268 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 97 
Distribution.—Long Island to Brazil, Tex. Represented in the 
-Woods Hole Oceanographic Institution fouling collections from 
eastern Florida and the Bahamas. 
TANYSTYLUM CALICIROSTRE Schimkewitsch 
FiacurE 49, b-d 
Tanystylum calicirostre ScHIMKEWITSCH, 1889, pp. 331-333, figs. 5-7. 
Record of collection—Bermuda, 1901, A. E. Verrill coll., 1 female (Y. P. M. 
No. 7305). 
This specimen agrees with the original description except that the 
spines on the legs and palpi are smaller and less numerous, and the 
dorsal trunk tubercles are apparently smaller. 
Family COLOSSENDEIDAE Hoek, 1881 
A family of large, deep-water forms with very long legs, 9- or 10- 
jointed palpi, and a large proboscis. Ovigers are 10-joined, with a 
terminal claw and spines on the terminal segments, present in both 
sexes. 
It is represented in western Atlantic waters by five or six species of 
Colossendeis, and the 10-legged Pentacolossendeis, which resembles 
Colossendeis in all other details except its extra pair of legs. Practically 
nothing is known of the habits of these deep-water pycnogonids, and 
their early development is still a mystery. Egg-bearing males have 
never been found, although occasional specimens with adherent bodies 
or capsules attached to the legs, which might be egg capsules, have been 
observed (ef. Hoek, 1881, pp. 65, 143; and Cole, 1909, pp. 190-191, 
pl. 3, figs. 11-12).¥ 
Hoc GUMTREE ICUs occ Se ee A a Colossendeis (p. 268) 
UO GE 1 c\ga) oC | aan eg Pa Pentacolossendeis (p. 275) 
Genus COLOSSENDEIS Jarzynsky, 1870 
Chelifores lacking in adults (but occasionally persistent in nearly 
mature specimens). Palpi 9-jointed. Ovigers 10-jointed, with ter- 
minal claw and spines on terminal segments. Tarsus and propodus 
tapering. Key to western Atlantic species: 
1. Terminal claw very short (shorter than propodus); antepenult joint of palpus 
as long or longer than succeeding joint..__...................--_------ 2 
Terminal claw nearly as long as propodus; antepenult joint of palpus very 
BHGrELS SOLOS Ba ileet PO BepOR Of 20 iS tae aw angusta (p. 269) 
2. Proboscis thick, spindle-shaped or clavate, or curved downward, not twice as 
long 88) fronk! |. 2c wea ttoel Jace selene ern Ja beat sed pee 3 
Proboscis very slender, twice as long as trunk, curved slightly upward at 
So eames tp NRA is AI ONE I ay a NE Id macerrima (p. 273) 
28 Ovigerous males of Decolopoda are also unknown. This cannot be considered a character for uniting the 
Decolopodidae and Colossendeidae, however. No egg-bearing males of Ascorhynchus armatus have been 
found, and it is possible that its life history may be similar to that of Colossendeis, 
