BRA CH Y UR A AND MACRURA OF HAWAIIAN ISLANDS. 
919 
Family ATYIDtE. 
Atya bisulcata (Randall). 
Atyoida bisulcata Randall, Jour. Acad. Nat. Sci. Phila., VIII (1839) 1840, 140, pi. v, fig. 5. See 
Bouvier, Comptes Rendus Acad. Sci. Paris, CXXXVlII, 1904, 446, and Ann. Mag. Nat. Hist. 
(7), XIII, 1904, 377. 
Distribution. — Kaiwiki, Hilo, Hawaii, 1,800 feet altitude, 3 miles from sea, H. W. Henshaw. 
Pepeekeo, 10 miles from Hilo, H. W. Henshaw; “fresh-water riyulet directly over the sea but having 
no connection with it.” Lahaina, Maui, U. S. Fish Commission; “fresh -water stream in canyon 
5 miles east of Lahaina, April 12, 1902; inhabits a cool, swift mountain stream and is found back 
under the tdcks, usually where there is a little fall. Species common.” 
Hawaiian Islands (Randall). Fragments of. type in Museum of Philadelphia Academy of Natural 
Sciences. Hawaii (Stimpson). Oahu (Dana, Sharp). Honolulu (Bate). 
Color “mottled grayish olive, tinges of red on lateral lappets of carapace.” 
Ortmannia henshawi Rathbun. 
Atya bisulcata Sharp, Proc. Acad. Nat. Sci. Phila., 1893, 111 (part, Cat. No. 162). 
Atyoida bisulcata Ortmann, Proc. Acad. Nat. Sci. Phila., 1894, 407. 
Ortmannia, henshawi Rathbun, Bull. U. S. Fish Com , XX, 1900, 2, 120, 1901. 
An atavic form of Atya bisulcata. (See Bouvier, loc. cit. ) 
Distribution. — -Kai wiki, Hilo, Hawaii, 1,600 to 1,800 feet altitude, 3 to 5 miles from the sea, H. W. 
Henshaw. Pepeekeo, 10 miles from Hilo (with the preceding). Hilo, R. C. McGregor. Mountains 
of 'West Maui, near Wailuku, Iao Valley, 100 feet altitude, 
R. C. McGregor. Lahaina, Maui (with the preceding 
species). 
Caridina brevirostris Stimpson. 
Caridina brevirostris Stimpson, Proc. Acad. Nat. Sci. 
Phila., XII, 1860, 29 [98], 
A small species, length about 13.4 mm. 
Rostrum short, triangular, sharp-pointed, not reaching 
end of first antennular segment. No antennal spine on 
carapace. Eyes transversely placed, scarcely exceeding 
peduncle of antennulse. Antennular segments very short, 
second shorter than first, third shorter than second; basal 
scale reaching end of first segment. Antennal peduncle ex- 
tending to end of second antennular segment; scale oblong, 
its outer spine more advanced than the antennular peduncle. 
Wrist of first pair of feet shorter than propodus and attached 
near middle of palm. Wrist of second pair as long as propodus and nearly as long as merus and 
ischium together, widening distally, extremity hollowed out similar to that of the first pair. Chelae of 
both pairs very broad and similar; fingers shorter than palm, tips transparent, fringed with stout hair. 
“Color vermilion.” 
Distribution. — Five miles south of Puako Bay, Hawaii, July 13, 1902; “taken in small fresh or 
slightly brackish w T ater pools in lava flow, near sea. The shrimps were found in some numbers on the 
rocks in the bottom of these pools.” Hilo, Hawaii, H. W. Henshaw. 
I have referred these specimens to the species which Stimpson describes very briefly from Loo 
Choo, although I have seen no other specimens. 
In the hollowing of the carpus of the second foot, the species approaches the genus Ortmannia. 
Fig. 67 . — Caridina brevirostris, Puako Bay. a, 
Antennal region, much enlarged. 6, First 
foot, x 16. c, Second foot, x 16. d, Portion 
of one of last three pairs, x 16. 
