Idem. End of tarsus with claws. 
Phrurolithus Britcheri sp. nov. Epigynum. 
Ctenus malvernensis sp. nov. Epigynum. 
Idem. Male palpus. 
Moenkhausiana brasiliensis sp. nov. Side view of spinnerets in state 
of contraction. 
Idem. Side view of spinnerets in state of expansion. 
Idem. Epigynum. 
Idem. Male palpus. 
Theridionexue, cavernicolus sp. nov. Adult female. 
Idem. Cephalothorax from above. 
Idem. Face and mandibles. 
Idem. Fourth tarsus with comb. 
Idem. Claws and serrate bristles. 
Ancylometes vulpes Bertkau. Epigynum. 
Lycosa nychthemera Bertkau. Male palpus. 
Theridionexus cavsrnivolus. One of the combhairs magnified. 
XXIIF— Geological Map of Southern Manhattan Island. 
XXIV.— Geologic Section from Hoboken, N. J., across Manhattan Island to the 
Navy Yard. Brooklyn, N. Y. 
Text Figures. 
Page 
Streptelasma profundum .55 
Streptelasma corniculum .57 
Enterolasma caliculum .60 
Enterolasma caliculuvi .• 61 
Enterolasma caliculum .62 
Enterolasma caliculum .63 
Enterolasma strictum .66 
Stereolasma rectum .68 
Stereolasma rectum .69 
Stereolasma rectum . 70 
Stereolasma rectum .71 
Stereolasma rectum .72 
Heterophrentis prolifica . 74 
Heliophyllum halli .77 
Hadrophyllum orbignyi . ... 79 
Lophophyllum proliferum .81 
Lophophyllum proliferum .83 
Hapsiphyllum calcareforme . 84 
Hapsiphyllum spinulosum .86 
Hapsiphyllum varsoviense .86 
The Coal Basin of Commentry.164 
The Grand Couche in Tranchee de Longeroux.177 
The Drainage Area of Lake Commentry.1S6 
ERRATUM. 
Caption of Plate XXIV, instead of “Hoboken, N. Y.,” read “Hoboken, N. J.” 
