ILLUSTRATIONS 



PLATES 



A New Species of Trematode Worm of the Genus Ornitho- 



BILHARZIA FROM A CANADIAN GoOSE 



By Rudolf Wetzel 



Facing page 



I. Ornithobilharzia pricei, newspecies 4 



Cambrian Bivalved Crustacea of the Order Conchostraca 



By E. 0. Ulrich and R. S. Bassler 



1-10. Cambrian Conchostraca 108-124 



New and Old Land Shells from the Island of Luzon, Philip- 

 pines 



By Paul Bartsch 



1-9. Land shells from the island of Luzon 20 



A Revision of the Species of Coccophagus, a Genus of Hymen- 

 OPTEROus, Coccid-inhabiting Parasites 



By Harold Compere 



1-2. Coccophagtis malthusi Girault; female with parts named 116-117 



3-4. Species of Coccophagus 118-119 



5-6. Details of the thorax and abdomen of species of Coccophagus 120-121 



7-9. Antennae of Coccophagus 122-124 



10. Wings of Coccophagus 125 



II. Stigmal veins of Coccophagus 126 



12-13. Anatomical details of Coccophagus 127-128 



14. Mandibles of Coccophagus 129 



Fossil Decapod Crustaceans from Mexico 

 By Mary J, Rathbun 



1 . Lobonotus mexicanus 10 



2. Montezumella tubulata 10 



3. Scylla costata 10 



4. 1, Raninoides mexicanus; 2, Podophthalmus (?); 3, Calappa zurcheri 10 



5. 1, 2, Calappilia hondoensis; 3, Calappa zurcheri 10 



6. 1, Xanthosia americana, 2, Ranina (?); 3, 4, Calianassa tepetatensis 10 



IX 



