L 10 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
off Humayao, 91 fathoms, station 6099; off Culebra, 15 to 151 fathoms, stations 6087, 6093; Ensenada 
Honda, Culebra; off St. Thomas, 20 to 23 fathoms, stations 6079, 6080. 
Beaufort, N. C. ( Kingsley) , to Rio de Janeiro ? (Dana) ; Bermudas ( Kingsley ) : Panama ( Kingsley) . 
In green sponges (Herrick); Maceio, Brazil ( Branner- Agassiz Exped., 1899). 
Synalpheus laevimanus longicarpus (Herrick). 
Alpheus saulcyi var. longicarpus Herrick, Mem. Nat. Acad. Sci., v, 383, 1891. 
Synalpheus Isevimanus var. longtcarpus Coutiere, Bull. Soc. Entom. France, 1898, No. 8, 189, fig. 2. 
Rostral and orbital spines similar to those of S. minus. Antennular scale not reaching quite to 
end of first segment. The antennal scale is variable in length and may reach the middle of second 
antennular segment or to end of third segment. Basal spine of antenna overreaching first antennular 
segment. The dactylus of the larger cheliped is relatively longer than that of S. minus; it is still less 
than half the length of palm; palm narrower than in that species. Carpus of small cheliped elongate, 
of variable length, either cup-shaped or subcylindrieal. 
Length of Bermudan specimen, 15.8 mm. Porto Rican specimens much smaller. 
Porto Rico: Mayaguez Harbor, 22 to 33 fathoms, station 6064; off Vieques, 12J fathoms, station 
6095; off St. Thomas, 20 fathoms, station 6080. 
Florida Keys, Bahamas, and Antilles, in brown sponge, Ilirdnia acuta; Bermudas (G. Brown 
Goode and George Hawes, coll.). 
Synalpheus laevimanus parfaiti Coutiere. 
Synalpheus lievimcinus var. parfaiti Coutiere, Bull. Soc. Entom. France, 1898, No. s, 191, fig. 3. 
Rostral spine. Orbital margins forming blunt lobes almost as far advanced as rostrum. The 
antennular scale does not reach beyond first segment, but is equal or almost equal to it. The spine of 
the scaphocerite may be as long as or fall somewhat short of antennular peduncle; its scale is absent 
in type, but present in specimens before me as a very narrow strip, much shorter than the spine. Basal 
antennal spine as long as or longer than scaphocerite. The large cheliped in shape and proportions 
resembles that of S. minus; the palm has the strongly projecting distal tooth of S. Ixviinanus long! car pus. 
The carpus of small cheliped is somewhat longer than that of typical Ixvimanus figured by Coutiere, 
op. cit., fig. 16. 
Length of Porto Rican specimen, 14 mm. 
Off Vieques, 14 fathoms, station 6085; off St. Thomas, 20 to 23 fathoms, station 6079. Type 
locality, Annobon, West Africa. 
Synalpheus neptunus (Dana). 
Alpheus neptunus Dana, Crust. U. S. Expl. Exped., I, 553, 1852: pi. 35, f. 5, 1855. 
Synalpheus neptunus Coutifere, Ann. Sci. Nat. (8), Zool., ix, 15. 1899. 
In typical specimens, the front is three-spined, spines subequal. The antennular scale overreaches 
first antennular segment and extends from one-third to one-half the length of second segment. The 
antennal scale is longer than antennular peduncle, about as long as antennal peduncle. The basal 
spine is as long or nearly as long as antennular scale. Dactylus of large cheliped longer than in any 
other Porto Rican species; it is one-half or more than one-hall' the length of palm. Carpus of smaller 
cheliped short. 
Specimens from the Bermudas have the rostral spine considerably longer than orbital, reaching 
one-half the length of basal segment. Daetyli of third, fourth, and fifth pairs of feet triunguiculate, 
the third nail being rudimentary. Length, 21.3 mm. 
In the Porto Rican collection there is but one small specimen, dredged off Gallardo Bank, 10 
fathoms, station 6076. This specimen varies considerably from typical ones. The frontal projections 
are dentiform, short, but still, in relation to the antennular peduncles, they are as advanced as in 
typical specimens. Antennular scale of normal length. Antennal scale scarcely attaining end of 
antennular peduncle. Basal spine reduced, not reaching end of first antennular segment. The large 
cheliped resembles closely that of Bermudan specimens. 
Sooloo Sea, 61 and 9 fathoms, and Fiji Islands (Dana); Red Sea (Heller, Paulson); Bermudas 
(G. Brown Goode, coll.). 
