REVISION OF RECENT BAIRDIIDAE 65 



Triebelina schyroconcha, new species 



Figure 33^, h; Plate 2: figures 7, 8 



? Bairdia tuberculata Brady of Brady, 1880, p. 60, pi. 10: fig. 3a-d. — Brady, 



1890, p. 495. 

 Not Bairdia tuberculata Brady, 1880 [= Bairdia rhomboidea Brady (not Kirkby), 



1867, p. 162, pi. 19. figs. 14, 15].— Van den Bold, 1966, pi. 2: fig. 3. 



Etymology. — Greek schyr, hedgehog + konche, shell. 



Type specimens. — Holotype USNM 121331; paratypes USNM 

 121332-121333. 



Type locality. — Nosy Be, Madagascar, sample 504 (carbonate 

 sand among patch reefs at Ambariobe). 



Material. — Three subfossil specimens from Nosy B6. 



Diagnosis. — Carapace small but very robust, extremely broad, 

 ventrally flattened, lateral outline almost perfectly rhomboidal. Ex- 

 terior covered with extremely numerous very tiny spines. No pits or 



Figure lli .— Triebelina bradyi Treibel: A-D, Female USNM 121325. T. reticulopuncta 

 Benson: E,F, Holotype USNM 113123. T. schyroconcha, n. sp.: G, USNM 121331; H, 

 USNM 121332. 



A, Antenna; B, thoracic legs; C,E-H, carapace interiors; D, furca and genital lobe. 

 A,D, X 301; B, X 152; C,E-H, X 61. 



