14 E. B. Wilson — Pycnogonida of Neio England. 
slender, basal spines slender and divergent. Auxiliary claws one- 
fourth the length of the dactylus. 
Length, 2T millimeters; extent, 15‘6 millimeters. 
This species is closely similar to P. maxillare , of which it may 
be a dwarf variety. It is, however, less than half as large, as 
shown by the measurements, and in nearly all respects is more 
slender. The antennae differ considerably in shape ; the rostrum is 
shorter and lacks the slight constriction which appears to be char- 
acteristic of the former species ; the auxiliary claws are longer, the 
propodus more slender and the entire surface of the animal smoother, 
though with more numerous hairs. 
It was taken in considerable numbers on a sponge growing in a 
tide-pool on Ram Island Ledge, Casco Bay, by the U. S. Fish 
Commission in 1873. Many of them had large egg-masses, five or 
six in number. 
AnoplodactylllS Wilson. 
Body slender. Rostrum cylindrical, rounded. Antennae three- 
jointed, chelate. Palpi wanting. Accessory legs six-jointed, want- 
ing in the male. Neck elongated, extending forward over the ros- 
trum. Legs slender ; dactylus without auxiliary claws. 
This genus differs from Phoxichilidium , which it otherwise closely 
resembles, in the number of joints composing the accessory legs, 
and in the absence of auxiliary claws upon the dactylus. Phoxi- 
chilidium has been made to include several distinct types, among 
them a form having eleven-jointed accessory legs (P. Jluminense 
Kr.), and “ Phoxichilidium cheliferum' 1 '' Claparede, a very remarka- 
ble form with the accessory legs ten-jointed and distinctly chelate. 
Kroyer’s Phoxichilidium petiolatum (Voy. en Scand., Laponie, 
etc., PI. 38, fig. 3) belongs to Anoplodactylus , and probably also 
Phoxichilidium virescens Hodge. 
Anoplodactylus lentus Wilson. 
Am. Journal of Science and Arts, vol. xv, No. 87, p. 200, 1878. 
Phoxichilidium maxillare Smith, in Rep. on the Invertebrata of Vineyard Sound, p. 
250 (544), PI. VII, fig. 35, 1874 ( non Stimpson). 
Plate IV, figures 3 a to 3 e. 
Body slender, lateral processes widely separated. Oculiferous seg- 
ment broad, as long as the two following segments united, not emar- 
ginate between the bases of the antennoe. Posterior segment some- 
what elongated and very slender, the lateral processes directed 
obliquely backward. Neck swollen. Abdomen rather more than 
