BRACHYURA AND MACRURA OF HAWAIIAN ISLANDS. 
898 
Callianassa, sp. 
One specimen of a Callianassa was taken on Honolulu Reef, 1902. It is too fragmentary for 
determination, as it lacks the last four abdominal somites and the right cheliped of the first pair, 
which was probably the larger. The front has three obtuse teeth and resembles that of C. amboinensis 
de Man (Arch. f. Natur., LIII, pt. 1, 1887, p. 480, pi. xx, fig. 4), but in that species the third joint of 
the antennula is three times as long as the second, while in our specimen it is only twice the second. 
The left cheliped is smooth and unarmed, merus and carpus of 
equal length, carpus a little longer than broad and a little longer than 
the palm; fingers slender and subequal to palm, furnished with tufts 
of hair, tips crossing. 
Family AXIID£. 
Axius pailoloensis, sp. nov. 
Carapace a little longer than first five segments of abdomen; gran- 
ulate and pubescent. Rostrum long-pointed, reaching to end of second 
antennular segment; terminal spine upturned, two pairs of side spines. 
Gastric region with five carinse, more or less serrated; median carina 
two-toothed near its middle; submedian carina not reaching to orbit 
or to cervical suture, irregularly serrate; between its anterior end and the median carina are two 
denticles; outer carina a continuation of rostral borders and extending halfway back on gastric region, 
armed with two spines, the anterior of which, just behind the orbit, is the largest of the dorsal spines. 
Abdomen somewhat pubescent; pleura bluntly angular on the posterior half. Telson a little 
longer than wide, posterior margin convex; in front of this margin on either side are inserted two 
slender spines; two minute spinules on either side of the dorsal surface. 
Eyes reaching to middle of rostrum, cornea terminal, 
almost black in alcohol. 
Second and third antennular segments subequal ; flagella 
equal, longer than carapace. 
Acicular spine of antenna reaching middle of penult 
segment of peduncle; stylocerite not attaining end of that 
segment; peduncle exceeding that of antennula by length 
of last segment; flagellum as long as body. 
Outer maxillipeds extended reach beyond antennal 
peduncle, by length of last segment and half of the penulti- 
mate. Lower margin of ischium and merus armed with 
spinules, with two larger spines on the merus. 
Chelipeds equal, stout, upper margin spinulous; the 
part beyond the body long-hairy ; a few long spines on low r er 
border of ischium and merus; carpus higher than long, an 
infero-distal spinule, a spinule near upper distal angle. Pro- 
podus convex and margined below; two spines at distal end 
of palm, one between bases of fingers, one near upper mar- 
gin. Palm a little longer than high; horizontal length of 
fingers equal to height of palm. Fingers irregularly toothed, 
narrowly gaping at base, tips crossing. 
Merus of second and third pairs of feet spinulous 
below; propodus of second to fifth pairs slender. 
Appendages of sixth segment of abdomen armed with a row of four spines on outer margin ; a row of 
four similar spines on carina of inner appendage. Both branches, as well as telson, fringed with long hair. 
Dimensions. — Female, length of carapace 11.7, of abdomen 17 mm. 
One specimen only was dredged in Pailolo channel, in 138 to 140 fathoms, station 3859 (Cat. No. 
30533). 
The chelipeds of this species strongly resemble those of Calastacus felix Anderson, as does also the 
anterior part of the carapace. 
Fig. 49 . — Axius pailoloensis, type, a, Right cheli- 
ped, x If. b, Anterior portion, x 44. c, Tail- 
fan, x 3J. 
Fig. 48. — Callianassa, sp., Honolulu 
Reef, a, Left cheliped, x 3i. 6, 
Outer maxilliped, x 4. 
