THE GEAPSOID CEABS OF AMEEICA. 



165 



Measurements. — Female holot^'pe, length of carapace 3.6, width of 

 same T.7 mm. 

 Range. — Known only from the type-locality. 



PINNIXA TUBICOLA Holmes. 



Plate 36, figs. 5-8. 



Pinnixa tubicola Holmes, Proc. California Acatl. Sci., ser. 2, vol. 4, 1894, 

 p. 569, pi. 20, figs. 17 and 18 (type-localities, Trinidad, Cape Mendocino 

 and Bodega Bay, California ; types not extant) ; Occas. Papers Califor- 

 nia Acad. Sci., vol. 7, 1900, p. 91. — Eathbun, Harriman Alaska Exped., 

 vol. 10, 1904, p. 187. — Weymouth, Leland Stanford Jr. Univ. Publ., 

 Univ. ser. No. 4, 1910, pi. 57, text-fig. 4. 



Pinnixa longipes Weymouth, Leland Stanford Jr. Univ. Publ., Univ. ser. 

 No. 4, 1910, p. 58 (part: two young specimens). 



Diagnosis. — Carapace 2^ times as broad as long in female, twice as 

 broad as long in male. Propodus of third leg wider at distal end 

 than base of dactylus. Chelae smooth, fingers hooked. 



\ ^D 



Fig. 103. — Pinnixa tubicola. a, Outer maxilliped of female (20860), X 22^ ; &, ab- 

 domen OF MALE, Trinidad^ X 15 J ; c, left chela of male, X 6, after Weymouth. 



Description of female. — Carapace very wide, subcylindrical, slop- 

 ing rather steeply on all sides toward the margins. Gastro-cardiac 

 depression shallow. No cardiac ridge, only a smoothly rounded trans- 

 verse elevation. Posterior margin very wide, slightly concave. 

 Front not projecting beyond general contour. Outer portion of 

 antero-lateral margin ridged. 



Chelae smooth, narrowing distally, upper and lower margins of 

 palm convex, a deep sinus below union of palm and immovable 

 finger, fingers meeting or almost meeting, tips strongly hooked and 

 crossing each other, each armed with a small tooth (which may be 

 absent) the propodal tooth distal to the dactylar. 



