2 PROCEEDINGS OF THE JSTATIOlSrAL. MUSEUM. vol. G3. 



Lower Miocene series: High bluff on left bank of River I'Ayaye 

 about 1 km above trail crossing ; Thomonde formation ; 9907 : 



PANOPEUS, species indeterminable. 

 ? PANOPEUS, species. 

 ? PARTHENOPE, species. 



Middle Eocene series: Road from St.-Michel to Ennery, TV. slope 

 about 1 km from divide; Plaisance limestone; 9792: 



? ZANTHOPSIS, species. 



DESCRIPTIONS OF SPECIES. 

 PORTUNUS (PORTUNUS) HAITENSIS, new species. 



Plate 1, figs. 1-3; plate 2, figs. 1-3. 



Type-locality. — Republic of Haiti: Long bluff on right bank of 

 River Blanche below gorge; bed 47 of section (highest bed) ; 

 Maissade tongue of the Thomonde formation ; lower Miocene series ; 

 February 5, 1921; W. P. Woodring (9722) ; 5 carapaces, incomplete, 

 and palm of a right cheliped ; Cat. No. 333430, U.S.N.M. 



Measurements (approximate). — Largest carapace (pi. 1, fig. 2), 

 length 26.2, width to base of lateral spine 36.4 mm. 



Diagnosis. — A large lateral spine. Orbit very large and oblique. 

 Front well advanced. Carapace verj'^ uneven especially in small 

 specimens. Hand short and high. 



Description. — Carapace very uneven. Deep grooves separate the 

 branchial from the gastric and cardiac regions. A linear, median, 

 gastric ridge, diminishing toward the front; a high, longitudinal, 

 protogastric tubercle, distant from the median line; a deep, suboval 

 depression on anterior half of cardiac region. A well-marked oval 

 lobule is situated at the inner angle of the branchial region. Sur- 

 face of posterolateral region extensively hollowed out. 



Front well advanced, medially furrowed, interantennal margin 

 four-lobed, lobes of median pair narrower and more advanced than 

 those of the outer pair; median sinus V-shaped, lateral sinuses wider 

 than any lobe, U-shaped. The tooth between the antenna and the 

 orbit is visible in one specimen only ; it appears much less advanced 

 than the interantennal teeth, is broad, anteriorly rounded and some- 

 what falcate, concave on the orbital side. 



The anterolateral margin is short, the orbit correspondingly wider 

 than commonly, the number of anterolateral teeth is apparently eight 

 in addition to the strong lateral spine. 



The palm (pi. 2, fig. 1), which is sujjposed to belong to the same 

 species, is short and high for a Portunus^ being 13 mm. long through 

 its middle and 10.5 mm. high at its highest point, a little behind 

 the fingers. There is a wide, shallow, longitudinal furrow below 

 the middle; upper margin convex; lower margin straight to near 

 the finger, where it gradually ascends. The two fingers are of 

 subequal width at their base; the dactylus has a large, purplish- 



