LIST OF ILLUSTRATIONS, XV 



Page. 



Head, part of antenna, and posterior tarsus of Pron us minor i;,S 



Penultimate ventral segment of a male Ancistrogasterfalcifera 459 



Hind leg of Pilex bogotensis 400 



Penultimate ventral segment of Sarcinairix anomalia, male 461 



Profde of forceps of male Skalistes lugubris, var. metrica 402 



Forceps of male Skalistes cacaoensis 462 



Tarsus of ( 'i p< r sell irnrzi 403 



Leidyosuchus sternbcrgil. a, fourth (?) lumbar vertebra, seen from right side; 



b, second sacral vertebra, seen from front 495 



Leidyosuchus sta-nlnn/ii . a, left humerus, ventral view; //, right humerus, dor- 

 sal view; c, right fibula, lateral view; d. second metatarsal of left hind foot; 



e, proximal half of a metatarsal 497 



Dorsal spine of Thalassophryne doiri 511 



Opercular spine of Thalassophryne dowi 511 



Opercular spine of Porichthys grt enei 511 



" Pectoral fin of Porichthys greem i 515 



Tooth of Thalassophryne punctata. X16 diameters. Fish, 15.2 cm. long 518 



Tooth of Thalassophryne maculosa. X16 diameters. Fish, 16 cm. long 520 



Tooth of Thalassophryne reticulata. XI 6 diameters. Fish, 26.7 cm. long 522 



Tooth of Tha/fixsophrync mcgalops. X 16 diameters. Fish, 6.9 cm. long 523 



Panopeus bermudensis, male, X U 542 



Eury panopeus transversus, male, natural size 543 



Synalpheus latastei. After Coutiere. a, frontal and antennal region, male, 

 Australia; a', frontal and antennal region, female, Chile; c, carpocerite; K, 

 large chela; k', small cheliped of first pair; /, foot of second pair; m, foot of 



third pair 56:5 



Stenothoe assim His, male, X 15 622 



Hyalella knickerbockeri, male, X 12. Madison, Wisconsin 624 



Scyracepon hawaiiensis, female, a, dorsal view; b, ventral view; c, lateral 



view of thorax 645 



Scyracepon hawaiiensis. Maxilliped 646 



Scyracepon hawaiiensis. Mandible 646 



Scyracepon hawaiiensis. First lamella of marsupium 646 



Scyracepon hawaiiensis. Second leg of female 647 



Scyracepon hawaiiensis. Male 17 



