of larger cheliped veryeoiivex; ])ollex stout; 



boMi lingers granulate and armed witli broad, low teeth. And)ulatory 



legs slender; meri not imwAi eoinpresscMl, slightly 



dilated ut the middle; propodi narrow and much 



shorter than the slender daetyli. 



c' — 'C^x t — \ DimenNions. — Male: Length,ir)..Smm.: vvidth,li5.3 



I /"""^ trd mm. ; 8Ui)erior width of front, 



7.5 mm.; inferior width of 

 front, 0.0 mm. ; depth of front, 

 0.8 m. Female: Length, 19 

 mm.; width, 33.5 mm.; supe- 

 rior width of front, mm.; 

 inferior width of front, 8 mm.; depth of front, 1 

 m. Female: Length, 17.8 mm.; width, .'iO mm. 

 r?/yw;.s.— No 771, Brit. Mus. ; No. 200;38,U.IS.N.M., 

 one male and one female. Xantipa, State of Guer- 

 rero, Mexico, not far from (Jhilpancingo; H. JI. 

 Smith, collector. 



Named for Prof. F. .Teffrey lioll, of the British Museum, through 

 whose courtesy the writer has des<;ribed the spc^cies. 



PSEUDOTHELPHUSA MONTANA, new species. 



Allied to W belliana, hut front hujher and less advanced, orhitH more 

 oval, cervical suture more transverse, merus of maxillipeds longer (lig. 

 abdominal appendages of the tristani group ((ig. (5, h, c). 



Puncta^ numerous and visible to the naked 

 eye. Cervical suture arching backward and 

 very deep. Median suture also deep; ejngas- 

 tric lobes well nuirked. Antero Integral <lenti- 

 cles small ami blunt; a hepatic tooth is present, 

 about one-third the dis- 

 tance from the orbit to the 

 cervical suture. Front( (ig. 

 5, a) vertical; upper mar- 

 gin smooth ami blunt, divided into two slightly 

 convex lobt^s in a dorsal view, and strongly arched 

 downward in a front view, terminating above the 

 base of the eye-stalks; lower margin sinuous, 

 slightly projecting; front dee[)est at the outer 

 extremities. Orbits oblong in a front view, upper 

 and lower margins sub])arallel. 



Chelipeds unequal in both sexes; palms with 

 convex margins, scaly granulate, as are also the fingers. Fingers 

 reddish-brown, with teeth alternately large and snnill (fig. 5, />), fitting 

 closely together. Meri of ambulatory legs narrow, but slightly dilated 

 in the middle. 



C, a 



Fio. 5.— P8KUDOTIIEL1MIU8A 



MONTANA, MAI-IS, NATIIUAL 

 SIZE. a. FllONT. h. JjAUOER 



CHELA, c. Abdomen. 



Fio. 0.— PsEUDOTIIELPHUSA 

 MONTANA, MALE. rt. MAX- 



iLi.ii'Ei), X Jij. h. Ia:vt 



AllDOMINAL AI'I'UNDAOE, 

 INNER VIEW, X;)!j. C. SAME, 

 LOWER VIEW, X ;i)j. 



