CUVIER’S FAMILY OF BRACHIOPODA. 143 
length being taken from the extreme edge of the border above the perforation to the 
opposite rim; and the breadth following an imaginary line, bisecting the former at 
right angles. 
2. OrsicuLta Cuminaii. 
Tab. XXIII. Fig. 1. 
Orb. testd subconicd, suborbiculari, crassiusculd, striis ab apice radiantibus numerosis ; 
epidermide fuscd. 
Long. +2, poll., lat. 32,. 
Hab. ad Paytam Peruvie, ad Sanctam Elenam, et ad Panamam. 
Mus. Cuming. 
The concentric lines of growth in this species are crossed by the numerous stri¢ which 
radiate from the apex of the upper valve. The under valve, which varies from con- 
vexity to flatness, is much the thinnest, and is only marked by the concentric lines. 
Found by Mr. Cuming at the localities above given, attached to the lower sides of 
stones in sandy mud at low water, and in some instances at a depth of six fathoms. 
The remains of the cilia give a bearded appearance to the border of the shell in many 
of the dried specimens, as in Orb. lamellosa. 
Orb. Cumingii approaches nearest to Orb. striata, described by Mr. G. B. Sowerby in 
the ‘ Transactions of the Linnean Society’. 
3. OrBICULA STRIGATA. 
Tab. XXIII. Fig. 1*. 
Orb. testd crassiusculd, subrotundd, substriatd, radiatim castaneo strigatd ; epidermide 
tenui, fused. 
Long. +7,, lat. vix +2,, crass. -2; poll. 
Hab. ad Guatemale oras. (Isle of Cafia.) 
Mr. Cuming dredged two individuals of this species at the depth of eighteen fathoms. 
They were attached to rocks. The dimensions are taken from the largest specimen ; 
but the smallest is figured on account of the superior brilliancy of the stripes. 
Genus. Lineuta, Brug. 
1. Lincuta AupEBARDU. 
Tab. XXIII. Fig. 14. 
Ling. testd oblonga, glabra, corned, pallidé flava, viridi transversim pictd, limbo anteriore 
rotundato, viridi. 
Long. 12 poll., lat. +5. 
Hab. ad Insulam Punam. (Bay of Guayaquil.) 
Mus. Cuming. 
