No. 401.]. MARINE BIOLOGY AT BEAUFORT. 353 
on wharves; an isopod (Gyge sf.), parasitic in branchial cavity 
of Alpheus heterochelis; another parasitic isopod (Livoneca 
ovalis, with embryos in August), common on gills of pinfish ; 
Orchestia sf.; Caprella s., June. Numerous copepods and 
cladocera, many with eggs or embryos, are constantly taken 
in the tow throughout summer. 
Among the cirripeds may be mentioned the common rock 
barnacle and ivory barnacle (Balanus eburneus), Lepas anatifera, 
which frequently appears in the harbor; a small Lepadide 
(Dichelaspis sf.), a common parasitic form on the gills of the 
edible crab, with abundant eggs in July, — this interesting 
form is probably the species mentioned by Fritz Müller (Facts 
Jor Darwin, p. 137) as occurring at Desterro on same crab 
(Lupa diacantha), —it differs in specific points from the sev- 
eral other members of the genus, described by Darwin and 
Hoek (Challenger Report). Limulus is of course abundant, 
young specimens swarming on the sand shoals in early sum- 
mer (June). The eggs of Limulus were, as far as I know, for 
the first time artificially fertilized in 1882 by Professor H. L. 
Osborn at Professor Brooks’s laboratory here. 
Naturally but little attention has been paid to the tracheate 
arthropods — enough though to show that the locality is an 
excellent one for these groups. A few characteristic forms 
are: the slender, long-legged myriapod Cermatia forceps, 
sphinx moth, Phlegethontius carolina (larva, ** tomato-worm,” 
excellent for anatomical work and for metamorphosis), rhinoc- 
eros beetle, Dynastes tityrus. One of the large hunting spiders, 
Lysosa sp. (carrying cocoon in early September), is abundant. 
The cow-killer ant (burrowing mutillid wasp, female wingless), 
Spherophthalma sp., is a common form. 
The polyzoa have not been studied. The common forms 
are species of Vesicularia, Bugula, Membranipora, Escharella, 
Pedicellina (species with spines, probably P. echinata). The 
only brachiopod known here, Lingula pyramidata, and its larva 
have already been spoken of. The particular locality in the 
harbor (first mentioned by Coues, /oc. cit) where Lingula, 
associated with Renilla and Amphioxus, was extremely abun- 
dant some years ago, has been encroached upon by a growing 
