COLE : PYCNOGONIDA. 189 



boscis again narrows, but remains considerably thicker than the proximal portion, 

 and at the tip it again expands to a diameter only a little less than that of the 

 middle third. The distal portion has a distinct upward curve. The proboscis as 

 a whole may then be divided into three parts : the proximal third is narrow and 

 cylindrical; the middle third forms an expanded bulb of greater diameter than 

 any part of the trunk ; while the remaining third is narrower again, curves 

 slightly but distinctly upward, and is expanded at the tip, which is composed of 

 three blunt lobes and is terminated by the triangular mouth. The general shape 

 of the proboscis resembles somewhat certain elongated gourds or squashes, and 

 this has suggested the specific name. 



Palps but little longer than the proboscis ; when extended the distal end of the 

 sixth joint comes even with the end of the proboscis. First and second joints 

 short and knob-like ; the first really somewhat triangular as seen from the side, 

 being broader distally ; the second short and disc-like. Third joint slender, very 

 slightly less than one-third the length of the proboscis ; expanded considerably at 

 the distal end. Fourth joint nearly as broad as this expanded end of the third, 

 and only about as long as broad. Fifth joiut somewhat over half again as long as 

 third ; of about the same diameter as that joint proximally, but gradually expand- 

 ing toward the distal end. Joint six about twice as long as four ; joint seven one 

 and one-half times six, or in other words, equal to the lengths of joints four and 

 six combined, but of distinctly smaller diameter ; eighth joint very small ; ninth a 

 little longer ; tenth very slender and equal in length to eight and nine taken to- 

 gether. The proximal parts of the palp are smooth, but the distal part of joint 

 six and joints seven to ten are provided with numerous short, stiff hairs. 



Oviger somewhat longer than the entire body (tip of proboscis to tip of caudal 

 segment). First three joints short, rounded, and arising directly behind the 

 origin of the palps from a process of the trunk which is almost as large as one of 

 the coxal joints of the appendage. The fourth joint is long aud slender, but 

 gradually increases iu diameter toward its distal end. The length of these four 

 joints, together with that of the process from which the appendage arises, is 

 almost exactly equal to the length of the proboscis. The fifth joint is short, its 

 length being equal to that of joints 1 + 2 + 3. The sixth joint resembles the 

 fourth in shape, but is slightly longer, being equal in length to joints 2 + 3 + 4. The 

 remaining joints are short and coil closely around in a little spiral, the terminal 

 joint thus overlapping joint seven on its mesial side, as shown in Fig. 9. Joint 

 seven is about three-fourths the length of joint five ; the succeeding joints decrease 

 gradually in length and diameter to the small terminal claw which constitutes the 

 eleventh joint of the appendage. The oviger is armed only by a series of three or 

 four rows of rather simply " denticulate " spines on the outer curvature of joints 

 seven to ten, and a few minute stiff spines on the outer side of these same joints 

 and extending along the opposite side of joint six. 



Legs about three times the length of the entire body from tip of proboscis to 

 tip of caudal segment ; they vary somewhat, the second pair being the longest, 

 the third pair a little shorter, followed by the fourth pair, the first pair being the 



