NO. 1050. AMERICAN mi'ECIES OF tiV S ALl'IllWi^^COVTlEltH. 61 



Localities : 



S. goodei — 



Gulf of Mexico, 84 fathoms, (innupun Station No. 5088, 1 

 specimen. 



Tampa Bay, 6^ fathoms, Fhh Hawk Station No. 7109, 1 

 specimen. 



Near Colon, 34 fathoms, Albatross Station No. i2147, 1 

 sj^ecimen. 



Bermudas, George Hawes, 2 specimens. 



Bermudas, Harrington Sound, in sponges, George Hawes, 7 

 or 8 specimens. 



Bermudas, G. Brown Goode, 20-30 specimens, type. 

 S. goodei occ id en talis — 



Lower California, Gulf of San Jose, M. Diguet, 7 speci- 

 mens (Paris Museum). 



Type of S. goodei.— Cat. No. 24821, U.S.N.M. 



SYNALPHEUS SANCTITHOM.ffi, new species. 



Although very like S. goodei, this sj^ecies ought certainly to be 

 separated from it. 



The basicerite has an obtuse superior angle; its lateral spine does 

 not reach the extremity of the median article of the antennule; the 

 antennal scale is 1^ times as wide as in S. goodei, and does not ex- 

 ceed the extremity of the median article of the antennule ; its lateral 

 spine is very slender, and shorter than the antennule. 



The very thick carpocerite, which is 4 times as long as wide in the 

 female, only 3.5 times in the male, is the principal distinctive char- 

 acter of this species. 



The large chela is more slender and elongated than in S. goodei, 

 especially in the female; its relative dimensions are: Fingers 1; total 

 length 3.C6; height 1.28, in the male; and respectively 1; 4; and 1.1, 

 in the female ; the upper margin of the meropodite is strongly convex 

 and presents no prominent anterior angle. 



The small chela in the male has the following proportions : Fingers 

 1 ; total length 3 ; height 1 ; the carpus measures 0.42 of the length of 

 the chela, and the meropodite is 4 times as long as wide; in the fe- 

 male the proportions of the chela become 1 ; 2.50 ; 0.8. 



The two chelse are notably smaller in the female (proportions 1.15 

 for the large; 1.1 for the small chela). 



In the second pair the first segment of the carpus is smaller than 

 the sum of the four others, and is also smaller than the terminal chela. 



The proportions of the third pair are : Meropodite 2.43 ; carpus 1 ; 

 propodite 2; the meropodite is 4.4 times longer than wide; in the 

 female the proportions become 3 ; 1 ; 2.15 ; and the meropodite is more 

 than 5 times as long as wide. 



