A STUDY IN CAECIKOLOGY. 79 
Plate 7. 
Fig. 42. Right second uiaxilliped of Ranina dentata. The exopodite is deeply grooved on 
its surface and has no flagellum. 
Figs. 44-47. Notosceles chiminonis. Fig. 44. Second maxilliped,the exopodite of which, like 
that oiRanina, is deeply grooved on the ventral surface and bears no flagellum. 
Fig. 45. First maxilliped. Fig. 46. Second maxilla with seaphognathite. 
Fig. 47. First maxilliped. 
Figs. 48-50. Raninoides personatus. Fig. 48. Third maxilliped. Fig. 49. Second maxilliped, 
the expodite of which bears a minute flagellum. Fig. 50. First maxilliped. 
Figs. 51-53. Lyreidus tridentatas. Fig. 51. Third maxilliped. Fig. 52. Second maxilliped, 
the exopodite of which bears a minute flagellum. Fig. 53. First maxilliped, 
the exopodite of which is elongated in correlation to the elongation of the an- 
tennary sternum. 
Fig. 54. Second maxilliped of Fhilyra lavis. The podobranch and mastigobranch are 
wanting : the exopodite is not grooved on the ventral surface and bears a short 
flagellum, 
Fig. 55. First maxilliped of Phihjra lavis. The mastigobranch is of gTeat length and the 
exopodite is of normal shape and bears a flagellum. These appendages of Fhilyra 
should be compared with the corresponding appendages of the several genera of 
RaninidfB. 
Fig. 56. Notopus dorsipes : ventral view of the antennary region to show the relation of the 
respiratory tube to the antennary sternum. The pterygostomial portions of the 
carapace have been cut awa}'. 
Fig. 57. Frontal view oi Notosceles chiminonis to show the antennte in their natural position 
and their relation to the orbits. The right antenna has been pulled slightly 
outwards to expose the antennules. 
Fig. 58. Ventral view of the anterior part of thorax and head of Raninoides personatus. The 
right third maxilliped has been removed and the left displaced from the middle 
line to expose the mouth frame and to show the elongated exopodites and endo- 
podites of the first maxillipeds forming the floor of the spout-shaped antennary 
sternum. The latter extends well forward between the basal joints of the 
antennules. 
