. Bulletin. Science; Natural history; Natural history. A NEW SPECIES OF HEPTACARPUS FROM CALIFORNIA 53. 5mm Fig. 5. Heptacarpus brevirostris (Dana). Male, total length in millimeters North of Salmon Creek, Sonoma County, California; AHF sta. 1627-48. Left, dorsal view of front; right, lateral view of front. propodus at articulation. Merus about equal to propodus, with usually 2 (rarely 1) sharp ventrolateral spines. Ischium about x length of merus. Fourth and fifth pereopods similar to third, but more slender. One or two spines on merus of each. No epipods present. Second pleopod wit
. Bulletin. Science; Natural history; Natural history. A NEW SPECIES OF HEPTACARPUS FROM CALIFORNIA 53. 5mm Fig. 5. Heptacarpus brevirostris (Dana). Male, total length in millimeters North of Salmon Creek, Sonoma County, California; AHF sta. 1627-48. Left, dorsal view of front; right, lateral view of front. propodus at articulation. Merus about equal to propodus, with usually 2 (rarely 1) sharp ventrolateral spines. Ischium about x length of merus. Fourth and fifth pereopods similar to third, but more slender. One or two spines on merus of each. No epipods present. Second pleopod with appendix interna; in male, also appendix masculina. Uropods fringed with fine setae. Outer branch with 2 sharp lateral spines. NEOTYPE: The original type specimen of H. palpator came from Monterey, California. Dr. A. A. Fincham, British Museum (Natural History) informed me that the type cannot be found. The following specimen therefore is designated as a neotype: female, total length in millimeters Municipal Wharf, Monterey, Monterey Bay, California (36°37'N, 121°50'W), 8 m, hand net, 2 Feb. 1963, David Powell, CAS number 035671. Remarks. —Heptacarpus palpator often has been confused by biologists with H. brevirostris, a very similar species (Fig. 5). Both are found in intertidal and shallow subtidal areas on hard bottoms, have rostra that do not reach the end of the second segment of the antennular penduncle, have stout dactyls on the walking legs with bifid tips, have similar patterns of spines on the carapace and antennae, and have epipods on the first three pereopods. To distinguish between the two species, a combination of features is useful. In H. palpator, the scaphocerite is slightly longer than the telson; in H. brevirostris, it is equal to or shorter than the telson. In H. palpator, the spines on the carapace behind the rostrum are not large relative to those on the rostrum proper; in H. brevirostris, the spines on the carapace form a descending series tow
Size: 2575px × 971px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectnaturalhistory, booksubjectscience
