002 riiOCKKDINdS OF Tin: NATION. H. MUSiaiM. VOL. XXI. 



mar^iiictl above and below; the iin^ers are broad and Hat, not jiapinjjf, 

 with a narrow granulate border on the outer ed{?e.s; prehensile niarjiins 

 eremite, witli it sll<;liMy lar}»er lobe near the base of the daetylus, and 

 a three-lobcd i)roininence at (he base of the poUex. Lower margin of 

 thepropodus slightly sinnous. 



(^olor. — In iileohol, the earapace i.s nnirked with patches of dark blue. 



nii)nnsit>m. — Male: L(^ngth, ;? nun.; wi<lth, 5. 1 mm. 



VV/yn-.—No. 21501, U.S.N.M. ()n«^ female, from Panama I'.ay, 51.^ 

 fathoms, station ^cSOf). 



This species is placed provisionally in Nueratopsis. It may represent 

 a distinct genus, which it is i)erhaps not advisable to deiine until the 

 uuile is known. 



io8. SPEOCARCINUS GRANULIMANUS Rathbun. 



Sjwocarcinm tiraniillmainis Uatiihun, I'loc. H. S. Nat. Muh,, 18!);{, XVI, ]). 212. 

 OH" Cerroa Island, Lower California, 2.'{ fathoms, station 2837. One 

 young niah\ 



109. GERYON QUINQUEDENS Smith. 



(lerjioii (iiiitKiiicdciiK .Smihi, Trims. Conn. Acad. Sci., 187!l, V, j). :{">, ])1. ix, \\<is. 1, 

 la, \b, 2. 



OH' Cape Frio, l>ra/,il, ()71 iathoms, station 27();}. One snudl male, 

 which dilVers from Noith Atlantic specimens only in the larger nuMlian 

 teeth of the front. 



no. CHASMOCARCINUS TYPICUS Rathbun. 



ChanmociirriiiuK tiijiiciin K'atuiuin, Kiill. Liilxir. Niii. liiHt. Stato Uuiv. Iowa, 

 181IS, IV, p. 2sr), pi. VII, lif-H. :$-5. 



Off Cape l''rio, 15ra/il, 51) fathoms, station 2702. 



III. CHASMOCARCINUS LATIPES, new species. 

 (Plato XLIII, lig. 5.) 



Orbits (llverivtl ohliquehi forward; atcrnum and abdomen of female 

 smooth and pnnvtate; amlniltttorij bys ivide. 



Length of carapace about two thiids its posterior width. Front and 

 orbits less than one-half the width of the carapace. Surface covered 

 with large imiu'ta' which tend to coalesce; granuhito on the posterior 

 half and toward the margins. The branchial region is separatcul by 

 very deep longitudinal impressed lines from the cardiac and mesogas- 

 tric regions, by shallow depressions irom the intestinal region, and by 

 two pits from the hepatic region. The antero lateral nnirgin is distinct, 

 though blunt. Front very narrow and faintly bilobed; side margins 

 oblicjue. Orbit nearly as wide as the front; the superior nuirgin is 

 slightly coiu;ave ami directed oblicpuily forward and outward. The 

 eye-stalk is stout and curved as seen from in front and tapers grad- 

 ually to the cornea. The groove below the hepatite region is similar to 

 that in ('. ii/2>ici(s. The sternum and abdomen of the feuuxle are smooth 

 and punctate. 



