. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. DECAPODS 109 the second joint; second joint about one and a half times as long as the third; inner flagellum about one fourth longer than the carapace; outer flagellum about two thirds the length of the inner ;. and becoming much smaller at the middle, the distal half very slender. Antennse with a strong spine below the base of the acicle; peduncle slightly exceeding that of the antenna; scale with a broad terminal spine, which reaches the end of the antennular peduncle, and ex- ceeds the blade, from which it is separated by
. Alaska. Natural history -- Alaska; Scientific expeditions; Alaska. DECAPODS 109 the second joint; second joint about one and a half times as long as the third; inner flagellum about one fourth longer than the carapace; outer flagellum about two thirds the length of the inner ;. and becoming much smaller at the middle, the distal half very slender. Antennse with a strong spine below the base of the acicle; peduncle slightly exceeding that of the antenna; scale with a broad terminal spine, which reaches the end of the antennular peduncle, and ex- ceeds the blade, from which it is separated by a short narrow slit; flagellum nearly twice the length of the ,,.„., , . ... , . , Fig. 49. Beiceus har- carapace. Maxulipeds reachmg a little past the mid- rimam. a. Dorsal view . 1 I 1 °^ anterior portion (x 4)- die of the terminal segment of the antennal peduncle, t. Carpus and chela of sec- „,,.,, .... r 1 • °^^ P^'"" <X si)- c- Left Chelipeds subequal, similar, of very moderate size; chela of first pair(x zi). merus with rounded angles, the distal end widened, length about two and a half times breadth, outer surface with a broad oblique sulcus, a trans- verse groove at the supero-distal angle, behind which the upper margin ends abruptly, but does not terminate in a spine; surface granulate, lower surface granulo-spinulous. Carpus small, rounded. Hand narrow- oblong, somewhat compressed, finely scabrous, margins rounded, the length not more than one half greater than that of the preceding joints combined. Fingers fitting close together, the poUex narrowly conical and twice as wide at base as the dactylus, which is subcylindrical; the tips are sharp and cross each other; the prehensile edges are subentire, very finely denticulate, that of the poUex convex except at the tip. The first joint of the carpus of the second pair of feet is about as long as the three following combined; the third and fourth are equal, the second a litde longer than either; the f
Size: 1428px × 1750px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyo, bookyear1901
