78 PROCEEDINGS OF THE CALIFORNIA 



the under side. Localities — Port Escondido, San Jose Island, both in the 

 Gulf of California. Found at low tide under stones and in coral. 



& 9 



M. M. M. M. 



Length of carapax 14 14 



Width of ditto 11 12 



Length of first pair . 18 



The carapax of the largest female is stouter and broader than that of the 

 largest male, but the latter more than makes up for this deficiency by the ex- 

 tra length of his chelipeds. In some of the females the manus is tubercu- 

 lated, but is smooth in the males and in other females. 



No. 17. Male and female, in spirits. Fisher and Lockington. 



PARTHENOPID.E. 



37. Parthenope (Lambrus) punctatissima. Owen. Zool. Beechey's Voyage, 



81, pi XXIV, f. 4. Stimpson. Crust, and Echi. Pac. S. N. A., 18. 



38. Lambrus frons-acutis. Lockington. Proc. Cal. Acad. Sci., Feb. 7th, 



1876. 



From Boca de Los Piedras, Sinaloa, Mr. W. J. Fisher brought two small 

 specimens. 

 No. 8. Santa Catalina Island. Hy. Hemphill (dried). 



39. Cryptopodia occidental) s-. Dana. Am. Jour. Sci., 2d ser., XVIII, 430. 



Gibbes. Proc. Elliott Soc. Nat. Hist., Charleston, S. C. Stimpson. 

 Crust, and Echi. Pac. S. N. A., 18. 



Dr. Kellogg read the following paper: 



Ludwigia Scabriuscula. 



BY DK. A. KELLOGG. 



Stem annual, erect, branching from the base, somewhat scabrous through- 

 out, slightly decurrent-angled; leaves opposite — upper small (i-inch long; 

 one or more lines wide), sessile, oblong-linear acute; base subclasping 

 margin entire, or obsolttely toothed and scabrulose; flowers axillary, sessile 

 or subsessile, solitary or clustered — six to nine or more in a whorl involving 

 the stem; petals whitish, obovate-cuneate; claw short, nearly as long as the 

 capsule— two to three times the calyx; stigma, four-lobed and capitate, style 

 twice longer than calyx; capsules, ovoid, subquadrangular, angles slightly 

 marked (eight-angled chiefly near the truncate apex; the four intermediate 

 angles often processed into obsolete secondary teeth). Seeds obovate, mi- 

 nutely roughened and very obtusely striate; reddish brown. Muddy margins 

 of streams and lakes ; spicate fruited throughout main stem and branches. The 

 lower leaves are wanting in several collections; intramarginal veins exceed- 

 ingly obscure in the upper lesser leaves. 



