A MONOGRAPH OF THE EXISTING CRIXOIDS 



281 



Figure 14. — Coccomelra hageni (Pourtales), B.M., 1907.3.26.1-3, Sombrero Key: a. Pi; b, 

 nongenital Pj; c, genital Pj of a second specimen; d, cirrus. 



the apex outward, and the inner edge about half as long as the width. The fourth 

 brachial (forming the epizygal of the fu-st syzygial pair) is oblong, twice or three times 

 as broad as long. The following brachials as far as the second syzygial pair are slightly 

 wedge-shaped with somewhat concave ends, and about half again as broad as long; the 

 central portion of their distal ends is finely spinous. The brachials following the second 

 syzygial pair are very obliquely wedge-shaped and about as long as broad, distally be- 

 coming less and less obliquely wedge-shaped and at the arm tip elongated. Two or 

 tlu-ee of the brachials following the second syzygial pair have a group of small spines in 

 the central portion of the distal end, but the following brachials have the ends smooth 

 and not produced. 



Syzygies occur between brachials 3 4-4, 9 + 10 and 14 + 15 (the last 2 occasionally 

 irregiilar) and distally at intervals of 2 or 3 muscular articulations. 



Pi is about 10 mm. long, slender and very flexible, composed of 40 segments of 

 which the basal 5 or 6 are broader than long, the twelfth and following are about as 

 broad as long, and the terminal are rather longer than broad. The short proximal seg- 

 ments have their corners rounded off, and the middle and distal are centrally constricted 

 with prominent articulations. 



Pj is of about the same length as Pi or slightly shorter; it is stiflfer than P, and is 

 composed of 20 segments of which the fust 3 are about as long as broad and the remain- 

 der become progi'essively elongated; a large gonad occurs on the eighth to thirteenth 

 segments. The following pinnules are similar, but gradually decrease in length to about 

 the eighth after which they do not bear gonads, becoming rather more slender and in- 

 creasing in length. The dist.il pinnules are 7 nun. long, with the first 2 segments ex- 

 panded and trapezoidal and the remainder elongate, though not markedly so. 



Color in life. — Pourtales says that this species is pale greenish, and that the 

 yoimg are marked with dark brown spots arranged in pairs on the beginnings of the 



